Chapter 6: The Muscular System

Question 1

How much body mass is made up of muscle?

Answer 1

Almost one half.

Question 2

What are the three muscle types?

Answer 2

Skeletal, Cardiac, and Smooth

Question 3

Which types of muscle are called muscle fibers?

Answer 3

Skeletal and Smooth

Question 4

Which muscle type is the largest?

Answer 4

Skeletal

Question 5

Endomysium

Answer 5

Sheath that wraps each muscle fiber.

Question 6

Perimysium

Answer 6

A large sheath that wraps groups of muscle fibers that are wrapped in a endomysium.

Question 7

Fascicle

Answer 7

A group of muscles that are wrapped together in perimysium.

Question 8

Epimysium

Answer 8

Tough “over-coat” that which covers the entire muscle. Wrapped around several fascicles which forms an entire muscle.

Question 9

Aponeuroses

Answer 9

Sheetlike combinations of epimysia.

Question 10

Tendons

Answer 10

Cordlike combinations of epimysia.

Question 11

Three major defining characteristics of skeletal muscle.

Answer 11

Skeletal, striated, voluntary.

Question 12

Three major defining characteristics of smooth muscle.

Answer 12

Visceral, non-striated, and involuntary.

Question 13

Three major defining characteristics of cardiac muscle.

Answer 13

Cardiac, striated, and involuntary.

Question 14

Are cardiac muscle fibers branching?

Answer 14

Yes

Question 15

What joins cardiac muscle fibers together?

Answer 15

Intercalated discs

Question 16

What type of muscle tissue does “muscle system” refer to?

Answer 16

Skeletal muscle.