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CHAPTER
7
The
Muscular
System
© 2013 Pearson Education, Inc.
Identify this part 2
a)
b)
c)
d)
e)
f)
g)
h)
i)
j)
k)
l)
m)
n)
o)
p)
q)
r)
s)
t)
u)
Orbicularis oris
Pectolaris major
External oblique
Sternocleidomsatoid
Biceps brachii
Deltoid
Vastus lateralis
Frontalis
Rectus femoris
Sartorius
Gracilis
Adductor group
Fibularis longus
Temporalis
Orbicularis oculi
Zygomaticus
Masseter
Vastus medialis
Tibialis anterior
Transversus abdominis
Rectus abdominis
10
The plasma membrane of the muscle cell is
called the
a)
b)
c)
d)
e)
sarcolemma.
sarcomere.
sarcosome.
sarcoplasmic reticulum.
sarcoplasm.
10
Identify this part 3
a)
b)
c)
d)
e)
f)
g)
h)
i)
j)
k)
l)
m)
n)
o)
p)
q)
r)
s)
t)
u)
Orbicularis oris
Pectolaris major
External oblique
Sternocleidomsatoid
Biceps brachii
Deltoid
Vastus lateralis
Frontalis
Rectus femoris
Sartorius
Gracilis
Adductor group
Fibularis longus
Temporalis
Orbicularis oculi
Zygomaticus
Masseter
Vastus medialis
Tibialis anterior
Transversus abdominis
Rectus abdominis
10
Identify this part 9
a)
b)
c)
d)
e)
f)
g)
h)
i)
j)
k)
l)
m)
n)
o)
p)
q)
r)
s)
t)
u)
Orbicularis oris
Pectolaris major
External oblique
Sternocleidomsatoid
Biceps brachii
Deltoid
Vastus lateralis
Frontalis
Rectus femoris
Sartorius
Gracilis
Adductor group
Fibularis longus
Temporalis
Orbicularis oculi
Zygomaticus
Masseter
Vastus medialis
Tibialis anterior
Transversus abdominis
Rectus abdominis
10
A person whose genetic makeup makes him or
her a better marathon runner than a sprinter
probably has more ________ in his or her leg
muscles.
a)
b)
c)
d)
e)
fast fibers
intermediate fibers
slow fibers
Purple fibers
Pink fibers
10
Identify this part 6
a)
b)
c)
d)
e)
f)
g)
h)
i)
j)
k)
l)
m)
n)
o)
p)
q)
r)
s)
t)
u)
Orbicularis oris
Pectolaris major
External oblique
Sternocleidomsatoid
Biceps brachii
Deltoid
Vastus lateralis
Frontalis
Rectus femoris
Sartorius
Gracilis
Adductor group
Fibularis longus
Temporalis
Orbicularis oculi
Zygomaticus
Masseter
Vastus medialis
Tibialis anterior
Transversus abdominis
Rectus abdominis
10
Identify this part 8
a)
b)
c)
d)
e)
f)
g)
h)
i)
j)
k)
l)
m)
n)
o)
p)
q)
r)
s)
t)
u)
Orbicularis oris
Pectolaris major
External oblique
Sternocleidomsatoid
Biceps brachii
Deltoid
Vastus lateralis
Frontalis
Rectus femoris
Sartorius
Gracilis
Adductor group
Fibularis longus
Temporalis
