Muscular system

Trapezius

Trapezius

superficial, upper back, makes upside-down triangle; origin is occipital bone + vertebrae and inserts on scapula and clavicle

Latissimus dorsi

superficial, mid and low back; muscle inserts on humerus

Levator scapulae

narrow muscle, runs down neck and towards scapula; deep to trapezius

Rhomboid major

bigger and inferior; run between scapula and vertebrae; deep to trapezius

Rhomboid minor

smaller and inferior; run between vertebrae and scapula; deep to trapezius

Sacrospinalus (erector spinae)

deep to the deep muscles, run up and down covering most of back

Deltoid

superior muscle on shoulder

Rotator cuff muscles

supraspinatus, infraspinatus, teres minor, subscapularis

Supraspinatus

Infraspinatus

Teres minor

Teres major

not a part of rotator cuff; below teres minor

Biceps brachii

superficial muscle on front of arm; 2 heads

Triceps brachii

superficial on back of arm; 3 heads

Pectoralis major

big, superficial, muscle on chest

Pectoralis minor

smaller, deep to the pec. major

Serratus anterior

fan of them, attached to ribs on lateral sides

External intercostals

more lateral than internal, hands (fibers) going IN pocket

Internal intercostals

more medial than external, fibers going opposite way

Sternocleidomastoid

deep to platysma, narrow band running up on each side of neck

Sternohyoid

deep to platysma, 2 narrow muscles running up to head, inverted V under chin

Masseter

cheek muscle

Orbicularis oculi

circular muscle around eye, winking muscle

Orbicularis oris

circular muscle around mouth

Platysma

covers whole neck, superficial

Digastric

deep to platysma, two-bellies: one under chin, one running from chin to ear

Temporalis

side of head where temporalis bone is

Frontalis

where forehead is

Occipitalis

back of head, where occipital bone is

Galea aponeurotica

connects muscle to muscle

Brachioradialis

Big muscle on lateral side of forearm

Pronator teres

in front of elbow, short and angled

Flexor carpi radialis

next to brachioradialis, on top of radius, tendon going to carpal region

Palmaris longus

next to flexor carpi radialis, middle of forearm, tendon goes to palm

Flexor carpi ulnaris

next to palmaris longus, on pinky side

Extensor carpi radialis longus

long tendon, next to extensor carpi radialis brevis, medial

Extensor carpi radialis brevis

short tendon, next to extensor capri radialis longus, lateral

Extensor digitorum

next to extensor carpi radialis brevis, middle of forearm, tendons go to fingers

Extensor carpi ulnaris

on pinky side

External oblique

lateral sides, fibers running in pocket

Rectus abdominis

fibers run up and down, medial

Internal oblique

deep to external oblique, lateral, fibers running up

Transverse abdominis

deep to internal oblique, fibers run horizontally

Linea alba

skinny line, runs from xiphoid process to symphysis pubis

Psoas major

medial, narrow bands, lumbar vertebrae to femur

Iliacus

sits on ilium, lateral

Sartorius

narrow band, front of thigh, angled and superficial

Tensor fasciae latae

short, lateral

Gluteus maximus

superficial, butt muscle

Gluteus medius

deep and superior to maximus

Piriformis

inferior to medius, deep to maximus, see it medial to psoas major

Quadriceps femoris group consist of:

rectus femoris, vastus medialis, vastus lateralis, vastus intermedius

Rectus femoris

front of thigh, medial, superficial

Vastus medialis

on medial side of rectus femoris

Vastus lateralis

on lateral side of rectus femoris

Vastus intermedius

deep to rectus femoris, white CT on in-class model

Adductor longus

medial on thigh, in front of gracilis

Adductor magnus

medial on thigh, behind gracilis

Gracilis

medial part of thigh, narrow band

Semitendinosus

next to biceps femoris, on top of membranosus, skinnier

Semimembranosus

deep and medial to semitendinosus, thicker

Biceps femoris

lateral side of hamstrings

Tibialis anterior

lateral to tibia

Extensor digitorum longus

lateral side of tibialis anterior

Fibularis longus

next to fibula

Gastrocnemius

big, superficial muscle of back leg

Soleus

deep to gastrocnemius

Flexor digitorum longus