PSIO 201 Lab Unit III

the more movable end of a muscle is called the

insertion

which statement is true about an agonist?

it is the primary muscle that produces a specific movement

a muscle that assists an agonist by causing a like movement or by stabilizing a joint over which an agonist acts is a(n)

synergist

a muscle mover that opposes, or reverses, a particular movement is a(n)

antagonist

muscle abducts the arm, muscle b adducts the arm. what is the relationship between these two muscles?

they are the antagonists of each other

thin filaments are composed mainly of ___, while thick filaments are composed of ____.

actin; myosin

decreases the angle between two bones

flexion

increases angle between two bones

extension

joint being extended beyond its normal range

hyperextension

the truck of the body moves in a frontal plane laterally away from the body

lateral flexion

lateral movement of body part away from midline

abduction

medial movement of body part toward the body midline

adduction

complex movement that involves flexion, abduction, extension, and adduction is succession.

circumduction

moves front of femur away from body midline

lateral rotation

moves femur toward the midline

medial rotation

palm facing posteriorly, radius and ulna in an X

pronation

palm facing anteriorly, in the anatomical position

supination

inferior movement of body part, to press down

depression

superior movement of body part, to press up

elevation

movement at the ankle joint where top of foot moves toward the leg

dorsiflexion

foot pointing downward away from the leg

plantar flexion

sole of the foot facing laterally

eversion

sole of foot turns medially

inversion

forward movement of a body part from its anatomical position

protraction

backward movement of a body part, returning back to anatomical position

retraction

when thumb is brought over to touch another digit

opposition

movement that returns the thumb and fingers from opposition

reposition

name this muscle shape

circular

name this muscle shape

convergent

name this muscle shape

fusiform

name this muscle shape

parallel

name this muscle shape

bipennate

name this muscle shape

unipennate

name this muscle shape

multipennate

which cirteria is used in naming the gluteus medius?

relative size

small

brevis

four origins

quadriceps

smaller

minor

smallest

minimum

muscle that extends a body part

extensor

trapezoid shaped

trapezius

long

longus

diamond shaped

rhombus

two origins

biceps

muscle that adducts a body part

adductor

muscle that flexes a body part

flexor

larger

major

largest

maximus

shaped like a serrated edge

serratus

three origins

triceps

muscle that abducts a body part

abductor

name this muscle and 1 action

frontalis; elevates the eyebrows.

name this muscle and 1 action

occipitalis; assists frontalis in elevating the eyebrows

name this muscle and 1 action

temporalis; elevates mandible for chewing.

name this muscle and 1 action

masseter; elevates the mandible for chewing.

name this muscle and 1 action

orbicularis oculi; depressing the eyelids to blink.

name this muscle and 1 action

zygomaticus major; elevates lateral corners of mouth for smiling

name this muscle and 1 action

zygomaticus minor; elevates upper lip for smiling.

name this muscle and 1 action

orbicularis oris; closes lips for puckering

name this muscle and 1 action

sternocleidomastoid; laterally rotates head.

name this muscle and 1 action

platysma; depressing the lower lip (pouting)

name this muscle and 1 action

rectus abdominus; flexion of the vertebral column.

name this muscle and 1 action

external oblique; rotation of the trunk

name this muscle and 1 action

internal oblique; rotation of the trunk.

name this muscle and 1 action

transverse abdominus, compression of the abdomen.

name this muscle and 1 action

erector spinae; extension of vertebral column/maintain erect posture

name this portion of the erector spinae

illiocostalis group

name this portion of the erector spinae

longissimus group

name this portion of the erector spinae

spinalis group

name this muscle and 1 action

diaphragm; contracts downwards during inspiration

name this muscle and 1 action

external intercostals; elevates the ribs during inspiration

name this muscle and 1 action

internal intercostals; depress the ribs during labored expiration.

name this muscle and 1 action

pectoralis minor; abducts the scapula away from spine.

name this muscle and 1 action

serratus anterior; superior rotating the scapula

name this muscle

trapezius

name this muscle (yellow) and 1 action

superior fibers of the trapezius; elevates the scapula

name this muscle (blue) and 1 action

middle fibers of the trapezius; adducts the scapula

name this muscle (red) and 1 action

inferior fibers of the trapezius; depress the scapula

name this muscle and 1 action

rhomboid minor; elevate scapula

name this muscle and 1 action

rhomboid major; elevate scapula

name this muscle and 1 action

levator scapulae; elevate scapula

name this muscle and 1 action

pectoralis major; flexion of the arm

name this muscle and 1 action

latissimus dorsi; extending the arm

name this muscle

deltoid

name this muscle and 1 action

anterior fibers of the deltoid; flex the arm (lifting it forward)

name this muscle (green) and 1 action

middle fibers of the deltoid; abduct the arm

name this muscle (blue) and 1 action

posterior fibers of the deltoid; extend the arm (backwards)

name this muscle and 1 action

supraspinatus; abduct the arm

name this muscle and 1 action

infraspinatus; adduct the arm

name this muscle and 1 action

teres minor; extend the arm

name this muscle and 1 action

teres major; adducting the arm

name this muscle and 1 action

subscapularis; medially rotate the arm

name this muscle and 1 action

biceps brachii; flexing the forearm

name this muscle and 1 action

brachialis; flexing the forearm

name this muscle and 1 action

brachioradialis; pronating the forearm

name this muscle and 1 action

pronator teres; pronate the forearm

name this muscle and 1 action

triceps brachii; extension of forearm and arm

name this muscle (yellow) and 1 action

flexor carpi radialis; flexes the hand

name this muscle (pink) and 1 action

palmaris longus; flex the hand

name this muscle (blue) and 1 action

flexor capri ulnaris; flexes the hand