Orbicularis oculi
Zygomaticus
Masseter
Vastus medialis
Tibialis anterior
Transversus abdominis
Rectus abdominis
10
Identify this part 10
a)
b)
c)
d)
e)
f)
g)
h)
i)
j)
k)
l)
m)
n)
o)
p)
q)
r)
s)
t)
u)
Orbicularis oris
Pectolaris major
External oblique
Sternocleidomsatoid
Biceps brachii
Deltoid
Vastus lateralis
Frontalis
Rectus femoris
Sartorius
Gracilis
Adductor group
Fibularis longus
Temporalis
Orbicularis oculi
Zygomaticus
Masseter
Vastus medialis
Tibialis anterior
Transversus abdominis
Rectus abdominis
10
Identify this part 11
a)
b)
c)
d)
e)
f)
g)
h)
i)
j)
k)
l)
m)
n)
o)
p)
q)
r)
s)
t)
u)
Orbicularis oris
Pectolaris major
External oblique
Sternocleidomsatoid
Biceps brachii
Deltoid
Vastus lateralis
Frontalis
Rectus femoris
Sartorius
Gracilis
Adductor group
Fibularis longus
Temporalis
Orbicularis oculi
Zygomaticus
Masseter
Vastus medialis
Tibialis anterior
Transversus abdominis
Rectus abdominis
10
Identify this part 12
a)
b)
c)
d)
e)
f)
g)
h)
i)
j)
k)
l)
m)
n)
o)
p)
q)
r)
s)
t)
u)
Orbicularis oris
Pectolaris major
External oblique
Sternocleidomsatoid
Biceps brachii
Deltoid
Vastus lateralis
Frontalis
Rectus femoris
Sartorius
Gracilis
Adductor group
Fibularis longus
Temporalis
Orbicularis oculi
Zygomaticus
Masseter
Vastus medialis
Tibialis anterior
Transversus abdominis
Rectus abdominis
10
Identify this part 21
a)
b)
c)
d)
e)
f)
g)
h)
i)
j)
k)
l)
m)
n)
o)
p)
q)
r)
s)
t)
u)
Orbicularis oris
Pectolaris major
External oblique
Sternocleidomsatoid
Biceps brachii
Deltoid
Vastus lateralis
Frontalis
Rectus femoris
Sartorius
Gracilis
Adductor group
Fibularis longus
Temporalis
Orbicularis oculi
Zygomaticus
Masseter
Vastus medialis
Tibialis anterior
Transversus abdominis
Rectus abdominis
10
The contractile unit of muscle is called a
a)
b)
c)
d)
e)
sarcolemma.
sarcomere.
sarcosome.
sarcoplasmic reticulum.
sarcoplasm.
10
Identify this part 14
a)
b)
c)
d)
e)
f)
g)
h)
i)
j)
k)
l)
m)
n)
o)
p)
q)
r)
s)
t)
u)
Orbicularis oris
Pectolaris major
External oblique
Sternocleidomsatoid
Biceps brachii
Deltoid
Vastus lateralis
Frontalis
Rectus femoris
Sartorius
Gracilis
Adductor group
Fibularis longus
Temporalis
Orbicularis oculi
Zygomaticus
Masseter
Vastus medialis
Tibialis anterior
Transversus abdominis
Rectus abdominis
10
A muscle ________ , also known as a muscle
cell, contains a sarcolemma, sarcoplasm,
myofilaments, and myofibrils.
