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Lab Practical 2
muscles (insertion, origin, action)
93
Anatomy
Undergraduate 2
11/06/2013

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Term
clavicle, sternum, ribs 3-4
humerus
Definition
pectoralis major
Term
pectoralis major
Definition
action: prime mover of arm flexion; adducts, medially rotates arm
Term
serratus anterior
Definition
action: rib elevation protracts and rotates scapula
Term
ribs 1-8
scapula
Definition
serratus anterior
Term
pecoralis minor
Definition
action: with ribs fixed, draws scapula forward and inferiorly
Term
ribs 3-5
coracoid process of scapula
Definition
pectoralis minor
Term
deltoid
Definition
action: prime mover of arm abduction; when only specific fivers are active, can aid in flexion, extension, and rotation of humerus
Term
clavicle; acromion and spine of scapula
deltoid tuberosity of humerus
Definition
deltoid
Term
external intercostals
Definition
action: pulls ribs towards one another to elevate rib cage; aids in inspiration
Term
inferior border of rib above
superior border of rib below
Definition
external intercostals
Term
superior border of rib below
inferior border of rib above
Definition
internal intercostals
Term
internal intercostals
Definition
action: aids in forced expiration
Term
rectus abdominis
Definition
action: flexes and rotates vertebral column; abdominal compression
Term
pubic crest and symphysis
xiphoid process and costal cartilage of ribs
Definition
rectus abdominus
Term
external oblique
Definition
action: also aids in muscles of back in trunk rotaion and lateral flexion
Term
last eight ribs
linea alba, pubic crest, and iliac crest
Definition
external oblique
Term
internal oblique
Definition
action: as for external oblique
Term
lumbar fascia, iliac crest, and inguinal ligament
linea alba, pubic crest and costal cartilages of last 3 ribs
Definition
internal obliques
Term
transversus abdominus
Definition
action: compress abdominal contents
Term
inguinal ligament, iliac crest, cartilages of last 5-6 ribs
linea alba and pubic crest
Definition
transversus abdominis
Term
trapezius
Definition
action: extends head; superior fibers elevate scapula
(shrugging)
Term
occipital bone;vertebrae
humerus
Definition
trapezius
Term
latissimus dorsi
Definition
action: prime mover of arm extension; adducts and medially rotates arm
Term
lower vertebrae, last 3-4 ribs, and iliac crest
humerus
Definition
latissimus dorsi
Term
infraspinatus
Definition
action: lateral rotation of humerus
Term
infraspinaous fossa of scapula
greater tubercle of humerus
Definition
infraspinatus
Term
teres minor
Definition
action: lateral rotation of humerus
Term
teres major
Definition
action: extends and adducts humerus
Term
subscapularis
Definition
action: adduction and flexion of humerus
Term
scapula
greater tubercle of humerus
Definition
teres minor
Term
scapula
humerus
Definition
teres major
Term
scapula
humerus
Definition
subscapularis
Term
supraspinatus
Definition
action: abduction of humerus
Term
supraspinous fossa of scapula
greater tubercle of humerus
Definition
supraspinatus
Term
levator scapulae
Definition
action: elevates and adducts scapula
Term
transverse process of C1-C4
medial border of scapula
Definition
levitator scapulae
Term
triceps brachii
Definition
action: forearm extensor
Term
long, medial, and lateral head of humerus
olecranon process of ulna
Definition
triceps brachii
Term
coracoid process and glendoid fossa of scapula
radial tuberostity
Definition
biceps brachii
Term
humerus
styloid process of radius
Definition
brachioradialis
Term
humerus
coronoid process of ulna
Definition
brachialis
Term
coracoid process of scapula
humerus
Definition
coracobrachialis
Term
medial epicondyle of humerus and coronoid process of ulna
midshaft of radius
Definition
pronator teres
Term
lateral epicondyle of humerus; ulna
proximal end of radius
Definition
supinator
Term
iliacus-ilium sacrum; psoas major-lumbar vertabrae
lessser trochanter of femur
