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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. Smooth Striated a. skeletal b. cardiac.

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final exam 8 9 lecture

Final Exam, 8-9 Lecture

JES A121A, Tuesday, May 19,

2-5

final exam 9 10 lecture

Final Exam, 9-10 Lecture

JES A121A, Tuesday, May 19, 9-12

final exam 2 3 lecture

Final Exam, 2-3 Lecture

JES A121A, Friday, May 15, 9 -12

two major types of muscle
Two major types of muscle
  • Smooth
  • Striated a. skeletal

b. cardiac

my knowledge about striated muscle
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
I know
  • All of this
  • Most of this
  • Some of this
  • None of this
slide8

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?

why does skeletal muscle relax
Why does skeletal muscle relax?
  • the action potential is over and the muscle fiber returns to its resting membrane potential
  • Ca++ is sequestered into the SR
  • muscle runs out of ATP
  • an inhibitory neurotransmitter is released that causes the muscle to relax.