Muscle Physiology

Question 1

Percentage of muscle in the human body.

Answer 1

50%

Question 2

Percentage of skeletal muscle of a human body.

Answer 2

40%

Question 3

Percentage of smooth and cardiac muscles that human has?

Answer 3

10%

Question 4

what are the functions of muscles?

Answer 4

Produce movement
Maintain posture
Stabilize joints
Generate heat

Question 5

Characteristics of the skeletal muscles.

Answer 5

-Long, Cylindrical
-Multinucleated
-Peripherally located
nuclei
-Striated appearance
-Voluntary

Question 6

A Properties that has an ability to receive and respond to a stimulus?

Answer 6

Excitability

Question 7

A Properties that has an ability to shorten forcibly when adequately stimulated?

Answer 7

Contractibility

Question 8

A Properties that has an ability to be stretched or extended?

Answer 8

Extensibility

Question 9

A Properties that has an ability of a muscle fiber to resume its resting length?

Answer 9

Elasticity

Question 10

A cell membrane of the muscle fiber.

Answer 10

Sarcolemma

Question 11

composed of ACTIN and MYOSIN filaments.

Answer 11

Myofibrils

Question 12

Basic repeating and functional unit of the muscle

Answer 12

Sacromere

Question 13

Light Band on either side of Z-line; Actin only.

Answer 13

I- Band

Question 14

Dark band between I-Bands; Mostly Myosin.

Answer 14

A-Band

Question 15

Light area in the middle of the sacromere, Myosin only.

Answer 15

H- Zone

Question 16

Dark line in the middle of the sacromere, Myosin only.

Answer 16

M-line

Question 17

Bisects the I-band, where ACTIN and MYOSIN attach upon contraction.

Answer 17

Z-dics

Question 18

intercellular fluid that fills the spaces between myofibrils.

Answer 18

Sarcoplasm

Question 19

Specialized endoplasmic reticulum of skeletal muscles.

Answer 19

Sarcoplasmic Reticulum

Question 20

stretching adds new sarcomeres,
disappears if remained shortened

Answer 20

Length Adjustment

Question 21

muscle total mass decrease

Answer 21

Atrophy