9/1/22

Question 1

Irritability or Excitability

Answer 1

How easy a muscle can contract

Question 2

Contractility

Answer 2

ability to contract and develop force against resistance when stimulated

Question 3

Extensibility

Answer 3

ability for muscle to be passively stretched beyond its normal resting length

Question 4

Elasticity

Answer 4

ability of a muscle to return to its origins length following stretching

Question 5

Action

Answer 5

specific movement of joint results from a concentric contraction of a muscle which crosses joint

Question 6

Innervation (nerve)

Answer 6

Nerve going to muscle
- Segment of nervous system providing stimulus to muscle fibers within a specific muscle

Question 7

Gaster (belly or body)

Answer 7

central, flashy portion of the muscle that generally increases in diameter as the muscle contracts

Question 8

Tendon

Answer 8

cordlike connective tissue in appearance, connects muscles to bone and other structures

Question 9

Ligaments

Answer 9

connect bone to bone

Question 10

Aponeurosis

Answer 10

Binds muscle together to connect muscle to bone, connective tissue resembling flattened tendon

Question 11

Fascia

Answer 11

thin casing of connective tissue that holds every organ and muscle in place

Question 12

Retinaculum

Answer 12

retains tendons close to the body

Question 13

Origin

Answer 13

proximal attachment of a muscle or part of body closest to midline (least movable part)

Question 14

Insertion

Answer 14

distal attachment or part furthest from the line of the body (most movable part)

Question 15

Contraction

Answer 15

when tension is developed in a muscle as a result of a stimulus

Question 16

Agonist muscles

Answer 16

cause joint motion through a specified plane of motion when contracting (known as primary movers)

Question 17

Primary mover

Answer 17

contribute significantly more to joint movement

Question 18

Assistant movers

Answer 18

contribute significantly less to joint motion

Question 19

Antagonist muscle

Answer 19

aganoist muscle must relax for agonist to contract (vice versa)

Question 20

Stabilizer

Answer 20

Stabilize the area to enable other body segment to exert force and movement, fixators

Question 21

Synergist

Answer 21

helper muscle, assist in action of agonist

Question 22

Depression

Answer 22

scapula moves downward, inferior movement

Question 23

Elevation

Answer 23

scapular moves upward, superior movement

Question 24

Abduction/Protraction

Answer 24

scapula moves laterally away from spinal column

Question 25

Adduction/Retraction

Answer 25

scapula moves medially toward spinal column

Question 26

Downward rotation

Answer 26

inferior angle moves medially → toward spinal column

Question 27

Upward rotation

Answer 27

inferior angle moves laterally → away from spinal column