BIOL 252L Lab 5 (Muscles of Head, Neck, Upper Limb + Movement)

frontalis

raises eyebrows

orbicularis oculi

closes eyelids

zygomaticus major

raises corners of lips

buccinator

compresses cheeks

occipitalis

tenses scalp

platysma

tenses neck and depresses mandible

orbicularis oris

purses lips

depressor anguli oris

lowers corners of lips

masseter

elevates mandible

temporalis

elevates mandible

medial pterygoid

elevates jaw, moves jaw medially

lateral pterygoid

protrudes lower jaw

trapezius

retraction, elevation, and depression of scapula

sternocleidomastoid

turns head, or flexes neck if used bilaterally

superior oblique

turns eye inferiorly and laterally

inferior oblique

turns eye superiorly and laterally

suprahyoid muscles

elevates the hyoid bone and moves the floor of the mouth

tongue muscles

moves intrinsic and extrinsic muscles of the tongue

extraocular muscles

moves eyes

pharyngeal muscles

aids in swallowing

laryngeal muscles

moves cartilages connected to the vocal cords

pectoralis minor

depression of scapula

levator scapulae

elevation of scapula

serratus anterior

protraction of scapula

rhomboids (major & minor)

retraction of scapula

anterior deltoid

flexion of glenohumeral joint

middle deltoid

abduction of glenohumeral joint

posterior deltoid

extension of of glenohumeral joint

latissimus dorsi

extension, adduction, and internal rotation of glenohumeral joint

teres major

extension and internal rotation of glenohumeral joint

pectoralis major

adduction of glenohumeral joint

coracobrachialis

adduction of glenohumeral joint

infraspinatus

(rotator cuff muscle) external rotation of glenohumeral joint

supraspinatus

(rotator cuff muscle) abduction of glenohumeral joint

teres minor

(rotator cuff muscle) external rotation of glenohumeral joint

subscapularis

(rotator cuff muscle) internal rotation of glenohumeral joint

biceps brachii

flexion of elbow

brachioradialis

flexion of elbow

brachialis

flexion of elbow

triceps brachii

extension of elbow

anconeus

extension of elbow