a)
b)
c)
d)
e)
fiber
intercalated disc
T-tubule
myofibril
motor end plate
10
Identify this part 15
a)
b)
c)
d)
e)
f)
g)
h)
i)
j)
k)
l)
m)
n)
o)
p)
q)
r)
s)
t)
u)
Orbicularis oris
Pectolaris major
External oblique
Sternocleidomsatoid
Biceps brachii
Deltoid
Vastus lateralis
Frontalis
Rectus femoris
Sartorius
Gracilis
Adductor group
Fibularis longus
Temporalis
Orbicularis oculi
Zygomaticus
Masseter
Vastus medialis
Tibialis anterior
Transversus abdominis
Rectus abdominis
10
Identify this part G
a)
b)
c)
d)
e)
f)
g)
h)
Myofilaments
Myofibril
Thin filament
Sarcolemma
Mitochondria
T tubules
Thick filament
Sarcoplasmic
reticulum
10
Identify this part 16
a)
b)
c)
d)
e)
f)
g)
h)
i)
j)
k)
l)
m)
n)
o)
p)
q)
r)
s)
t)
u)
Orbicularis oris
Pectolaris major
External oblique
Sternocleidomsatoid
Biceps brachii
Deltoid
Vastus lateralis
Frontalis
Rectus femoris
Sartorius
Gracilis
Adductor group
Fibularis longus
Temporalis
Orbicularis oculi
Zygomaticus
Masseter
Vastus medialis
Tibialis anterior
Transversus abdominis
Rectus abdominis
10
Identify this part E
a)
b)
c)
d)
e)
f)
g)
h)
Myofilaments
Myofibril
Thin filament
Sarcolemma
Mitochondria
T tubules
Thick filament
Sarcoplasmic
reticulum
10
Identify this part 17
a)
b)
c)
d)
e)
f)
g)
h)
i)
j)
k)
l)
m)
n)
o)
p)
q)
r)
s)
t)
u)
Orbicularis oris
Pectolaris major
External oblique
Sternocleidomsatoid
Biceps brachii
Deltoid
Vastus lateralis
Frontalis
Rectus femoris
Sartorius
Gracilis
Adductor group
Fibularis longus
Temporalis
Orbicularis oculi
Zygomaticus
Masseter
Vastus medialis
Tibialis anterior
Transversus abdominis
Rectus abdominis
10
Identify this part 18
a)
b)
c)
d)
e)
f)
g)
h)
i)
j)
k)
l)
m)
n)
o)
p)
q)
r)
s)
t)
u)
Orbicularis oris
Pectolaris major
External oblique
Sternocleidomsatoid
Biceps brachii
Deltoid
Vastus lateralis
Frontalis
Rectus femoris
Sartorius
Gracilis
Adductor group
Fibularis longus
Temporalis
Orbicularis oculi
Zygomaticus
Masseter
Vastus medialis
Tibialis anterior
Transversus abdominis
Rectus abdominis
10
Identify this part 19
a)
b)
c)
d)
e)
f)
g)
h)
i)
j)
k)
l)
m)
n)
o)
p)
q)
r)
s)
t)
u)
Orbicularis oris
Pectolaris major
External oblique
Sternocleidomsatoid
Biceps brachii
Deltoid
Vastus lateralis
Frontalis
Rectus femoris
Sartorius
Gracilis
Adductor group
Fibularis longus
Temporalis
Orbicularis oculi
Zygomaticus
Masseter
Vastus medialis
Tibialis anterior
Transversus abdominis
Rectus abdominis
10
Identify this part 20
a)
b)
c)
d)
e)
f)
g)
h)
i)
j)
k)
l)
m)
n)
o)
p)
q)
r)
s)
t)
u)
Orbicularis oris
Pectolaris major
External oblique
Sternocleidomsatoid
Biceps brachii
Deltoid
Vastus lateralis
Frontalis
Rectus femoris
Sartorius
Gracilis
Adductor group
Fibularis longus
Temporalis
Orbicularis oculi
Zygomaticus
Masseter
Vastus medialis
Tibialis anterior
Transversus abdominis
Rectus abdominis
10
Identify this part 1
a)
b)
c)
d)
e)
f)
g)
h)
i)
j)
k)
l)
Adductor muscle
Gluteus maximus
Gastrocnemius
Latissimus dorsi
Deltoid
Semitendinosus
Soleus
Biceps femoris
Triceps brachii
External oblique
Gluteus medius
Trapezius
10
Identify this part C
a)
b)
c)
d)
e)
f)
g)
h)
Myofilaments
Myofibril
Thin filament
Sarcolemma
Mitochondria
T tubules
Thick filament
Sarcoplasmic
reticulum
10
Identify this part 2
a)
b)
c)
d)
e)
f)
g)
h)
i)
j)
k)
l)
Adductor muscle
Gluteus maximus
Gastrocnemius
Latissimus dorsi
Deltoid
Semitendinosus
Soleus
Biceps femoris
Triceps brachii
External oblique
Gluteus medius
Trapezius
10
Identify this part 3
a)
b)
c)
d)
e)
f)
g)
h)
i)
j)
k)
l)
Adductor muscle
Gluteus maximus
Gastrocnemius
Latissimus dorsi
Deltoid
Semitendinosus
Soleus
Biceps femoris
Triceps brachii
External oblique
Gluteus medius
Trapezius
10
A long, filamentous organelle found within
muscle cells that has a banded appearance is
called a
a)
b)
c)
d)
e)
myofibril
epimysium.