Definition
iliopsas and psoas major
Term
anterior superior iliac spine
proximal tibia
Definition
sartorius
Term
magnus-ishium and pubis longus-pubic symphysis; brevis-pubis
insertion: femur
Definition
abductors magnus, longus, and brevis
Term
pubis
lesser trochanter of femur
Definition
pectineus
Term
pubis
tibia
Definition
gracilis
Term
anterior inferior iliac spine and acetabulum
tibial tuberosity and patella
Definition
rectus femoris
Term
greater trochanter of femur
tibial tuberosity and patella
Definition
vastus lateralis
Term
femur
tibial tuberosity and patella
Definition
vastus medialis and intermedius
Term
iliac and iliac spine
iliotibial tract
Definition
tensor fasciae latae
Term
ilium, sacrum, and coccyx
femur and iliotibial tract
Definition
gluteus maximus
Term
ilium
greater trochanter of femur
Definition
gluteus medius and minimus
Term
sacrum
femur
Definition
piriformis
Term
ischial tuberosity; femur
fibula
Definition
biceps femoris
Term
ischial tuberosity
tibia and fibula
Definition
semitendinosus
Term
ischial tuberosity
tibia and femur
Definition
semimembranosus
Term
biceps brachii
Definition
action: flexion and supination of forearm
Term
brachioradialis
brachialis
Definition
action: forearm flexion
Term
coracobrachialis
Definition
action: flexion and adduction of humerus
Term
pronator teres
Definition
action: pronate forearm
Term
supinator
Definition
action: supinate forearm
Term
iliopsas
Definition
action: flex thigh; lateral flexion of vertebral column
Term
sartorius
Definition
action: flexes thigh; flexes knee
Term
adductors-magnus, longus, brevis
Definition
action: adduct and medially rotate and flex thigh
Term
pectineus
gracilis
Definition
action: adducts thigh
Term
rectus femoris
Definition
action: extends knee and flexes thigh at hip
Term
vastus lateralis, medialis, and intermedius
Definition
action: extends knee
Term
tensor fasciae latae
Definition
action: flexes, abducts and medially rotates thigh
Term
gluteus maximus
Definition
action: thigh extensor; laterally rotates thigh
Term
gluteus medius
gluteus minimus
Definition
action: abducts and medially rotates thigh
Term
piriformis
Definition
action: lateral thigh rotation
Term
biceps femoris
semiteninosus
semimembranosus
Definition
action: extends thigh; flexes knee
Term
head of fibula
tarsal, metatarsal
Definition
fibularis longus
Term
lateral condyle of tibia
tarsal, metatarsal
Definition
tibialis anterior
Term
lateral condyle of tibia; proximal fibula
middle and distal phalanges of toes
Definition
extensor digitorum longus
Term
shaft of fibula and interosseous membrane
tendon inserts on distal phalanx of great toe
Definition
extensor hallus longus
Term
medial and lateral condyles of femur
calcaneus
Definition
gastrocnemius
Term
proximal portion of tibia and fibula
calcaneus
Definition
soleus
Term
superior portion of tibia and fibula
tarsals and metatarsals
Definition
tibialis posterior
Term
posterior surface of tibia
distal phalanges of toes
Definition
flexor digitorum longus
Term
middle portion of fibula shaft; interosseous membrane
tendon runs under foot to distal phalanx of great toe
Definition
flexor hallucis longus
Term
fibularis longus
Definition
action: plantar flexes foot
Term
tibialis anterior
Definition
action: prime mover of dorsiflexion; inverts foot; toe extension
Term
extensor digitorum longus
Definition
action: prime mover of toe extension; dorsiflexes foot, foot eversion
Term
extensor hallucis longus
Definition
action: extends great toe; dorsiflexes foot
Term
gastrocnemius
Definition
action: plantar flexes foot; flexes knee
Term
soleus
Definition
action: plantar flexion
Term
tibialis posterior
Definition
action: prime mover of foot inversion; plantar flexes foot
Term
flexor digitoum longus
Definition
action: flexes toes; plantar flexes and inverts foot
Term
flexor hallucis longus
Definition
action: flexes great toe; plantar flexes and inverts foot the "push off muscle" during walking
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