Chapter 11 - Muscle Anatomy

What is this -

Sternocleidomastoid - Lateral neck flexion, neck extension

What is highlighted -

Splenius capitis - Head/neck extension

What is highlighted

Trapezius - Retraction, elevation, depression of scapula

What is highlighted

Rhomboid (minor on top, major on bottom) - Scaupla retraction

What is highlighted

Levator Scapulae - elevates the scapula

What are the three muscles of the erector spinae

Semispinalis, longissimus, spinalis

Interspinales are…

between spinous process

Interspinales are…

between transverse process

What is highlighed

Rectus abdominis - flexes trunk/spine

Highlighted in blue

External obliques

Highlighted in green

Internal obliques

Function

Laterally flex the trunk - EO fibers run medially inferiorly

What is highlighted

Transverse abdominis - compresses abdomen

Muscle in the lungs

Diaphragm - pushes organs inferiorly

What is this

Intercostals

3 types of intercostals

External, Internal, Innermost

What is highlighted

Pectoralis major - arm flexion, medial rotation, adduction

What is highkighted

Latissimus dorsi - arm extension, medial rotation, adduction

What is highlighted

Pectoralis minor - depresses scapula

What is highlighted?

Deltoid - arm abduction

What is this? And what side is this on?

Serratus anterior - depresses and fixator for scapula

What happens if serratus anterior is damaged?

Winged scapula syndrome - damage of nerves (mastectomy)

Memorize these

Memorize these

What is this? 

Subscapularis - medial arm rotator - GH joint stablizer

What is this?

Supraspinatus - arm abduction

What is this?

Infraspinatus

What is this?

Teres minor - arm extension, medial rotation, adduction - synergist of lats

SLAP tear

Superior labral tear from anterior to posterior - affects tendon of biceps brachii

What is this

Biceps brachii - forearm flexor (has two heads)

What is this?

Brachioradialis - forearm flexor synergist

What is this

Brachialis - forearm flexor synergist

What is this?

Triceps brachii - forearm extender (long, lateral, medial)

What is this?

Pronator teres - forearm pronator

Green

Flexor carpi ulnaris - wrist flexor

Yellow

Flexor carpi radialis - wrist flexor

Function

Flexes joint between proximal and middle phalanges

What is this?

Extensor digitorum - Finger extender 2-5

What is this

Extensor digiti minimi - 5th digit extender

What is this?

Extensor carpi ulnaris - wrist extender

What is this

Extensor carpi radialis longus/brevis - wrist extensor

Function of extensor indicis 

Extends digit 2

Supinator

Supinates the forearm and wrist

Opponens pollicis

Allows opposition of the thumb.

What is this

Iliopsoas - flexes hip

What is this?

Sartroius - hip flexion, abduction, lateral rotation, knee flexion

What is this

Gluteus maximus - hip extension and lateral rotation

What is this?

Gluetus minimus (green), and medius (yellow) - hip abduction, medial rotation

What is this?

Piriformis - lateral hip rotation

Sciatica or priformis syndrome

Compression of nerve = pain and function loss

What is this

Quadriceps - flexes hip, extends knee - rectus femoris (top), vastus lateralis (left), medialis (bottom), intermedius

The rectus femoris can

Laterally rotate hip

What is this?

Tensor fascia latae - hip flexion, abduction, medial rotation

What is this?

Biceps femoris -hip extension, knee flexion

What is this?

Semitendinosus - hip extension, knee flexion

What is this

Semimembranosus - hip extension, knee flexion

What is this?

Pectineus - adduction and laterally rotation of hip

What is this?

Adductor longus - adduction and lateral rotation of hip

What is this?

Adductor brevis

What is this?

Adductor magnus

What is this?

Gracilis - hip adduction, knee flexion

Say Grace at Supper Time

Pes Anserine - satorius, gracilis, semitendinosus

What is this?

Ischial tuberosity

What is this?

Fibularis longus/brevis - foot eversion

What is this?

Tibalis anterior - dorsiflexion, foot inversion 

What is this?

Gastrocnemius - knee flexion, plantar fleion

What is this?

Soleus - plantar flexion

Tibalis posterior

Plantar flexion and foot eversion

What is this

Epicranius - raises eyebrows

What is this?

Platsyma - tense skin of neck

What is this?

Orbicularis occuli - closes eyelids

What is this?

Obicularis oris - closes and purses lips

What is this?

Buccinator - compress cheek

What is this? 

Zygomaticus major - smile

What is this?

Depressor anguli oris - depresses mouth

What is this?

Temporalis - close and retract mouth

What is this?

Masseter - close and protract mouth

Diagrastric muscles does what?

Opens your mouth

Sternohyoid, omohyoid, and thyrohyoid are what?

Hyoid muscles - moves hyoid for deglutition