ATP and ADP.
troponin.
tropomyosin.
10
Identify this part I
a)
b)
c)
d)
e)
f)
g)
h)
Myofilaments
Myofibril
Thin filament
Sarcolemma
Mitochondria
T tubules
Thick filament
Sarcoplasmic
reticulum
10
The skeletal muscles store calcium ions in the
terminal cisternae of the
a)
b)
c)
d)
e)
sarcolemma.
sarcomere.
sarcosome.
sarcoplasmic reticulum.
sarcoplasm.
10
Identify this part H
a)
b)
c)
d)
e)
f)
g)
h)
Myofilaments
Myofibril
Thin filament
Sarcolemma
Mitochondria
T tubules
Thick filament
Sarcoplasmic
reticulum
10
The cytoplasm of the muscle cell is called the
a)
b)
c)
d)
sarcolemma.
sarcomere.
sarcosome.
sarcoplasmic
reticulum.
e) sarcoplasm.
10
Identify this part 4
a)
b)
c)
d)
e)
f)
g)
h)
i)
j)
k)
l)
m)
n)
o)
p)
q)
r)
s)
t)
u)
Orbicularis oris
Pectolaris major
External oblique
Sternocleidomsatoid
Biceps brachii
Deltoid
Vastus lateralis
Frontalis
Rectus femoris
Sartorius
Gracilis
Adductor group
Fibularis longus
Temporalis
Orbicularis oculi
Zygomaticus
Masseter
Vastus medialis
Tibialis anterior
Transversus abdominis
Rectus abdominis
10
Identify this part 5
a)
b)
c)
d)
e)
f)
g)
h)
i)
j)
k)
l)
m)
n)
o)
p)
q)
r)
s)
t)
u)
Orbicularis oris
Pectolaris major
External oblique
Sternocleidomsatoid
Biceps brachii
Deltoid
Vastus lateralis
Frontalis
Rectus femoris
Sartorius
Gracilis
Adductor group
Fibularis longus
Temporalis
Orbicularis oculi
Zygomaticus
Masseter
Vastus medialis
Tibialis anterior
Transversus abdominis
Rectus abdominis
10
Skeletal muscle fibers differ from "typical cells"
in that these muscle fibers
a)
b)
c)
d)
e)
lack a plasma membrane.
have many nuclei.
are very small.
lack mitochondria.
contain endoplasmic reticulum.
10
Identify this part 1
a)
b)
c)
d)
e)
f)
g)
h)
i)
j)
k)
l)
m)
n)
o)
p)
q)
r)
s)
t)
u)
Orbicularis oris
Pectolaris major
External oblique
Sternocleidomsatoid
Biceps brachii
Deltoid
Vastus lateralis
Frontalis
Rectus femoris
Sartorius
Gracilis
Adductor group
Fibularis longus
Temporalis
Orbicularis oculi
Zygomaticus
Masseter
Vastus medialis
Tibialis anterior
Transversus abdominis
Rectus abdominis
10
A layer of collagen fibers that surrounds an
entire muscle is called
a)
b)
c)
d)
e)
endomysium.
perimysium.
sarcolemma.
sarcomere.
epimysium.
10
Which of the following characteristics describes
cardiac muscle?
a) Cardiac muscle cells are striated and branched with
intercalated discs.
b) Cardiac muscle cells achieve tetany with every
contraction.
c) Cardiac muscle fibers are multinucleated.
d) Cardiac muscle fibers are faster than skeletal
muscles.
e) Neurons that innervate cardiac muscle tissue are
under voluntary control.
