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Ch 11 Part 2

Muscles

QuestionAnswer
Abdominal Wall: Four Muscles: 1) External Oblique 2) Internal Oblique 3) Transversus Abdominus 4) Rectus Abdominus
Abdominal Wall Muscle Functions: -strengthen abdominal wall -lateral flexion and rotation of trunk -contain viscera -shitting in any form (including child birth), vomiting and coughing
External and Internal Oblique of Abdominal Wall Function: -compresses abdominal wall -flexes the vertebral column -aids in trunk rotation and lateral flexion
Rectus Abdominus of Abdominal Wall Function: 1. flexes and rotates lumbar region 2. fixes and depresses ribs 3. stabilizes pelvis while walking 4. abs during sit ups and crunches
Tranversus Abdominus of Abdominal Wall Function: 1. compresses the abdominal contents
Shoulder Joint: Humerus Movers Characteristics 1. movers usually originate from pectoral girdle except for pectoralis major and latissmus dorsi 2. humerus abductor: originates from middle region of deltoid 3. humerus adductor: originates from pectoralis major and latissmus dorsi
Humerus Arm flexor origin is anterior to shoulder joint
Humerus Arm extensor origin is posterior to shoulder joint
Shoulder Joint: Humerus Prime Movers 1. Pectoralis Major 2. Latissimus Dorsi 3. Deltoid
Shoulder Joint: Humerus Movements: Fibers originate anteriorly in DELTOID 1.arm FLEXION 2. medial rotation
Shoulder Joint: Humer Movements: Fibers originate posteriorly in DELTOID 1. arm extension 2. lateral rotation
Muscles of Forearm: Superficial Anterior 1. Pronator Teres 2. Flexor Carpi Radialis 3. Palmeris Longus 4. Flexor Carpi Ulnaris 5. Flexor Digitorum Superficialis
Muscles of Forearm: Pronator Teres pronates forearm
Muscles of Forearm: Flexor Carpi Radialis 1. flexes wrist 2. abducts hand
Muscles of Forearm: Palmaris Longus 1. flexes the wrist 2. tightens skin and fascia during hand movement
Muscles of Forearm: Flexor Carpi Ulnaris 1. flexes wrist 2. adducts hand
Muscles of Forearm: Flexor Digitorum Superficialis 1. Flexes wrist 2. flexes middles phalanges of fingers 2-5
Muscles of Forearm: Posterior 1. Extensor Corpi Radialis Longus 2. Brachioradialis 3. Extensor Digitorum 4. Extensor Carpi Ulnaris
Muscles of Forearm: Brachioradialis forearm flexion
Muscles of Forearm: Extensor Carpi Radialis Longus 1. extends wrist with extensor corpi ulnaris 2. abducts wrist with flexor corpi radialis
Muscles of forearm: Extensor Digitormus 2. finger extension
Muuscles of Forearm: Extensor Carpi Ulnaris 1. extends wrist with extensor corpi radialis 2. adducts wrist with flexor corpi ulnaris
Created by: vs604