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appendicular muscular system
muscles of upper body. O, I and A
49
Anatomy
Not Applicable
06/03/2010

Additional Anatomy Flashcards

 


 

Cards

Term

 

 

A.Pectoral Girdle

Definition

Designed to increase upper limb mobility

-Dorsal Groups -trapezious -Rhomboids -lavater scapulae

-Ventral Groups -serratus anterior -subclavius -pectoralis minor

Term

 

 

 

Trapezius

Definition

O::Occipital bone and spinous processes of thoracic vertebrae I::clavicle and scapula (acromion process and spine)

A::elevate, retract, depress or rotate scapula

*big muscle on your back(DORSAL pectoral girdle)

Term

 

 

 

Rhomboids

Definition

adducts and performs downward rotation of scapula (pull towards center of back) 

[dorsal pectoral girdle]

Term

 

 

 

Levator Scapulae

Definition

Elevates scapula; shrugging

[dorsal pectoral girdle]

Term

 

 

Serratus Anterior

Definition

protracts(abducts) scapula swinging the shoulder anteriorly and rotates the glenoid cavity moving it superiorly

[ventral pectoral girdle]

Term

 

 

Subclavius

Definition

Depresses and protracts shoulder (clavical-calvius)

[ventral pectoral girdle]

Term

 

Pectoralis Minor

Definition

depresses and protracts shoulder and rotates scapula so glenoid cavity moves inferiorly

[ventral pectoral girdle]

Term

 

 

 

B.Upper Arm

Definition

O::scapula

I::humerous

1)Deltoid    2)supraspinatus   3)teres major    4)subscapularis 5)infraspinatus     6)teres minor   7)coracobrachialis

8)pectoralis major     9)latissimus dorsi

Term

 

 

 

Deltoid

Definition

O::clavicle and acromion process/spine of scapula

I::deltoid tuberosity of humerus

A::abduction of shoulder and flexion or extension and medial or lateral movement of humerus

*rounded shoulder, raises arm forward & sideways, 'put ur shoulder in, put ur shoulder out'

Term

 

 

supraspinatus

Definition

O::supraspinous fossa of scapula

I::greater tubercle of humerus

A::abduction of shoulder

*synergist of deltoid to initiate movement

Term

teres major

Definition

O::inferior angle of scapula

I::intertubercular groove of humerus

A::extension, adduction, and medial rotation of the shoulder

Term

 

 

subscapularis

Definition

O::subscapular fossa

I::lesser tubercle of humerus

A::medial rotation of shoulder

*only muscle that inserts on subscapularis

Term

 

 

infraspinatus

Definition

O::infraspinous fossa

I::greater tubercle of humerus

A::lateral rotation of shoulder

Term

 

 

teres minor

Definition

O::lateral border of scapula;

I::greater tubercle of humerus;

A::lateral rotation of shoulder

Term

 

 

coracobrachialis

Definition

O::coracoid process;

I::medial margin of shaft of humerus;

A::adduction and flexion at shoulder

Term

 

 

 

pectoralis major

Definition

O::cartilage of ribs 2 - 6, body of sternum, and inferior medial portion of clavicle

I::crest of greater tubercle and intertubercular groove of humerus A::flexion, adduction, and medial rotation at shoulder

Term

 

 

 

latissimus dorsi

Definition

O::spinous process of inferior thoracic and all lumbar vertebrae and ribs 8-12

I::intertubercular groove of the humerus

A::extension adduction(scapula together), and medial rotation at shoulder

Term

 

 

 

C.Forearm

Definition

O::scapula/humerous

I::radius/ulna

includes Flexors and Extensors

-basically movement at elbow

Term

 

 

 

Biceps Brachii Flexor

Definition

::Short head - coracoid process of scapula

::Long head - surpglenoid tubercle of scapula

::Insertion radial tuberosity

::Action flexion at elbow and supination (palm forward)

Term

 

 

 

Brachialis flexor

Definition

O::anterior distal surface of the humerus

I::ulnar tuberosity

A::flexion at elbow

Term

 

 

 

Brachioradialis Flexor

Definition

O::lateral epicondyle of humerus

I::lateral aspect of styloid process of radius

A::flexion at elbow

Term

 

 

 

Triceps brachii Extensor Lateral Head

Definition

O::superior lateral margin of humerus

I::olecranon of ulna

A::extension of elbow

Term

 

 

 

Triceps brachii Extensor Long Head

Definition

O::infraglenoid tubercle of scapula

I::olecranon

A::extension of elbow and extension and adduction of shoulder

Term

 

 

 

Triceps brachii Extensor Medial Head

Definition

O::posterior surface of humerus;

I::olecranon;

A::extension of elbow

Term

 

 

 