Identify this part 7
a)
b)
c)
d)
e)
f)
g)
h)
i)
j)
k)
l)
m)
n)
o)
p)
q)
r)
s)
t)
u)
Orbicularis oris
Pectolaris major
External oblique
Sternocleidomsatoid
Biceps brachii
Deltoid
Vastus lateralis
Frontalis
Rectus femoris
Sartorius
Gracilis
Adductor group
Fibularis longus
Temporalis
Orbicularis oculi
Zygomaticus
Masseter
Vastus medialis
Tibialis anterior
Transversus abdominis
Rectus abdominis
10
Activities requiring aerobic endurance are
a) characterized by brief, intense workouts
b) characterized by amino acids not being
broken down.
c) characterized by sustained, low levels of
activity
d) characterized fatigue that occurs in a few
minutes.
e) characterized by constant muscle
hypertrophy.
10
A sheath of connective tissue surrounding a
fascicle ________.
a)
b)
c)
d)
e)
endomysium
perimysium
sarcolemma
epimysium
sarcoplasmic
reticulum
10
Identify this part 4
a)
b)
c)
d)
e)
f)
g)
h)
i)
j)
k)
l)
Adductor muscle
Gluteus maximus
Gastrocnemius
Latissimus dorsi
Deltoid
Semitendinosus
Soleus
Biceps femoris
Triceps brachii
External oblique
Gluteus medius
Trapezius
10
Identify this part J
a)
b)
c)
d)
e)
f)
g)
h)
Myofilaments
Myofibril
Thin filament
Sarcolemma
Mitochondria
T tubules
Thick filament
Sarcoplasmic
reticulum
10
The striated appearance of skeletal muscle
results from myofilaments which are composed
of proteins called
a)
b)
c)
d)
e)
the transverse tubule (T-tubule)
the sarcoplasmic reticulum.
cisternae placement.
actin and myosin.
the perimysium.
10
Identify this part 5
a)
b)
c)
d)
e)
f)
g)
h)
i)
j)
k)
l)
Adductor muscle
Gluteus maximus
Gastrocnemius
Latissimus dorsi
Deltoid
Semitendinosus
Soleus
Biceps femoris
Triceps brachii
External oblique
Gluteus medius
Trapezius
10
Identify this part 10
a)
b)
c)
d)
e)
f)
g)
h)
i)
j)
k)
l)
Adductor muscle
Gluteus maximus
Gastrocnemius
Latissimus dorsi
Deltoid
Semitendinosus
Soleus
Biceps femoris
Triceps brachii
External oblique
Gluteus medius
Trapezius
10
Thin connective tissue surrounding each
muscle cell
a)
b)
c)
d)
e)
endomysium.
perimysium.
epimysium.
sarcolemma.
periosteum.
10
Identify this part 6
a)
b)
c)
d)
e)
f)
g)
h)
i)
j)
k)
l)
Adductor muscle
Gluteus maximus
Gastrocnemius
Latissimus dorsi
Deltoid
Semitendinosus
Soleus
Biceps femoris
Triceps brachii
External oblique
Gluteus medius
Trapezius
10
Identify this part 7
a)
b)
c)
d)
e)
f)
g)
h)
i)
j)
k)
l)
Adductor muscle
Gluteus maximus
Gastrocnemius
Latissimus dorsi
Deltoid
Semitendinosus
Soleus
Biceps femoris
Triceps brachii
External oblique
Gluteus medius
Trapezius
10
Tubes that form from the sarcolemma that allow
for electrical stimuli to reach deep into each
fiber are called
a) the transverse tubule pattern. (Ttubule)
b) the sarcoplasmic reticulum.
c) cisternae placement.
d) actin and myosin.
e) the perimysium.
