Ch. 7

Question 1

What are the 3 types of muscle tissue

Answer 1

Skeletal tissue

Cardiac tissue

Smooth tissue

Question 2

What kind of fibers are in skeletal muscle and what are their functions?

Answer 2

Fast fibers and slow fibers.

Fast Fibers:
Large diameter fibers, immediate response, Large glycogen reserves, Relatively few mitochondria, Extreme power, but not much endurance

Slow Fibers
Smaller fibers, contains myoglobin, higher concentration of mitochondria, capable of continued contraction

Question 3

What are the functions of cardiac muscle?

Answer 3

Cardiac muscle cells branch and connect at intercalated disks.

Cardiac cells contract without neural stimulation

Cannot undergo tetanus (cramping)

Large supply of mitochondria

Question 4

What are the characteristics of smooth muscle?

Answer 4

Found in almost every organ

Form sheets, bundles or sheaths around other tissues

Lack myofibril, sarcomeres, and striations

Use calcium differently

Capable of contracting over a larger range

Question 5

What are the functions of muscle?

Answer 5

Produce movement

Maintain posture and body position

Support the soft tissues

Guard entrances/exits

Maintain body temperature