A&p 1 Lab Test #2

Front 1

muscle fibers

Back 1

skeletal muscle cells

Front 2

fascicles

Back 2

skeletal muscle fibers are organized into groups, or subunits, called fascicles.

Front 3

endomysium

Back 3

connective tissue found in fascicles that fills the space btwn the fibers.

Front 4

perimysium

Back 4

layer of connective tissue which surrounds the fascicle.

Front 5

epimysium

Back 5

tough, outer sheath of connective tissue that surrounds the perimysium & fascicles.

Front 6

tendon

Back 6

extention of endomysium beyond the muscle resembling a rope-like cord. attach muscles to bone.

Front 7

insertion

Back 7

end of the muscle that is attached to the movable bone.

Front 8

origin

Back 8

end of muscle that is attached to the immovable bone.

Front 9

fixators

Back 9

counteracting skeletal muscles that assist the agonist muscle by contracting at the same time to prevent movement of the bone attached to the origin end of the muscle.

Front 10

agonist

Back 10

muscle of movement that is mainly responsible for performing the movement. ex: biceps branchii muscle, which is the primary muscle involved in flexing (bending) the elbow.

Front 11

antagonist

Back 11

muscles that oppose the action of the agonist in order to return the joint to its original position. ex: triceps brachii.

Front 12

synergists

Back 12

muscles that contract at same time to assist the agonist muscle. ex: brachioradialis contracts at same time as biceps brachii.

Front 13

joint action

Back 13

movement of the joint when the muscle that is crossing it contracts.

Front 14

flexion

Back 14

bending joint

Front 15

extension

Back 15

straightening joint

Front 16

abduction

Back 16

moving body part away from midline.

Front 17

adduction

Back 17

moving body part towards midline.

Front 18

elevation

Back 18

raising body part

Front 19

depression

Back 19

lowering body part

Front 20

rotation

Back 20

moving body part around its axis

Front 21

protraction

Back 21

moving body part anteriorly

Front 22

retraction

Back 22

moving body part posteriorly

Front 23

pronation

Back 23

turning palm posteriorly

Front 24

supination

Back 24

turning palm anteriorly

Front 25

circumduction

Back 25

circular (conical) movement. ex: shoulder joint. combo of flexion, extension, adduction, & abduction.

Front 26

opposition

Back 26

opposable thumb. toole use.

Front 27

inversion

Back 27

turning sole of foot inward.

Front 28

eversion

Back 28

turning sole of foot outward.

Front 29

dorsiflexion

Back 29

flexing ankle to pull foot towards shin

Front 30

plantar flexion

Back 30

extending ankle (pointing toes)

Front 31

rectus (w/ regards to direction of muscle fibers)

Back 31

straight

Front 32

transverse (w/ regards to direction of muscle fibers)

Back 32

horozontal

Front 33

oblique (w/ regards to direction of muscle fibers)

Back 33

diagonally

Front 34

pectoralis (w/ regards to location)

Back 34

chest

Front 35

brachialis (w/ regards to location)

Back 35

arm

Front 36

external (w/ regards to location)

Back 36

outer

Front 37

internal (w/ regards to location)

Back 37

inner

Front 38

ventralis (w/ regards to location)

Back 38

front

Front 39

abdominalis (w/ regards to location)

Back 39

abdomen

Front 40

deltoid (w/ regard to shape)

Back 40

triangular

Front 41

trapezius (w/ regard to shape)

Back 41

trapezoid

Front 42

longus (w/ regard to shape)

Back 42

long