10
Identify this part 8
a)
b)
c)
d)
e)
f)
g)
h)
i)
j)
k)
l)
Adductor muscle
Gluteus maximus
Gastrocnemius
Latissimus dorsi
Deltoid
Semitendinosus
Soleus
Biceps femoris
Triceps brachii
External oblique
Gluteus medius
Trapezius
10
Identify this part 9
a)
b)
c)
d)
e)
f)
g)
Adductor muscle
Gluteus maximus
Gastrocnemius
Latissimus dorsi
Deltoid
Semitendinosus
Trapezius
10
Which of the following statements best
describes how muscles help maintain
homeostasis?
a)
b)
c)
d)
e)
The contractions of skeletal muscles pull on tendons
and move elements of the skeleton.
Skeletal muscles are responsible for guarding the
openings of the digestive and urinary tracts.
Skeletal muscles are responsible for the pumping
action of the heart.
Skeletal muscles support the weight of some internal
organs.
Skeletal muscle contractions help maintain body
temperature.
10
Identify this part 11
a)
b)
c)
d)
e)
f)
g)
h)
i)
j)
k)
l)
Adductor muscle
Gluteus maximus
Gastrocnemius
Latissimus dorsi
Deltoid
Semitendinosus
Soleus
Biceps femoris
Triceps brachii
External oblique
Gluteus medius
Trapezius
10
Identify this part 12
a)
b)
c)
d)
e)
f)
g)
h)
i)
j)
k)
l)
m)
n)
o)
p)
q)
Adductor muscle
Gluteus maximus
Gastrocnemius
Latissimus dorsi
Deltoid
Semitendinosus
Soleus
Biceps femoris
Triceps brachii
External oblique
Gluteus medius
Trapezius
Soleus
Biceps femoris
Triceps brachii
External oblique
Gluteus medius
10
Identify this part A
a)
b)
c)
d)
e)
f)
g)
h)
Myofilaments
Myofibril
Thin filament
Sarcolemma
Mitochondria
T tubules
Thick filament
Sarcoplasmic
reticulum
10
Identify this part F
a)
b)
c)
d)
e)
f)
g)
h)
Myofilaments
Myofibril
Thin filament
Sarcolemma
Mitochondria
T tubules
Thick filament
Sarcoplasmic
reticulum
10
Nonstriated, involuntary muscle is
a)
b)
c)
d)
e)
cardiac.
red skeletal.
smooth.
white skeletal.
intermediate skeletal.
10
What structure divides the skeletal muscle into
compartments and contains collagen fibers,
elastic fibers, blood vessels, and nerves?
a)
b)
c)
d)
fascicle
endomysium
perimysium
epimysium
© 2013 Pearson Education, Inc.
What structure divides the skeletal muscle into
compartments and contains collagen fibers,
elastic fibers, blood vessels, and nerves?
a)
b)
c)
d)
fascicle
endomysium
perimysium
epimysium
© 2013 Pearson Education, Inc.
Structures filled with extracellular fluid, formed
by the tunneling of the sarcolemma through the
muscle fiber, are called
a)
b)
c)
d)
transverse tubules (T tubules).
sarcomeres.
sarcoplasmic reticulum.
myofibrils.
© 2013 Pearson Education, Inc.
Structures filled with extracellular fluid, formed
by the tunneling of the sarcolemma through the
muscle fiber, are called
a)
b)
c)
d)
transverse tubules (T tubules).
sarcomeres.
sarcoplasmic reticulum.
myofibrils.
© 2013 Pearson Education, Inc.
Which of the following accurately lists the levels
of organization within a muscle from largest to
smallest?
a)
b)
c)
d)
muscle fiber, myofilament, myofibril
myofilament, myofibril, muscle fiber
muscle fiber, myofibril, myofilament
Z line, A band, I band, M line
© 2013 Pearson Education, Inc.
Which of the following accurately lists the levels
of organization within a muscle from largest to
smallest?
a)
b)
c)
d)
muscle fiber, myofilament, myofibril
myofilament, myofibril, muscle fiber
muscle fiber, myofibril, myofilament
Z line, A band, I band, M line
© 2013 Pearson Education, Inc.
