Lab 4 & 5 Muscles Flashcards
Pectoralis Major Origin and Insertion
Origin: Clavicle
Insertion: Greater Tuberosity of Humerus
Pectoralis Minor Origin and Insertion
Origin: Upper Ribs
Insertion: Coracoid Process of scapula
Action of Pectoralis Major
Adduction and medial rotation of the humerus
Nerve supply to Pectoralis Major
Medial and Lateral Pectoral Nerve
Action of Pectoralis Minor
Protraction/abduction of scapula
Nerve supply to Pectoralis Minor
Medial Pectoral Nerve
Subclavius Origin and Insertion
Origin: 1st Rib
Insertion: Subclavian groove of clavicle
Action of Subvclavius
Moves clavicle medially
Nerve supply to Subclavius
Nerve to Subclavius
Brachioradialis Origin and Insertion
Origin: Lateral Supracondylar ridge of humerus
Insertion: Styloid Process of radius
Action of Brachioradialis
Flex forearm
Nerve supply to Brachioradialis
Radial Nerve
Extensor Carpi Radialis Longus Origin and Insertion
Origin: Lateral epicondyle of humerus
Insertion: 2nd Metacarpal
Acton of Extensor Carpi Radialis Longus
Extend the hand
Nerve supply to Extensor Carpi Radialis Longus
Radial Nerve
Extensor Carpi Radialis Brevis Origin and Insertion
Origin: Lateral epicondyle of humerus
Insertion: 3rd Metacarpal
Action of Extensor Carpi Radialis Brevis
Extend the hand
Nerve supply to Extensor Carpi Radialis Brevis
Radial Nerve
Extensor Digitorum Maximus Origin and Insertion
Origin: Lateral epicondyle of humerus
Insertion: Middle phalanx of digits 2-5
Action of Extensor Digitorum Maximus
Extend the hand
Nerve supply to Extensor Digitorum Maximus
Radial Nerve
Extensor Digiti Minimi Origin and Insertion
Origin: Lateral epicondyle of humerus
Insertion: Proximal phalanx of digit 5
Action of Extensor Digiti Minimi
Extends 5th digit
Nerve supply to Extensor Digiti Minimi
Radial Nerve
