Muscle Cell Part 2

Question 1

strong electrically coupled junctions in cardiac muscles that separate cardiac muscle cells from each other

Answer 1

intercalated discs

Question 2

a unit of combined cardiac muscle cells

Answer 2

syncytium

Question 3

cardiac muscles have thicker transverse tubules and forms diads instead of triads (T or F)

Answer 3

true

Question 4

intercalated discs contain ________ which hold the fibers together

Answer 4

desmomes

Question 5

two syncytiums of the cardiac muscles

Answer 5

atrial syncytium and ventricular syncytium

Question 6

a specialized conductive system that divides the heart into two functional syncytiums allowing the atria to contract a short time ahead of the ventricle

Answer 6

A-V bundle

Question 7

which smooth muscle tissue has gap junctions

Answer 7

visceral/ single unit smooth muscle tissue

Question 8

smooth muscle tissue where stimulation of one unit causes contraction of that fiber only

Answer 8

multiunit smooth muscle tissue

Question 9

small pouch like invaginations of plasma membrane which contain extracellular calcium ions used for muscular contraction

Answer 9

caveolae

Question 10

structure in smooth muscle cells where thin filaments attach, functionally similar to z discs

Answer 10

dense bodies

Question 11

single unit muscle cells are connected through ____________ which allow synchronous pattern from one synaptic input

Answer 11

connexins