Help
Options
Didn't know it?
click below
click below
Knew it?
click below
click below
Don't Know
Remaining cards (0)
Know
retry
shuffle
restart
0:00
Embed Code - If you would like this activity on your web page, copy the script below and paste it into your web page.
Normal Size Small Size show me how
Normal Size Small Size show me how
anatomy - R.J.
muscles of the thorax, abdomen, & pelvis - R.J.
| muscle | origin | insertion | action | location |
|---|---|---|---|---|
| Pectoralis Major | -sternum; clavicle; cartilage of ribs 1-7; aponeurosis of external oblique | Humerus | -flexes, adducts rotates the arm medially. | thorax |
| Pectoralis Minor | Stabilizes scapular for arm movements; elevates ribs in inspiration. | thorax | ||
| External intercostals | -rib-superior | -rib-inferior | -elevates ribs; inhalation | thorax |
| Internal intercostals | -rib-inferior | -rib-superior | -depresses ribs; expiration | thorax |
| Diaphragm | -sternum; costal cartilage 7-12; Lumbar vertebrae | Central tendon | -Increases volume of thoracic cavity (respiration) -increase intraabdominal pressure (micturition, defecation, childbirth) | thorax |
| External oblique | -lower 8 ribs (5-12) | -Iliac crest -linea alba | -lateral rotation & lateral flexion of the trunk | anterior abdomen |
| Internal oblique | Ilium | -10-12th ribs | -lateral rotation & lateral flexion of trunk | anterior abdomen |
| Transverse oblique | 7-12th costal cartilage; ilium | -sternum; pubis | -compresses abdomen | anterior abdomen |
| Rectus abdominis | -pubis | -sternum; inferior ribs | -flexes trunk at the waist; compresses abdomen | anterior abdomen |
| Psoas major & iliacus | -flexes thigh (hip joint) & flexes Lumbar vertebral column (trunk) | posterior abdomen | ||
| Quadratus lumborum | -flexes lumbar region laterally -fixes ribs 11 & 12 in forced expiration | posterior abdomen | ||
| DELTOID | CLAVICLE | HUMERUS; SCAPULA | PRIMEMOVER arm abduction, flexion and extension of arm; medial and lateral arm rotation | upper limb |
| Serratus anterior | Ribs 1-8 | Scapula | Fixes scapula in place during ant. arm movement; rotates scapula so inferior angle moves lateral and upward; abduction and raising arm…horizontal arm mvt..boxers muscle | anterior thorax |
| Coracobrachialis | Scapula | Humerus | Arm flexsion; adduction | upper limb |
| Trapezius | ocipital (ext. occip. Prot. & sup nuchal line -ligamentum nuchae; C7; all T vertebrae | -scapula (spine, acromion) -clavicle | -elevation, depression, adduction of scalpula -extensor of head | posterior thorax |
| Rhomboid major | Adduction (retraction) of scapula; fixes scapula for arm mvt. | posterior thorax | ||
| Rhomboid minor | Adduction (retraction) of scapula; fixes scapula for arm mvt. | posterior thorax | ||
| Levator scapulae | Elevates scapula | posterior thorax | ||
| Latissimus dorsi | Thoracolumbar fascia; iliac crest; lower 3 ribs | Humerus | Extends, adducts, medially rotates arm | posterior thorax |
| Pelvic diaphragm -levator ani: pubococcygeus + iliococcygeus - coccyge | -both function to support pelvic floor & resists increased intraabdominal pressure; aids in defecation | pelvic muscle | ||
| Urogenital diaphragm | -stretches across anterior half of pelvic outlet to support the external genitals. | pelvic muscle | ||
| scalenes | -to elevate ribs 1 & 2 during inhalation; flex cervical spine;flex | vertebral muscles |
Created by:
mal1ce13
Popular Anatomy sets