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Muscle
Origin Insertion Action Nerve
20
Anatomy
Undergraduate 1
09/03/2014

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Cards

Term
OCCIPITOFRONTALIS
Definition

O:Epicranial Aponeurosis

I:Skin of eyebrows and bridge of nose

A:Raise eyebrows, wrinkle forehead

N:Cranial nerve 7

Term
TEMPORALIS
Definition

O:Temporal Bone

I:Mandible

A:Elevates Jaw.

N:Cranial Nerve 5

Term
MASSETER
Definition

O:Zygomatic Arch

I:External Mandible

A:Elevates Jaw

N:Cranial Nerve 5

Term
STERNOCLEIDOMASTOID
Definition

O:STERNUM, CLAVICLE

I:TEMPORAL BONE

A:FLEXES HEAD AND NECK, ROTATES HEAD N:ACCESSORY NERVE

Term
TRAPEZIUS
Definition

O:OCCIPITAL BONE, VERTEBRAE

I:CLAVICLE, SCAPULA 

A:RAISE & LOWER SHOULDER(SHURGS),

EXTENDS HEAD AND NECK WHEN OCCIPUT ACTS AS INSERTION 

N:SPINAL ACCESSORY; 2,3 AND 4 CERVICAL NERVE

Term
ERECTOR SPINAE
Definition

O:REGIONS OF PELVIS AND RIBS 

I:RIBS AND VERTEBRA 

A:EXTENDS LATERALLY FLEXES SPINE 

N:SPINAL, CERVICAL, THORACIC, AND LUMBAR

Term
RECTUS ABDOMINIS
Definition

O:PELVIS(PUBIC BONE AND PUBIC SYMPHISIS) 

I:STERNUM(XIPHOID PROCESS)

A:AID IN STRAINING, DEFECATION. ANTAGONISTS OF DIAPHRAGM. RELAXES AS IT CONTRACTS. FLEXES TRUNK 

N:LAST SIX INTERCOSTAL NERVES

Term
EXTERNAL OBLIQUES
Definition

O:RIBS LOWER 8

I:PELVIS/ LINEA ALBA

A:COMPRESS ABDOMEN. ROTATE TRUNK LATERALLY N:LOWER 7 INTERCOSTAL NERVES, ILIOHYPOGASTRIC NERVE

Term
INTERNAL OBLIQUES
Definition

O:PELVIS/ LUMBODORSAL FASCIA

I:RIBS LOWER 3/ LINEA ALBA

A:PULL FRONT OF PLEVIS UP. FLATTENING LUMBAR CURVE, COMMON FIGURE FAULTS OF PROTRUDING ABDOMEN AND LORDOSIS DEVELOPMENT 

N:LAST THREE INTERCOSTAL NERVES: ILIOHYPOGASTRIC, ILIOINGUNIAL NERVES

Term
TRANSVERSE ABDOMINUS
Definition

O:RIBS LOWER 6, PELVIS(ILLIAC CREST), LUMBODORSAL FASCIA 

I:PUBIC BONE, LINEA ALBA, RIBS CC OF 5,6 AND 7

A:COMPRESS ABDOMEN, ROTATE TRUNK LATERALLY 

N:LAST THREE INTERCOSTAL NERVES; ILIOHYPOGASTRIC AND ILIOINGUINAL, LAST 5 INTERCOSTAL NERVES; ILIOHYPOGASTRIC AND ILIOINGUINAL

Term
LEVATOR SCAPULAE
Definition

O:C1-C4 TRANSVERSE PROCESS 

I:SCAPULA (SUPERIOR ANGLE)

A:ELEVATE AND RETRACT SCAPULA, ABDUCTS NECK 

N:DORSAL SCAPULAR NERVE

Term
RHOMBOID MAJOR
Definition

O:T1-T4

I:SCAPULA( MEDIAL BORDER)

A:RETRACT, ROTATE AND FIXES SCAPULA 

N:DORSAL SCAPULAR NERVE

Term
RHOMBOID MINOR
Definition

O:C6-C7

I:SCAPULA (MEDIAL BORDER) 

A:RETRACT, ROTATE AND FIXES SCAPULA 

N:DORSAL SCAPULAR NERVE

Term
SERATUS ANTERIOR
Definition

O:RIBS UPPER EIGHT OR NINE 

I:SCAPULA (ANTERIOR SURFACE, VERTEBRAL BORDER) 

A:PULLS SHOULDER DOWN & FORWARD; ABDUCTS AND ROTATES IT UPWARD. 

N:LONG THORACIC

Term
PECTORALIS MAJOR
Definition

O:CLAVICLE, STERNUM, CC OF TRUE RIBE 

I:HUMERUS  (GREATER TUBERCLE) 

A:FLEXES ARM, ADDUCTS ARM ANTERIORLY; DRAWS IT ACROSS THE CHEST 

N:MEDIAL AND LATERAL ANTERIOR THORACIC

Term
PECTORALIS MINOR
Definition

O:RIBS 2-5 

I:SCAPULA (CORACOID) 

A:PULLS SHOULDER GIRDLE DOWN AND FORWARD 

N:MEDIAL AND LATERAL ANTERIOR THORACIC

Term
TERES MAJOR
Definition

O:SCAPULA (LOWER PART, AXILLARY BORDER) 

I:HUMERUS (UPPER PART, ANTERIOR SURFACE) 

A:ASSISTS IN EXTENSION, ADDUCTION, MEDIAL ROTATION OF ARM 

N:LOWER SUBSCAPULAR

Term
TERES MINOR
Definition

O:SCAPULA (AXILLARY BORDER) 

I:HUMERUS (GREATER TUBERCLE)

A:ROTATES ARM OUTWARD 

N:AXILLARY

Term
LATTISIMUS DORSI
Definition

O:VERTEBRAE, ILLIUM CREST, LUMBODORSAL FASCIA 

I:HUMERUS (INTERTUBERCULAR GROOVE) 

A:EXTENDS ARM, ADDUCTS ARM POSTERIORLY 

N:THORACODORSAL

Term
INFRASPINATUS
Definition

O:SCAPULA (INFRASPINATUS BORDER) 

I:HUMERUS (GREATER TUBERCLE) 

A:ROTATES ARM OUTWARD 

N:SUPASCAPULAR

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