Lab 5 - myology

Facial expression muscle, raises eyebrows, CN VII (Facial)

Frontalis

Frontalis

Closes the eyelids, CN VII (Facial)

Orbicularis oculi

Orbicularis Oculi

Raises corners of the lips, CN VII(Facial)

Zygomaticus major

Zygomaticus major

Compresses the cheeks, CN VII(Facial)

Buccinator

Buccinator

Tenses the scalp, CN VII (Facial)

Occipitalis

Occipitalis

tenses neck and depresses mandible

platysma

Platysma

Purses the lips, helps kiss. CN VII (Facial)

Orbicularis Oris

Orbicularis Oris

Lowers corners of the lips, CN VII (facial)

Depressor anguli oris

Elevates the mandible, Large muscle on lateral surface of jaw. CN V (trigeminal)

Masseter

Elevates the mandible, fan shaped. CN V (trigeminal)

Temporalis

Elevates jaw and moves jaw medially

Medial pterygoid

Protrudes lower jaw

lateral pterygoid

Superficial muscle, Elevates, Retracts, and depresses scapula. CN 11 (Spinal accessory nerve)

Trapezius

Turns head, bilaterally flexes neck; CN 11 (Spinal accessory)

Sternocleidomastoid

Turns eye medially. CN 3 (Oculomotor)

Medial Rectus

Turns eye laterally. CN 6 (Abducens)

lateral rectus

turns eye superiorly. CN 3 (Oculomotor)

superior rectus

turns eye inferiorly; CN 3 (Oculomotor)

inferior rectus

Turns eye inferiorly and laterally. CN IV (Trochlear)

Superior oblique

Turns eye superiorly and laterally. CN 3 (Oculomotor)

Inferior oblique

Elevates the hyoid bone and moves the floor the mouth. CN5, CN7

Suprahyoid Muscles

Moves intrinsic and extrinsic muscles of the tongue CN12

Tongue muscles

moves eyes CN3 (oculomotor),CN4(trochlear),CN6(abducens)

extraocular muscles

Aids in swallowing, CN10 (vagus)

pharyngeal muscles

moves cartilages connected to the vocal cords, CN 10(Vagus)

laryngeal muscles

Aids in depression of scapula

Pectoralis Minor

Aids in elevation of scapula

Levator Scapulae

Protracts scapula. “boxers muscle”

Serratus Anterior

Retraction of Scapula

Rhomboids

Flexion of glenohumeral joint. .

Anterior Deltoid

Abduction of Glenohumeral Joint

Middle Deltoid

Extension of Glenhumeral Joint

Posterior Deltoid

Extensions, Adduction, & Internal Rotation fo Glenohumeral Joint

Latissimus Dorsi

Extention and internal rotation of GH Joint. smaller.

Teres Major

Adduction of Glenohumeral joint. Covers breast.

Pectoralis Major

adduction of GH joint. small, along arm.

Coracobrachialis

Along Infraspinous fossa, External rotation of glenohumeral joint.

Infraspinatus

Abduction of GH Joint. Along the Supraspinous fossa.

Supraspinatus

External rotation of GH joint Small, from humeral head to lover infraspinous fossa.

Teres Minor

Internal rotation of GH Joint. along the Subscapular fossa

Subscapularis

Flexion of elbow

biceps brachii // Brachialis

Extension of Elbow

Triceps Brachii // Anconeus

Pronator Teres, Pronator Quadratus

pronation of hand

Flexor Carpi Radialis, Palmaris Longus, Flexor Carpi Ulnaris

Flexors of Wrist

Flexor Digitorum Superficilais, Flexor Digitorum Profundus, Flexor Pollicis Longus

Flexors of Digits

Tenses the skin of the hand and attatches to the Palmar aponeurosis

Palmaris Longus

Supinator

Supinators of hand

Extensor Carpi Ulnaris, Extensor Carpi Radialis Longus, Extensor Carpi Radialis Brevis

Extensors of Wrist

Extensor Digitorum, Extensor Digiti Minimi, Extensor Indicis, Extensor Pollicis longus, Extensor Pollicis Brevis

Extensors of digits

Abduction of Thumb

Abductor Pollicis Longus