Muscle Physiology ML 2

Question 1

Skeletal muscle is a ___ tissue that propagates APs along its _____

Answer 1

excitable tissue; membrane

Question 2

What part of the PNS coordinates with skeletal muscle

Answer 2

somatic motor division

Question 3

What is the motor plate of the NMJ

Answer 3

highly folded region of the sarcolemma that lives directly beeneth the alpha motor neuron terminals

Question 4

What does the motor plate have

Answer 4

high concentrations of nACh receptors which are ligand gates ionotropic receptors

Question 5

Botox

Answer 5

breaks down snare protreins and affects ACh release which reduces activity of muscles

Question 6

Pesticides and Nerve Gas

Answer 6

inhibit activity of enzyme so Ach stays bound to receptor (paralysis and no repol)

Question 7

Plant Toxin

Answer 7

antagonist: binds to receptor and blacks Ach
-inhibits process and causes paralysis

Question 8

Syntheitc

Answer 8

Agonist: bind to receptor and causes paralysis