Lab#6 Flashcards
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.
latissimus dorsi
“AER”
(superficial muscle of back)
Adducts and extends arm
Rotates arm medially
pectoralis major
“FAR”
Flexes and adducts arm
Rotates arm medially
teres major
“AEM”
Adducts, extends and medially rotates arm
2nd picture is posterior view of body
coracobrachialis
“FA”
Flexes and adducts the arm
4 muscles that move the arm of the shoulder, collectively called
rotator cuff
(teres minor, subscapularis, supraspinatus, infraspinatus
teres minor
Lateral rotation at shoulder
2nd picture is posterior view of body
subscapularis
Medial rotation at shoulder
supraspinatus
Abduction at shoulder
infraspinatus
lateral rotation at shoulder
2nd picture is posterior view of body
brachialis
flexes the forearm
*deep to the biceps brachii, can see the posterior portion of the brachialis emerge from beneath biceps brachii
brachioradialis
brachioradialis
biceps brachii
Flexes forearm
Shoulder supination
*almost completely covers the brachialis
triceps brachii
Extends the forearm
pronator teres
pronator teres
supinator
palmaris longus
palmaris longus
flexor carpi ulnaris
flexor carpi ulnaris
flexor carpi radialis
flexor carpi radialis
flexor digitorum superficialis
extensor digitorum
extensor carpi ulnaris
psoas major
ilacus
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