muscle

Question 1

skeletal muscle cells

Answer 1

multinucleate cells with satellite regenerative cells

Question 2

smooth muscle cell features

Answer 2

innervated by autonomic nerves
focal densities = intermediate filaments insert here, where contractile fibres, intermediate filaments and sarcolemma attach and intersect
dense bodies = where actin attaches, similar to Z line
caveloae = small invaginations, not very functional

Question 3

cardiac myocyte cell features

Answer 3

ventricular = large, nonnuclear, bulk of muscle 
atrial = smaller than ventirucal
SAN = very thin, less cellular structure

Question 4

stimulation of smooth muscle in blood vessels of skin, GI, kidney, brain

Answer 4

respond to NA and adrenaline
sympathetic
vasoconstriction via alpha 1

Question 5

stimulation of blood vessels in skeletal or cardiac muscle

Answer 5

catecholamines cause vasodilation

beta receptors

Question 6

action of cGMP on smooth muscle

Answer 6

inhibits contraction

activates myosin light chain phosphatase

Question 7

action of cAMP on smooth muscle

Answer 7

inhibits contraction

inhibits MLCK

Question 8

action of NO in smooth muscle

Answer 8

produce cGMP

relaxation

Question 9

smooth muscle - excitatory our inhibitory innervation

Answer 9

can be triggered to contract or relax by sym or parasym and depends on specific area with receptors present