CHAPTER 9

Question 1

Sacromere

Answer 1

the region between two successive z discs. smallest contractile unit of a muscle fiber

Question 2

Poperties of Muscular Tissue

Answer 2

Excitability
Contractility- DIFFERENTIATES MUSCLES FROM ALL OTHER TISSUES
Extensibility
Elasticity

Question 3

Muscle Excitability

Answer 3

(responsiveness) the ability for the cell to receive and respond to stimulus by changing it membrane potential. Typically a chemical stimulus.

Question 4

Contractility

Answer 4

he ability to shorten forcibly when adequately stimulated. THIS SETS MUSCLES APART FROM OTHER TISSUE TYPES

Question 5

Extensibility

Answer 5

the ability to extend or contract. Muscle cells shorten when contracting, but they can stretch, even beyond their resting length, when they are at rest.

Question 6

Elasticity

Answer 6

the ability for the muscle to recoil and resume its resting length after stretching

Question 7

Connective Tissue Sheaths

Answer 7

Endomysium
Perimysium
Epimysium

Question 8

Endomysium

Answer 8

dense irregular connective tissue that surrounds the whole muscle

Question 9

Perimysium

Answer 9

layer of dense irregular connective tissue that surrounds fascicles (muscle fiber bundles)

Question 10

Epimysium

Answer 10

wispy sheath of connective tissue that surrounds each individual muscle fiber. consists of fine areolar connective tissue