Smooth Muscle

Question 1

Visceral organs and blood vessels has this type of muscle and can remain contracted for longer periods. Has absence of regular pattern of cross-striation

Answer 1

Smooth muscle

Question 2

Type of smooth muscle that js connected by gap junction, behave syncytium, found in** gastrointestinal tract (GIT)**

Answer 2

Single unit

Question 3

Tyoe of smooth muscle without gap junction

Answer 3

Multiunit

Question 4

Arrangement of fibers of blood vessels and the contraction of muscle ____ the diameter of structure

Answer 4

Circular; narrows

Question 5

Arrangement of fibers in GI tract the inner is thick circular, the outer is thin longitudinal

Answer 5

Circular and longitudinal

Question 6

Arrangement of fibers found in uterus, urinary bladder which contracts and decrease volume by ________

Answer 6

Circular, longitudinal and oblique; expelling contents

Question 7

The invagination of smooth muscle, which increase the surface area

Answer 7

Caveolae

Question 8

Myofilaments that are interspered in thin and fewer in cardiac

Answer 8

Thick

Question 9

Present in between thick and thin that provide cytoskeletal support with small dark areas called ___ attached to cell membrane

Answer 9

Intermediate; dense bodies

Question 10

Myofilament that is composed if actin and tropomyosin

Answer 10

Thin

Question 11

Stimulus in Excitatory - _____ in MP while ____ in inhibitory

Answer 11

High? ; low?

Question 12

Shape of AP in GIT and caused by L -type Ca2+ channel

Answer 12

Spike

Question 13

Caused by L-type Ca2+ and K+ channels found in uterus, ureter

Answer 13

AP with prolonged plateau

Question 14

Shape of AP – Pacemaker potential

Answer 14

Multispikes

Question 15

Depolarization of smooth muscle is caused by _____, repolarization is caused by ____

Answer 15

Ca++ influx; decrease in Ca++,Na++, efflux of K+