Final Exam, 8-9 Lecture
JES A121A, Tuesday, May 19,
2-5
Final Exam, 9-10 Lecture
JES A121A, Tuesday, May 19, 9-12
Final Exam, 2-3 Lecture
JES A121A, Friday, May 15, 9 -12
Two major types of muscle
A. Smooth
B. Striated
a. skeletal
b. cardiac
My knowledge about striated
muscle
I know the structure: A, I bands, Z lines
I know the sliding filament hypothesis, the
cycling of actin and myosin
I know how muscle relaxes
I understand how muscle contractions are
controlled by nerves (motor units)
I know what twitch and tetanus mean
I know
A.
B.
C.
D.
All of this
Most of this
Some of this
None of this
Set-up for the experiment
How does a muscle fiber contract?
How does the nerve command the
contraction?
How does a muscle fiber relax?
How is smooth, graded force
generated in a muscle?
The length-tension relationship
What is the switch for muscle
fiber contraction?
A.
B.
C.
D.
ATP
Myosin
Actin
Ca++
Why does skeletal muscle relax?
A. the action potential is over and the muscle
fiber returns to its resting membrane
potential
B. Ca++ is sequestered into the SR
C. muscle runs out of ATP
D. an inhibitory neurotransmitter is released that
causes the muscle to relax.