Which of the following parts of a sarcomere
contain the protein actin only?
a)
b)
c)
d)
I band
A band
H band
All of the answers are correct.
© 2013 Pearson Education, Inc.
Which of the following parts of a sarcomere
contain the protein actin only?
a)
b)
c)
d)
I band
A band
H band
All of the answers are correct.
© 2013 Pearson Education, Inc.
What is the biochemical explanation for rigor
mortis?
a) The sarcoplasmic reticulum is unable to remove
calcium ions from the sarcoplasm.
b) Skeletal muscle fibers have too much ATP stored,
resulting in sustained muscle contractions.
c) Cross-bridges remain detached from the active sites
on actin.
d) None of the answers is correct.
© 2013 Pearson Education, Inc.
What is the biochemical explanation for rigor
mortis?
a) The sarcoplasmic reticulum is unable to remove
calcium ions from the sarcoplasm.
b) Skeletal muscle fibers have too much ATP stored,
resulting in sustained muscle contractions.
c) Cross-bridges remain detached from the active sites
on actin.
d) None of the answers is correct.
© 2013 Pearson Education, Inc.
Which of the following statements regarding fast
skeletal muscle fibers is true?
a) They are small in diameter, have large glycogen
reserves, and have relatively few mitochondria.
b) They are large in diameter, with relatively few
mitochondria.
c) They have a greater oxygen supply than slow fibers.
d) All of the statements are true.
© 2013 Pearson Education, Inc.
Which of the following statements regarding fast
skeletal muscle fibers is true?
a) They are small in diameter, have large glycogen
reserves, and have relatively few mitochondria.
b) They are large in diameter, with relatively few
mitochondria.
c) They have a greater oxygen supply than slow fibers.
d) All of the statements are true.
© 2013 Pearson Education, Inc.
Which of the following areas of the human body
are dominated by slow fibers?
a)
b)
c)
d)
eye and hand muscles
back and calf muscles
hand and foot muscles
pelvic and leg muscles
© 2013 Pearson Education, Inc.
Which of the following areas of the human body
are dominated by slow fibers?
a)
b)
c)
d)
eye and hand muscles
back and calf muscles
hand and foot muscles
pelvic and leg muscles
© 2013 Pearson Education, Inc.
Which of the following statements about how
skeletal muscles use and store energy is true?
a)
b)
c)
d)
At rest, muscles use glycogen stores for energy.
During light activity, muscles generate energy through the
aerobic breakdown of carbohydrates, lipids, or amino acids.
At peak levels of activity, muscles generate energy by aerobic
breakdown of carbohydrates, lipids, or amino acids.
Glycolysis produces ATP more efficiently than aerobic
respiration.
© 2013 Pearson Education, Inc.
Which of the following statements about how
skeletal muscles use and store energy is true?
a) At rest, muscles use glycogen stores for energy.
b) During light activity, muscles generate energy through the
aerobic breakdown of carbohydrates, lipids, or amino
acids.
c) At peak levels of activity, muscles generate energy by aerobic
breakdown of carbohydrates, lipids, or amino acids.
d) Glycolysis produces ATP more efficiently than aerobic
respiration.
© 2013 Pearson Education, Inc.
Curare is best known as the South American "poison
arrow" toxin used for hunting. A synthetic form of
curare is used routinely in emergency care to facilitate
intubation.
Curare specifically blocks acetylcholine (ACh)
receptors. What is the result of administering curare to
a skeletal muscle group?
a)
b)
c)
d)
contraction
relaxation
repeated twitching
depolarization
© 2013 Pearson Education, Inc.
Curare is best known as the South American "poison
arrow" toxin used for hunting. A synthetic form of
curare is used routinely in emergency care to facilitate
intubation.
Curare specifically blocks acetylcholine (ACh)
receptors. What is the result of administering curare to
a skeletal muscle group?
a)
b)
c)
d)
contraction
relaxation
repeated twitching
depolarization
© 2013 Pearson Education, Inc.