Transcript Unit 5 Day 1 Anatomy keep

Unit 5 Day 1 Anatomy
To understand is
to forgive, even
oneself.
Alexander Chase
Today’s Agenda
Return
Tests
Notes on objectives 1-3
Practice objectives 1-3
Plans for tomorrow
Fig. 38.26, p. 663
SMOOTH MUSCLE
SKELETAL MUSCLE
width
of one
muscle
cell
cells
teased
apart for
clarity
cell
nucleus
CARDIAC MUSCLE
Obj. 1
junction
between
adjacent
cells
Fig. 33.8, p. 566
triceps relaxes
biceps contracts at
the same time, and
pulls forelimb up
triceps
contracts,
pulls the
forelimb
down
at the same
time biceps
relaxes
Fig. 38.18, p. 656
one muscle cell
bundle of muscle
cells surrounded
by connective
Tissue (endomysium
biceps
outer sheath of connective
tissue around muscle
(epimysium)
Fig. 33.9, p.
566
muscle’s outer sheath
(connective tissue)
fascicle
muscle cell
myofibril
perimysium
Fig. 38.20a, p. 658
one myofibril
inside cell:
sarcomere
Z band
sarcomere
Z band H zone Z band
Fig. 38.20b, p. 658
I band
A band
I band
Thin
filament
Thick
filament
one actin
thin filament
molecule
Arrangement of actin molecules in the thin filaments of a sarcomere
parts of
myosin
molecule
thick filament
Arrangement of myosin molecules in the thick filaments of a sarcomere
Fig. 38.20c, p. 658
Cross-bridge
forms between
an actin and a
myosin filament
sarcomere
between
contractions
actin
myosin
actin
same
sarcomere
contracted
Actin filament
slides past myosin
filament, toward
sarcomere’s
center, in a
power stroke
The cross
bridge is
broken
Another crossbridge forms
between same
filaments
Another power
stroke slides actin
filament closer
to the center of
sarcomere
Fig. 38.21, p. 659
TRICEPS BRACHII
BICEPS BRACHII
PECTORALIS MAJOR
DELTOID
SERRATUS ANTERIOR
TRAPEZIUS
EXTERNAL OBLIQUE
LATISSIMUS DORSI
RECTUS ABDOMINUS
GLUTEUS MAXIMUS
ADDUCTOR LONGUS
SARTORIUS
BICEPS FEMORIS
QUADRICEPS FERMORIS
GASTRONEMIUS
TABIALIS ANTERIOR
Fig. 38.19, p. 657
For Tomorrow
Gloves
Groups
Depelting
ADP + Pi
Pathway 1
DEPHOSPHORYLATION
CREATINE PHOSPHATE
Relaxation
Contraction
creatine
Pathway 2
AEROBIC RESPIRATION
oxygen
Pathway 3
GLYCOLYSIS ALONE
glucose from bloodstream and
from glycogen breakdown in cells
Fig. 38.22, p. 660
motor
neuron
section from
spinal chord
Signal from the neuron
system travel along spinal
cord, down motor neuron
T tubule
Sarcoplasmic reticulum
(calcium storage)
plasma
membrane
of skeletal
muscle cell
one of the
myofibrils
inside the
muscle cell
section from a skeletal muscle
Z band
Z band
Fig. 38.23, p. 660,61
troponin
tropomyosin
myosin head
actin
myosin
binding site
blocked
myosin head
actin
Fig. 38.24, p. 661
peak
relaxation
stimulus
contraction starts
time
number of stimuli per second
number of stimuli per second
tetanic
contraction
twitch
Fig. 38.25, p. 662
repeated stimulation
receptor
endings
peripheral
axon
cell
body
axon
axon
ending
cell
body
axon
cell
body
axon
axon
endings
dendrites
SENSORY NEURON
INTERNEURON
dendrites
MOTOR NEURON
Spinal cord
STIMULUS
Biceps stretches.
RESPONSE
Biceps contracts
Fig. 34.13, p. 583
Click to view
animation.
animation
Unit 5 Day 2
The most
difficult thing
in life is to
know yourself.
Thales
Today’s Agenda
Depelting
Depelt
Clean-up
instructions
Depelt
 Specimen
abdominal side up on
tray.
 Incision through pelt only…no
muscles.
 Cut fascia, lift, cut fascia.
Unit 5 Day 3
If you want to be respected by others, the
great thing is to respect yourself.
Fyodor Dostoyevsky
Unit 5 Day 4
Too many people overvalue what they
are not and undervalue what they are.
Malcom Forbes
Unit 5 Day 5
Striving for excellence motivates.
Striving for perfection is
demoralizing.
Dr. Harriet Braker