Lab#6 Flashcards by Daniel R.

deltoid

ABDUCTS THE ARM

The deltoid is formed of acromial, clavicular and scapular spinal parts. Acromial part (middle fibres) abducts the arm, while the clavicular and scapular spinal parts play a significant role in stabilization, ensuring a steady plane of abduction. Additionally, the clavicular part (anterior fibers) can act as a flexor and internal rotator of the arm, while the scapular spinal part (posterior fibers) can extend and externally rotate the arm.

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latissimus dorsi
“AER”
(superficial muscle of back)

Adducts and extends arm
Rotates arm medially

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pectoralis major
“FAR”
Flexes and adducts arm
Rotates arm medially

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teres major
“AEM”

Adducts, extends and medially rotates arm

2nd picture is posterior view of body

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coracobrachialis
“FA”

Flexes and adducts the arm

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4 muscles that move the arm of the shoulder, collectively called

rotator cuff
(teres minor, subscapularis, supraspinatus, infraspinatus

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teres minor

Lateral rotation at shoulder

2nd picture is posterior view of body

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subscapularis

Medial rotation at shoulder

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supraspinatus

Abduction at shoulder

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infraspinatus

lateral rotation at shoulder

2nd picture is posterior view of body

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brachialis

flexes the forearm

*deep to the biceps brachii, can see the posterior portion of the brachialis emerge from beneath biceps brachii

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brachioradialis

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biceps brachii

Flexes forearm
Shoulder supination

*almost completely covers the brachialis

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triceps brachii

Extends the forearm

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pronator teres

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supinator

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palmaris longus

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flexor carpi ulnaris

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flexor carpi radialis

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flexor digitorum superficialis

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extensor digitorum

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extensor carpi ulnaris

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psoas major

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ilacus

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pectineus

gluteus maximus

gluteus medius

tensor fascia latae

gracilis

adductor magnus

adductor longus

sartorius

piriformis

quadriceps - consisting of 4 separate muscles (rectus femoris, vastus medialis, vastus lateralis, vastus intermedius)

rectus femoris

vastus medialis

vastus lateralis

vastus intermedius

hamstrings - made up of 3 muscles (semimembranosus, semitendinosus, biceps femoris)

tibialis anterior

tibialis posterior

gastrocnemius

soleus

fibulas brevis

fibulas longus

iliotibial band or IT band

calcaneal tendon

deltoid (function)

abducts the arm

latissimus dorsi (function)

adducts and extends arm, rotates arm medially “AEM”

pectorals major (function)

flexes and adducts arm, rotates arm medially

teres major (function)

adducts, extends and medially rotates arm

coracobrachialis

flexes and adducts the arm

teres minor

lateral rotation at shoulder

subscapularis

medial rotation at shoulder

supraspinatus

abduction at shoulder

infraspinatus

lateral rotation at shoulder

brachialis

flexes the forearm

brachioradialis

flexes the forearm

biceps brachii

flexes forearm, shoulder supination

triceps brachii

extends the forearm

pronator teres

pronates forearm

supinator

supinates forearm

palmaris longus

flexes hand

flexor carpi ulnaris

flexes and adducts hand

flexor carpi radialis

flexes and abducts hand

flexor digitorum superficialis

flexes fingers and hand

extensor digitorum

extends fingers and hand

extensor carpi ulnaris

extends and adducts hand

psoas major

flexes the thigh, laterally rotates hip

iliacus

flexes the thigh

gluteus maximus

extends and laterally rotates thigh

pectineus

adducts, flexes and medially rotates thigh “Fam”

gluteus medius

abducts and medially rotates thigh “medius” think medial for “medial rotation of thigh”

tensor fasciae latae

abducts thigh, flexes and medially rotates thigh “Fam” again but ABDUCTS

gracilis

flexion at knee, adducts and medially rotates thigh “Fam” again but two different body parts - flexing at KNEE Also, *ADDUCTION

adductor magnus

adducts and medially rotates thigh

adductor longus

adducts, flexes and medially rotates thigh

sartorius

flexes and laterally rotates hip, flexion at knee

piriformis

abducts and laterally rotates thigh

rectus femoris

extends the leg, flexes the thigh

vastus medialis

extends the leg

vastus lateralis

extends the leg

vastus intermedius

extends the leg

semimembranosus

extends and laterally rotates hip, flexion at knee

semitendinosus

extends and laterally rotates hip, flexion at knee

biceps femoris

extends and laterally rotates hip, flexion at knee

tibialis anterior

dorsiflexion and inversion of foot

tibialis posterior

inversion and adduction of foot, plantar flexion of foot

gastrocnemius

plantar flexion of foot, inversion of foot

soleus

plantar flexion of foot

fibularis longus

plantar flexion and eversion of foot

fibularis brevis

plantar flexion and eversion of foot