D. Wrist and Hand Flexor carpi radialis

Definition

O::medial epicondyle of humerus;

I::bases of metacarpal bones;

A::flexion and abduction at wrist

Term

 

 

 

Wrist and Hand flexor carpi ulnaris

Definition

O::medial epicondyle of humerus and olecranon of ulna;

I::carpal bones and metacarpal bones;

A::flexion and adduction at wrist

Term

 

 

 

Wrist and Hand Extensor carpi radialis

Definition

O::lateral aspect of epicondyle and superior region of humerus; I::base of metacarpal bones;

A::extension and abduction of wrist

Term

 

 

 

Wrist and Hand Extensor Carpi Ulnaris

Definition

O::lateral epicondyle of humerus and adjacent ulna

I::metacarpal bones

A::extension and adduction of wrist

Term

 

 

 

Wrist and Hand Pronators

Definition

(medial rotation)

O::medial ulna;

I::lateral radius;

A::pronation

Term

 

 

 

Wrist and Hand Supinator

Definition

(lateral rotation)

O::lateral humerus and ulna

I::anterolateral surface of radius

A::supination

Term

 

 

 

E. Thigh

Definition

-Designed to transfer weight

-this extra bulk limits range of motion

1)gluteal group

2)adductor group

Term

 

 

Gluteal Group

 

Maximus

Definition

O::iliac crest and lateral surface of ilium, sacrum, coccyx, and thoracolumbar fascia;

I::iliotibial tract and gluteal tuberosity of femur;

A::extension(kick back) and lateral rotation at hip, stabilize extended knee

Term

 

 

Gluteal Group

 

Iliotibial Tract

Definition
band of collagenous fibers that extends along the lateral surface of the thigh and inserts at the tibia
Term

 

 

Gluteal Group

 

Medius

Definition

O::anterior iliac crest and lateral surface of the ilium;

I::greater trochanter of femur;

A::abduction and medial rotation

Term

 

 

Gluteal Group

 

 

Minimus

Definition

O::lateral surface of ilium

I::greater trochanter of femur;

A::abduction and medial rotation

Term

 

 

Gluteal Group

 

 

tensor fasciae latae

Definition

O::iliac crest and lateral surface of anterior superior iliac spine; I::iliotibial tract;

A::flexion and medial rotation at hip, laterally supports the knee

Term

 

 

Adductor group

 

Adductor Brevis & Longus

Definition
adduction, flexion, and medial rotation at hip  8all bring knees together
Term

 

 

Adductor group

 

 

adductor magnus

Definition
adduction at hip, flexion and medial and lateral rotation
Term

 

 

Adductor group

 

 

Pectineus

Definition
flexion, medial rotation, and adduction at hip
Term

 

 

Adductor group

 

Gracilis

Definition
flexion at knee/hip, adduction at hip and medial rotation at hip *medial most muscle at thigh
Term

 

 

 

F. Lower Leg

Definition
-Extensors and Flexors -movement at knee
Term

 

 

Lower Leg Extensor

Rectus Femoris

Definition

O::anterior inferior iliac spine and superior acetabulum rim;

I::tibial tuberosity via quadriceps tendon, patella, and patellar ligament;

A::extension at knee and flexion at hip

Term

 

 

Lower Leg Extensor

Vastus intermedius, lateralis, medius

Definition

O::femur;

I::tibial tuberosity

A::extension at knee

deepest muscle is intermedius

Term

 

 

 

Lower Leg Flexors

Biceps femoris, semimembranosus, semitendinosus

Definition

O::ISchial Tuberosity

I::Tibia

A::Flexion at Knee

Term

 

 

Lower Leg Flexors

sartorius

Definition

O::anterior superior iliac spine;

I::medial surface of tibia near tibial tuberosity;AI::flexion at knee and lateral rotation at hip

*passes over knee and allows FLEXION at knee

*longest muscle in body

Term

 

 

Lower Leg Flexors

Popliteus

Definition

O::lateral condyle of femur;

I::posterior surface of proximal tibial shaft;

A::medial rotation of tibia and flexion at knee

*comes across knee cap

Term

 

 

 

G.Ankle and Foot

Gastrocnemius

Definition

O::femoral condyles;

I::calcaneous;

A::plantar flexion at ankle *agonist for plantar flexion

Term

 

 

Ankle and Foot

 

Tibialis Anterior

Definition

O::lateral condyle and proximal shaft of tibia;

I::base of metatarsal bones and tarsals;

A::oppose action of gastrocnemius and dorsiflexion at ankle

Term

 

 

Ankle and Foot

Soleus

Definition

O::head and proximal shaft of fibula and adjacent posteromedial shaft of tibia;

I::calcaneous;

A::plantar flexion at ankle and postural muscle when standing *synergist

*allows to stand up right

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