Final Exam, 8-9 Lecture
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Transcript of Final Exam, 8-9 Lecture
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. SmoothB. 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. All of this
B. Most of this
C. Some of this
D. 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. ATP
B. Myosin
C. Actin
D. 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.