action of orbicularis oculi

closing eye/ squinting/ blinking

funct of masseter and temporalis

mastication; opening/closing jaw

sternocleidomastoid funct

contracting one side rotates the head to the opposite side; contracting both sides flexes the neck.

inf attachments of sternocleidomastoid

the manubrium of the sternum and the medial portion of the clavicle

elevating the scapula, extending the head/neck.

forms a partition between the thoracic and abdominal cavities.

ext intercostals during breathing

elevates/ raises ribs during inhalation

int intercostals during breathing

depressed ribs during exhalation

general actions of the abdominal muscle

flexion and rotation of the trunk and compression of abdominal contents

protract scapula; ant thoracic muscles; pull scapula twrd ribcage

funct of latissimus dorsi

extension, adduction, and medial rotation of the arm at the shoulder

funct of biceps brachii

flexion of the forearm at the elbow, and supination of the forearm.

funct of triceps brachii

extension of the forearm at the elbow.

tensor fasciae latae funct

abduction and flexion of the thigh; it also tightens the iliotibial tract on the lateral thigh.

where do all 4 parts of quadriceps femoris insert

patellar ligament and extend the leg at the knee.

funct of rectus femoris

unlike the other quadriceps, it also flexes the thigh at the hip because it crosses both joints.

funct gluteus maximus

powerful extension of the thigh at the hip

general actions of the hamstrings

extension of the thigh at the hip and flexion of the leg at the knee.

tibialis anterior funct

dorsiflexion and inversion of the foot.

Describe the general function of the muscles of the anterior compartment of the leg

dorsiflexion of the foot at the ankle (lifting the toes), with some contribution to inversion and toe extension.

plantar flexion of the foot, and assistance with flexion of the leg at the knee

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vocab ch11- anatomy

Question	Answer
agonist	prime mover
synergist	helps prime mover
antagonist	opp of prime mover
action of orbicularis oculi	closing eye/ squinting/ blinking
action of orbicularis oris	closes/ puckers lips
facial expression muscles typically insert into____ rather than _____which is what allows them to move the face.	skin; bone
funct of masseter and temporalis	mastication; opening/closing jaw
sternocleidomastoid funct	contracting one side rotates the head to the opposite side; contracting both sides flexes the neck.
inf attachments of sternocleidomastoid	the manubrium of the sternum and the medial portion of the clavicle
funct of trapezius	elevating the scapula, extending the head/neck.
diaphragm	forms a partition between the thoracic and abdominal cavities.
what does diaphragm do during inhalation	compresses, sucking in O2
ext intercostals during breathing	elevates/ raises ribs during inhalation
int intercostals during breathing	depressed ribs during exhalation
transversus abdominus	deepest abdominal muscle
general actions of the abdominal muscle	flexion and rotation of the trunk and compression of abdominal contents
serratus anterior	protract scapula; ant thoracic muscles; pull scapula twrd ribcage
funct of latissimus dorsi	extension, adduction, and medial rotation of the arm at the shoulder
funct of biceps brachii	flexion of the forearm at the elbow, and supination of the forearm.
funct of triceps brachii	extension of the forearm at the elbow.
tensor fasciae latae funct	abduction and flexion of the thigh; it also tightens the iliotibial tract on the lateral thigh.
where do all 4 parts of quadriceps femoris insert	patellar ligament and extend the leg at the knee.
funct of rectus femoris	unlike the other quadriceps, it also flexes the thigh at the hip because it crosses both joints.
funct gluteus maximus	powerful extension of the thigh at the hip
general actions of the hamstrings	extension of the thigh at the hip and flexion of the leg at the knee.
tibialis anterior funct	dorsiflexion and inversion of the foot.
Describe the general function of the muscles of the anterior compartment of the leg	dorsiflexion of the foot at the ankle (lifting the toes), with some contribution to inversion and toe extension.
gastrocnemius funct	plantar flexion of the foot, and assistance with flexion of the leg at the knee
soleus funct	plantar flexion of the foot.

Created by: b.marshall

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