quiz 6 Flashcards
Pectoralis Major
Origin: medial half of clavicle
Insertion: Lateral lip of intertubercular groove on humerus
Action: Flexion, medial rotation, and adduction of the arm
Pectoralis Minor
Origin: External surfaces of ribs 3-5
Insertion: Coracoid process of scapula
Action: Depression and inferior rotation of scapula.
Serratus Anterior
O:External surfaces of ribs 1-8
I: Medial border of scapula
A:Protraction and superior rotation fo scapula. holds scapula against thoracic wall
Latissimus Dorsi
O: Spinous process of vertebrae T6-T12, thoracolumbar fascia, iliac crest, ineror three ribs
I: Intertubercular grove of humerus
A: Extension, adduction, and medial rotation of the arm
Trapezius
O: Posterior surface of occipital bone, ligamentum nuchae, spinous process of thoracic vertebrae
I:Lateral third fo clavicle, acrmonion process, spine of scapula
A: Superior fibers- elevate scapulae
Middle fibers- abduction of arm
Inferior fibers- depress scapula
Deltoid
O:lateral third of clavicle, acromonion process, spine of scapula
I:Deltoid tuberosity of the humerus
A: Anterior fibers- medial rotation and flexion of the arm
middle fibers- abduction of arm
Posterior fibers- lateral rotation and extension of arm.
Rhombiod minor
O:ligamentum nuchae, spinous process of vertebrae c7 and t1
I:Medial border of scapula
A:Elevates sapula, acts with pectoralis minor to inferiorly rotate scapula
Teres Major
O:scapula near inferior angle
I:medial border of scapula
A:Extension, adduction, and medial rtation or arm
Supraspinatus
O: Supraspinous fossa of scapula
I: Greater tubercule of humerus
A: Abduction of arm
Infraspinatus
O: Infraspinous fossa of scapula
I: Greater tubercule of humerus
A: Lateral rotation of arm
Teres Minor
O: Lateral border of scapula
I: greater tubercle of humerus
A: lateral rotation of the arm
Subscapularis
O: Subscapular fossa of the scapula
I: lesser tubercule of humerus
A: adduction and medial rotation of the arm
Biceps Brachii
O: Long head- superior margin of glenoid fossa of scapula
short head- coracoid process of scapula
I: Radial tuberosity of radius, fascia of medial forearm via bicipital aponeurosis
A: flexion and supination of forearm, flexion of arm
Brahcialis
O: Anterior surface of humerus
I: Coroniod process f ulna
A: Flexion of forearm
Coracobrachialis
O: coracoid process of scapula
I: Medial surface of humerus
A: Flexion and adduction of the arm
Triceps Brachii
O: Long head- inferior margin of glenoid fossa of scapula
lateral head- posterior surface of humerus
medial head- posterior surface of humerus,inferior to origin of lateral head
I: Olecranon process of ulna
A: Extension of the forearm, long head extends and adducts the arm
Pronator Teres
O: Medial Epicondyle of humerus, coranoid process of ulna
I: Lateral surface of radius
A: Pronation and flexion of the forearm
Flexor Carpi Radialis
O: Medial epicondyle of humerus
I: base of metacarpal of the second digit
A: Flexion and abduction of the wrist
Palmaris Longus
O: Medial epicondyle of humerus
I: Flexor retinaculum, palmar aponeurosis
A: Flexion of wrist
Flexor Carpi Ulnaris
O: Medial epicondyle of humerus
I: Medial carpal bones, metacarpal fifth digit
A: flexion and adduction of the wrist
Flexor Pollicis Longus
O: Anterior surface of radius, interosseous membrane
I: Distal Phalanx of thumb
A: Flexion of wrist and thumb
Brachioradialis
O: Lateral supracondylar ridge of humerus
I: Lateral surface of distal radius
A: Flexion of forearm
Extensor Carpi Radialis Longus
O: Lateral supracondylar ridge of humerus
I: Metacarpal of the second digit
A: Extension and abduction of the wrist
Extensor Carpi Radialis Brevis
O: Lateral epicondyle of humerus
I: Metacarpal of third digit
A: Etension and abduction of the wrist
Extensor Digitorum
O: Lateral epicondyle or humerus
I: Extensor expansion of medial four digits
A: Extension of wrist and fingers
Extensor Carpi Ulnaris
