Anatomy

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Author:
Jwannn
ID:
233424
Filename:
Anatomy
Updated:
2013-10-05 15:53:46
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Muscles 29
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Description:
Muscles 1-29 for the 1st Muscle Quiz
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    • Scalenes Anterior
    • Origin: Anterior tubercles of transverse processes of C3-6
    • Insertion: top of the 1st rib
    • Action: helps w/ breathing & lateral flexion of the neck when the 1st rib is fixed
    • Nerve: anterior primary rami of c5,6
    • Scalnes Middle
    • Origin: posterior tubercles of transverse processes of c2-7
    • Insertion: top of the 1st rib
    • Action: helps w/ breathing
    • Nerve: anterior primary rami of c3-8
    • Scalenes Posterior
    • Origin: Posterior tubercles of transverse processes c4-6
    • Insertion: back/lateral surface of 2nd rib
    • Action: helps w/ breathing
    • Nerve: Anterior primary rami of c6-8
    • Platysma
    • Origin: skin over the lower neck and upper lateral chest
    • Insertion: inferior border of mandible and skin over lower face and angle of mouth
    • Action: Depresses & wrinkles skin of lower face & mouth. Depression of mandible
    • Nerve: cervical branch of facial nerve
    • Sternocleidomastoid
    • Origin: the superior clavicle
    • Insertion: lateral half of the mastoid process
    • Action: Flexes/laterally rotates cervical spine. Protracts head & flexes neck when working together. Extends head
    • Nerve: spinal accessory nerve (c1-5)
    • Multifidus
    • Origin: Laminae of vertebra
    • Insertion: spinous processes 2-3 levels above
    • Action: extends spine
    • Nerve: posterior primary rami
    • Rotatores
    • Origin: transverse processes
    • Insertion: spinous processes 1 above
    • Action: rotates spine
    • Nerve: posterior primary rami
    • Transversospinalis
    • Origin: transverse processes
    • Insertion: spinous processes above and occipital bone
    • Action: extends head/spine & lateral flexes spine
    • Nerve: posterior primary rami
    • Spinalis
    • Origin: spinous process
    • Insertion: spinous processes 6 levels up
    • Action: lateral flexion of spine
    • Nerve: posterior primary rami
    • Longissimus
    • Origin: transverse processes
    • Insertion: transverse processes several levels above
    • Action: extends spine
    • Nerve: posterior primary rami
    • Illiocostalis
    • Origin: Iliac crest, sacrum, lumbar vertebrae
    • Insertion: ribs, cervical transverse processes
    • Action: extends and laterals flexes spine
    • Nerve: posterior primary rami
    • Diaphragm
    • Origin:
    •     -Sternal Part: inner part of the xiphoid process
    •     -Costal Part:inner surface of the lower 6 ribs and their cartilages
    •      -Lumbar Part: upper 2-3 lumbar vertebrae and lateral and medial lumocostal arches
    • Insertion: fibers converge on a central tendon
    • Action: draws central tendon inferiorly for inspiration
    • Nerve: Phrenic
    • Quadratus Lumborum
    • Origin: last rib, transverse processes of the upper four lumbar vertebrae
    • Insertion: illiolumbar ligament, iliac crest
    • Action:
    •    1. Lateral trunk flexion
    •    2. Trunk extension
    •    3. Fixes the 12th rib during force expiration
    •    4. Elavate Illium
    • Nerve: T12 & L1
    • Rectus Abdominus
    • Origin: crest of the pubis and pubic synthesis
    • Insertion: Costocartilage of 5th, 6th, 7th ribs and xiphiod process
    • Action: Flexes vertebral column and compresses abdomen
    • Nerve: 7th to 12th intercostal
    • Transverse Abdominus
    • Origin: Thoracolumbar fascia
    • Insertion: Linea Alba
    • Action: Increase intraabdominal pressure and draws our abdomen in
    • Nerve: 6th to 12th intercostal
    • Internal Oblique
    • Origin: inguinal ligament
    •                  -Ililac crest
    • Insertion: costochondral cartilage
    •                  -Linea alba
    • Action: Trunk flexion (both), lateral flexion (same), rotation (same)
    • Nerve: 8th to 12th intercostal
    • External Oblique
    • Origin: ribs 5-12
    • Insertion: Iliac crest
    • Action: flexion (both), lateral flexion (same), rotation (opposite)
    • Nerve: 8-12 intercostal
    • Internal Intercostal
    • Origin: Cartilage angles of upper 11 ribs
    • Insertion: superior border of the rib below
    • Action: draws ribs downward for expiration
    • Nerve: intercostal
    • External Intercostal
    • Origin: Lower margin of upper 11 ribs
    • Insertion: superior border of the rib below
    • Action: draws ventral part of ribs upward during inspriation
    • Nerve: Intercostal
    • Triceps Brachii
    • Origin:
    •     -Lateral Head: posterior humerus superior to radial groove
    •     -Long Head: infraglenoid tubercle of scapula
    •     -Medial Head: posterior humerus inferior to radial groove
    • Insertion: proximal olecranon and fascia of forearm
    • Action: extensor of the forearm, shoulder extensor
    • Nerve: radial nerve
    • Bracialis
    • Origin: distal 1/2 of anterior humerus
    • Insertion: coronoid process and tuberosity of ulna
    • Action: elbow flexion
    • Nerve: musculocutaneous nerve
    • Biceps Brachii
    • Origin:
    •    -short head: coracoid process
    •    -long head: supraglenod tubercle
    • Insertion: tuberosity of radius
    • Action: Elbow flexion, supination, and shoulder flexion
    • Nerve: musculocutaneous nerve
    • Coracobrachialas
    • Origin: tip of coraciod process
    • Insertion: middle medial 1/3 of humerus
    • Action: flexion and adduction of humerus
    • Nerve: musculocutaneous nerve
    • Teres Major
    • Origin: posterior aspect of inferior angle of the scapula
    • Insertion: medial lip of the intertubercular sulcus of the humerus
    • Action: internal rotation of the humerus
    • Nerve: lower subscapular nerve
    • Teres Minor
    • Origin: middle lateral border of the scapula
    • Insertion: inferior facet of the greater tubercle of humerus
    • Action: lateral rotation of humerus, depresses humerus in glenoid
    • Nerve: axillary nerve
    • Infraspinatus
    • Origin: infraspintus (below the spine of the scapula) fossa
    • Insertion: middle facet of greater tubercle of humerus
    • Action: external rotation of humerus, depresses humerus in glenoid
    • Nerve: suprascapular nerve
    • Supraspinatus
    • Origin: suprasinatus fossa
    • Insertion: superior facet of greater tubercle
    • Action: Abduction to 30 degrees, depresses the humerus in the glenoid
    • Nerve: Suprascapular Nerve
    • Subscapularis
    • Origin: subscapular fossa
    • Insertion: medial rotation of humerus, adduction of humerus and holds humerus in glenoid
    • Nerve: Upper and lower subscapular nerves

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