Transcript Back - chancescience

This is Jeopardy
Muscle Physiology
1
Category Category Category Category Category
No. 1
No. 2
No. 3
No. 4
No. 5
100
100
100
100
100
200
200
200
200
200
300
300
300
300
300
400
400
400
400
400
500
500
500
500
500
Final Jeopardy
2
C1-100-The answer is…
These proteins are thin filaments with
a covered active site.
actin
Back
3
C1-200-The answer is…
Large diameter, large glycogen
reserves and few mitochondria are
characteristics of this type of muscle
Fast fibers
Back
4
C1-300-The answer is…
What is the advantage of having many
nuclei in skeletal muscle?
Ability to produce large numbers of
proteins and enzymes
Back
5
C1-400-The answer is…
What is it called when all muscle
fibers are in complete contraction?
Complete tetanus
Back
6
C1-500-The answer is…
Skeletal muscles are formed from cells
called:
myoblasts
Back
7
C2-100-The answer is…
These thick fibers look like golf clubs
myosin
Back
8
C2-200-The answer is…
At rest, active sites are covered by
tropomyosin
Back
9
C2-300-The answer is…
The ability of smooth muscle to
function over a wide range of lengths
is called
plasticity
Back
10
C2-400-The answer is…
When acetylcholine binds to the motor
end plate, the membrane becomes
More permeable to sodium ions
Back
11
C2-500-The answer is…
Action potentials are conducted into
skeletal muscle by
T- tubules
Back
12
C3-100-The answer is…
Why do athletes warm up before an
event? (to induce what?)
recruitment
Back
13
C3-200-The answer is…
At what point do sarcomeres attach to
each other?
Z- line
Back
14
C3-300-The answer is…
What is the purpose of creatine?
To store energy from ATP
Back
15
C3-400-The answer is…
This type of muscle fiber is most
resistant to fatigue
Slow twitch.
Back
16
C3-500-The answer is…
This type of contraction is represented
by a single
stimulus/contraction/relaxation
sequence.
twitch
Back
17
C4-100-The answer is…
The functional unit of a skeletal
muscle fiber is:
sarcomere
Back
18
C4-200-The answer is…
The space between the neuron and the
muscle
Synaptic cleft
Back
19
C4-300-The answer is…
The dense layer of collagen fibers on
the outside of a muscle
epimysium
Back
20
C4-400-The answer is…
The type of contraction in which the
muscle fibers produce increased
tension but do not change length.
isometric
Back
21
C4-500-The answer is…
What does the sarcomplasmic
reticulum store and where is it stored?
Calcium ions in the terminal cisternae
Back
22
C5-100-The answer is…
The cell membrane of a skeletal
muscle cell is called the
sarcolemma
Back
23
C5-200-The answer is…
The cytoplasm of a skeletal muscle
cell is called:
sarcoplasm
Back
24
C5-300-The answer is…
In what ways can a skeletal muscle
relax or lengthen? (3)
Gravity, opposing muscle, elastic
forces (titin)
Back
25
C5-400-The answer is…
Calcium ions bind with this molecule
to reveal active sites.
troponin
Back
26
C5-500-The answer is…
What is the purpose of the Cori cycle?
Explain
Lactic acid goes to the liver and is
broken down and returned to the
muscles as pyruvic acid (1/2 glucose).
Back
27
Final Jeopardy
List the events that occur in a muscle contraction
from the initial impulse to return to resting phase.
Impulse sends Ach across synaptic cleft
Ach initiates Na+ through T-tubules
Calcium ions are released from SR
Calcium binds to troponin – tropomyosin moves from active site
Myosin cross bridges bind to actin
Myosin heads pivot towards M line
Myosin heads bind with ATP and detach from actin
Free myosin heads split ATP into ADP and P
Back
End Game
28