Anatomy exam 3

What cranial nerve controls the mastication muscles

V3

Name the muscles of mastication

Masseter, temporalis, medial and lateral pterygoid

All facial expression muscles except one are run by what cranial nerve

VII

What cranial nerve does levator palpebrae superioris have

III

What does the lateral pterygoid do

depress jaw

The medial pterygoid, masseter, and temporalis all do what action

elevate jaw

action of orbiularis oculi

Close eyes

what motion does the orbicularis oris do

kissing

action of the platysma

tenses skin of neck, depresses mandible

action of the mentalis

protrude lower lip

action of zygomaticus major

elevate lip up and laterally

action of zygomaticus minor

elevate upper lip

action of levator labii superioris

elevates upper lip

action of risorius

move lips laterally

action of levator anguli oris

elevates corner of mouth

action of depressor anguli oris

depress corner of mouth

action of labii inferioris

depress lower lip

action of frontalis

raises eyebrows

the masseter and pterygoids can do what to the mandible

protract, move side to side

the masseter and temporalis can do what to the mandible

retract, move side to side

insertion of the masseter

mandible

action of buccinator

compresses cheek

action of procerus

wrinkles nose

What muscle of the eye is SO4 and whats its innervation

Superior oblique, IV

What muscle of the eye is LR6 and whats its innvervation

Lateral rectus, VI

Except for LR6 and SO4, what innervates the eye muscles

III

action of superior rectus

move eye up

action of inferior rectus

move eye down

action of superior oblique

move eye down and laterally

action of inferior oblique

move eye up and laterally

what eye muscle goes through the trochlea

superior oblique

action of digastric

depress jaw

action of omohyoid

depress hyoid and larynx

origin of SCM

sternum, clavicle

insertion of SCM

mastoid process

innervation of SCM and trapezius (spinal acessory nerves)

XI

when your SCM contracts/flexes bilaterally your head

flex

when your SCM contracts/flexes unilaterally your head

turns the opposite way

action of the trapezius

REEAD

origin of latissimus dorsi

thoracolumbar fascia, iliac crest

insertion of latissimus dorsi

Floor of intertubercular groove of humerus

innvervation of latissimus dorsi

thoracodorsal nerve

insertion of levator scapulae

superiomedial border of scapula

innervation of levator scapulae and rhomboid muscles

dorsal scapular nerve

action of latissimus dorsi

ear

action of the rhomboids

restract shoulders

origin of rhomboids

spinous process

insertion of rhomboids

vertebral border of scapula

action of levator scapulae

elevates scapula

insertion of serratus anterior

anterior vertebral border of scapula

innervation of serratus anterior

long thoracic nerve

action of serratus anterior

protraction, abduction

Action of Iliocostalis Lumborum

extends vertebral column, depresses ribs

action of longissimus thoracis

extension and lateral flexion of vertebral column

action of spinalis thoracis

extends vertebral column

action of quadratus lumborum

laterally flex vertebral column

action of longus capitis and longus colli

rotate or flex neck

action of scalenes

elevate ribs, flex neck

action of external intercostals

elevate ribs

action of internal intercostals

depress ribs

action of serratus posterior superior

elevate ribs and enlarge

action of serratus posterior inferior

depress ribs and shrink

action of external oblique

rotate trunk too opposite side

action of internal oblique

rotate trunk to same side

action of rectus abdominis

flex spine

action of transversus abdominis

compresses abdomen

what divides rectus abdominis (Abs ) transversely

tendinous inscriptions

what divides rectus abdominis (abs) laterally

linea alba

function of the perineum and pelvic diaphragm

SFC

the urogenital triangle and anal triangle of the perineum are seperated by what

superficial transverse perineal muscle

What are the subscapular muscles responsible for

SMAA

What is a spurt muscle?

Primary action is Moving, insertion close to the joint

What is a shunt muscle?

stabilizer muscle, insertion far from joint

Origin of pec minor

ribs 3-5

insertion of pec minor

coracoid process

Action of pec minor

protraction, depression

Action of deltoid

abducts arm

origin of pectoralis major

clavicle and sternum

Insertion of pectoralis major

Lateral Intertubercular sulcus

action of pectoralis major

Adducts and internal rotation of arm

Innervation of pec major and minor

pectoral nerve

Triceps long head, brachioradialis, extensor carpi ulnaris are innervated by what

Radial nerve

Biceps brachii, coracobrachialis, brachialis are innervated by what

Musculocutaneous nerve

Action of coracobrachialis

adduct, flex

Origin of biceps brachii short head

coracoid process

Orgin of biceps brachii long head

supraglenoid tubercle

Insertion of biceps brachii long and short head

radial tuberosity

Innervation of biceps brachii long and short

musculocutaneous nerve

Action of biceps brachii long and short

Flexes elbow and shoulder, supinates antebrachium

Insertion of teres major muscle

Medial part of intertubercular groove

origin of teres major muscle

Inferior angle of scapula

Action of teres major and subscapularis

internally rotate arm

Medially is the same as

Internally

origin of subscapularis

subscapular fossa

insertion of subscapularis

lesser tubercle

Innervation of subscapularis

subscapular nerve

Origin of supraspinatus

supraspinous fossa

insertion of supraspinatus, infraspinatus, and teres minor

Greater tubercle

Origin of infraspinatous

infraspinous fossa

action of supraspinatus

abducts arm