Chapter 9 Part 1

Question 1

Skeletal and smooth muscle cells are _______ and are called _______.

Answer 1

Skeletal and smooth muscle cells are elongated and are called muscle fibers.

Question 2

What two filaments does muscle contraction depend on?

Answer 2

myosin and actin

Question 3

In terms of muscle tissue, what is the ability to receive and respond to stimuli?

Answer 3

Excitability, or irritability

Question 4

In terms of muscle tissue, what is the ability to shorten forcibly?

Answer 4

contractility

Question 5

In terms of muscle tissue, what is the ability to be stretched or extended?

Answer 5

extensibility

Question 6

In terms of muscle tissue, what is the ability to recoil and resume the original resting length?

Answer 6

Elasticity

Question 7

_______ muscles are responsible for all locomotion.

Answer 7

Skeletal muscles are responsible for all locomotion.

Question 8

______ muscle is responsible for coursing the blood through the body.

Answer 8

Cardiac muscle is responsible for coursing the blood through the body.

Question 9

______ muscle helps maintain blood pressure, and squeezes or propels substances through organs.

Answer 9

Smooth muscle helps maintain blood pressure, and squeezes or propels substances through organs.

Question 10

What are the 3 connective tissue sheaths of skeletal muscle?

Answer 10

3 Connective Tissue Sheaths of Skeletal Muscle

1. ) Epimysium
2. ) Perimysium
3. ) Endomysium

Question 11

Name and describe the 3 connective sheaths of skeletal muscle.

Answer 11

1. ) **Epimysium **- an overcoat of dense regular connective tissue that surrounds the entire muscle.
2. ) Perimysium - fibrous connective tissue that surrounds groups of muscle fibers called fascicles.
3. ) Endomysium - fine sheath of connective tissue composed of reticular fibers surrounding each muscle fiber.