O: Lateral epicondyle of humerus, posterior surface of the ulna
I: metacarpal of the fifth digit
A: Extension and adduction of the wrist
Aconeus
O: Lateral epicondyle of humerus
I: Olecranon process of ulna
A: very weak extension of forearm
Supinator
O: Lateral epicondyle of humerus, proximal ulna
I: Posterior, lateral, and anterior surfaces of proximal radius
A: supination of the forearm
Abductor Pollicis Longus
O: Posterior surfaces of radius and ulna, interosseous membrane
I: Metacarpal of thumb
A: Abducts and extends thumb
Gluteus Maximus
O: Lateral surface of ilium, dorsal surface of sacrum and coccyx
I: Iliotibial tract, gluteal tuberosity of femur
A: Extension and lateral rotation of thigh, powerful extensor for climbing and running, stabilizes pelvis and thigh while standing erect
Gluteus medius
O: Lateral surface of ilium
I: Greater trochanter of femur, lateral surface
A: Abduction and medial rotation of thigh, steadies the pelvis during walking
Gluteus minimum
O: Lateral surface of ilium, inferior to origin of gluteus
I: Greater trochanter of femur, lateral surface
A: abduction and medial rotation of thigh, steadies the pelvis during walking
Piriformis
O: Anterior surface of sacrum
I: Greater trochanter of femur, superior surface
A: Abducts thigh
Iliacus
O: Iliac fossa, anterior surface of sacrum
I: Greater trochanter of femur
A: Flexion of the thigh
Psoas Major
O: Bodies of vertebrae t12-l5 nerves
I: Lesser trochanter of femur
A: Flexion of thigh
Sartorius
O: Anterior surface iliac spine of ilium
I: Medial surface of tibia near the knee joint
A: Flexion, abduction, and lateral rotation of thigh, flexion of leg
Rectus femoris
O: Anterior inferior iliac spine of ilium
I: Patella by the quadriceps tendon and tibial tuberosity by the patellar ligament
A: Extension of leg, flexion of thigh
Vastus Lateralis
O: Greater trochanter and lateral lip of linea aspera of femur
I: patella by the quadriceps tendon and tibial tuberosity by the patellar ligament
A: Extension of leg
Vastus Medialis
O: Interochanteri line and medial lip of linea aspera
I: Patella by the quadriceps tendon and tibial tuberosity by the patellar ligament
A: Extension of leg
Tensor fasciae latae
O: Anterior superior iliac spine of ilium
I: iliotibial tract
A: Flexes, abducts, and medially rotates thigh , steadies trunk on thigh while standing
Pectineus
O: Superior ramus of pubic bone
I: Pectineal line of femur
A: Adduction and flexion of thigh
Adductor longus
O: Body of pubic bone
I: linear apera of femur
A: adduction and flexin of thigh
Gracilis
O: Body and inferior ramus of pubic bone
I: Medial surface of tibia, near the knee joint
A: Adduction of thigh, flexion and medial rotation of leg
Semitendinosus
O: Ischial tuberosity of ischium
I: Medial surface of tibia near the knee joint
A: Extension of thigh, flexion of leg
Semimenbranosus
O: Ischial tuberosity of ischium
I: Posterior surface of medial condyle of tibia
A: Extension of thigh, flexion of leg
Tibialis Anterior
O: Lateral condyle and lateral surface of tibia, onterosseus
I: medial cuneiform bone and forst metatarsal
A: Dorsiflexion and inversion of the foot
Extensor Digitorum Longus
O: Lateral condyle of tibia, medial surface of fibula, interosseous membrane
I: Middle and distal phalanges of digits 2-5
A: Dorsiflexion of the foot, extension of the toes
Peroneus Longus
O: Head and lateral surface of fibula
I: first metatarsal and medial cuneiform
A: eversion of the foot
Peroneus Brevis
O: Lateral surface of fibula
I: fifth metatarsal
A: Eversion of the foot
Gastrocnemius
O: Lateral head- lateral condyle of femur
medial head- popliteal surface of femur, just superior to medial condyle
I: calaneus by the calcaneal (achilles) tendon
A: Plantar flexion of foot, flexion of the leg
Soleus
O: Head of fibula, posterior surface of fibula, posterior surface of fibula, medial aspect of tibia
I: Calcaneus by the calcneal (achilles) tendon
A: Plantar flexion of foot
