Muscular System

Question 1

Skeletal Muscle

Answer 1

Voluntary, against the bones

Question 2

Cardiac Muscle

Answer 2

Involuntary, in heart

Question 3

Smooth Muscle

Answer 3

Involuntary, bladder, stomach, uterus, intestines

Question 4

Excitability

Answer 4

Able to send electrical waves (action potential) along the entire length

Question 5

Elasticity

Answer 5

Having the ability to recoil back to its original length

Question 6

Extensibility

Answer 6

Allows muscles to stretch or extend

Question 7

Contractility

Answer 7

Allows muscles to pull on its attachment and shorten

Question 8

Fascicle

Answer 8

The muscle fibers that are arranged in bundles

Question 9

Epimysium

Answer 9

Outermost layer, surrounds entire muscle

Question 10

Perimysium

Answer 10

Separates and surrounds fascicles

Question 11

Endomysium

Answer 11

Surrounds each individual muscle fiber

Question 12

Sarcolemma

Answer 12

Muscle fiber membrane

Question 13

Myofibril

Answer 13

Individual parallel muscle fibers (made up of actin and myosin)

Question 14

Sarcoplasm

Answer 14

Inner material surrounding the myofibril (equivalent to the cell’s cytoplasm)

Question 15

Actin

Answer 15

Thin filaments

Question 16

Myosin

Answer 16

Thick filaments