Exam 2

Question 1

muscle pull never

Answer 1

push

Question 2

do muscles lengthen

Answer 2

no they shorten with contraction

Question 3

muscle anchors to bone=

Answer 3

at least 2 points of attachment

Question 4

fixed end, usually most stationary/ proximal end of muscle

Answer 4

origin

Question 5

more movable end, usually distal end of muscle

Answer 5

insertion

Question 6

with contraction muscles shorten, insertion end moves towards

Answer 6

origin end

Question 7

can action be counteracted by another group and is so what

Answer 7

typically on opposite portion of limb or trunk

Question 8

muscles fall into different categories depending on movement of the

Answer 8

movement

Question 9

prime movers, major force for movement. flexion action

Answer 9

agonists

Question 10

example of an agonist

Answer 10

biceps brachii

Question 11

oppose movement, counteracts agonist. extension. prevent hyperextension

Answer 11

antogonist

Question 12

example of antagonists

Answer 12

triceps brachi

Question 13

aid agonists in promoting same movement. reducing undesireable/ unnessary movements

Answer 13

syngergists

Question 14

two examples of synergists

Answer 14

brachialis and brachioradialis

Question 15

helps maintain upright posture, stabilizers. stabilizes origin area while insertion is moving

Answer 15

fixator muscles

Question 16

Fascicles in circle around opening, Act as Sphincters to close

Answer 16

circular

Question 17

example of circular muscle shape

Answer 17

orbicularis oculi

Question 18

Fascicles converge, Wide area - Common tendon. Triangular shape.

Answer 18

convergent

Question 19

example of convergent muscle shape

Answer 19

pectoralis major

Question 20

fasiciles feathered to long axis. largest ROM

Answer 20

parallel

Question 21

example of parallel muscle shape

Answer 21

rectus abdominus

Question 22

fasicicles feathered from common tendon

Answer 22

pennate

Question 23

3 classes of pennate

Answer 23

uni and multipennate, bipennate

Question 24

1 side of tendon (semimembraneous)

Answer 24

unipennate

Question 25

2 sides (rectus femoris)

Answer 25

bipennate

Question 26

multiple directions around central tendon (deltoid)

Answer 26

multipennate

Question 27

fascicles run length of muscle, wide belly with tapered ends

Answer 27

fusiform

Question 28

example of fusiform muscle shape

Answer 28

biceps brachii