Arm and Flexor Region of Forearm Flashcards
Serratus anterior (attachment)
Lateral surface of ribs AND Medial border of scapula
Serratus anterior (innervation)
Long thoracic nerve (C5-C7)
Serratus anterior (action)
Protracts scapulae, stabilizes scapula against thoracic wall, Rotates scapula superiorly
Subscapularis (attachment)
Subscapular fossa AND Lesser tubercle of humerus
Subscapularis (innervation)
Upper and Lower Subscapular nerves (C5-C6)
Subscapularis (action)
Medially rotates arm AND as part of rotator cuff: holds humeral head in glenoid cavity
Coracobrachialis (attachment)
Coracoid process of scapula AND medial surface of humerus
Coracobrachialis (innervation)
Musculocutaneous nerve (C5-C7)
Coracobrachialis (action)
Flexes and adducts arm AND resists inferior displacement of humeral head
Brachialis (attachment)
Anterior surface of humerus AND Coronoid process and tuberosity of ulna
Brachialis (innervation)
Musculocutaneous nerves (C5-C6) and radial nerve (C5-C7)
Brachialis (action)
Flexes forearm
Biceps brachii (attachment)
Short head: Coracoid process of scapula AND tuberosity of radius, bicipital groove to fascia of forearm
Long head: Supraglenoid tubercle of scapula AND tuberosity of radius, bicipital groove to fascia of forearm
Biceps brachii (innervation)
Musculocutaneous nerve (C5-C7)
Biceps brachii (action)
Supinates forearm, Flexes forearm when supinated
*short head also resists inferior displacement of humeral head
Anconeus (attachment)
Lateral epicondyle of humerus AND olecranon process of ulna, posterior surface of ulna
Anconeus (innervation)
Radial nerve (C7-T1)
Anconeus (action)
Extends forearm
Brachioradialis (attachment)
Lateral supraepicondylar ridge of humerus AND lateral surface of distal radius
Brachioradialis (innervation)
Radial nerves (C5-C7)
Brachioradialis (action)
Flexes forearm
Pronator teres (attachment)
Ulnar head: Coronoid process of ulna AND lateral surface of radius
Humeral head: Medial epicondyle of humerus AND lateral surface of radius
Pronator teres (innervation)
Median nerve (C6-C7)
Pronator teres (action)
Pronates and flexes forearm
Flexor carpi radialis (attachment)
Medial epicondyle of humerus AND base of 2nd metacarpal
Flexor carpi radialis (innervation)
Median nerve (C6-C7)
Flexor carpi radialis (action)
Flexes and aBducts hand
Palmaris longus (attachment)
Medial epicondyle of humerus AND Palmar aponeurosis, flexor retinaculum
Palmaris longus (innervation)
Median nerve (C7-C8)
Palmaris longus (action)
Flexes hand, Tenses palm
Flexor carpi ulnaris (attachment)
Humeral head: Medial epicondyle of humerus AND pisiform, hook of hamate, and base of 5th metacarpal
Ulnar head: Olecranon process and posterior surface of ulna AND pisiform, hook of hamate, and base of 5th metacarpal
Flexor carpi ulnaris (innervation)
Ulnar nerve (C7-C8)
Flexor carpi ulnaris (action)
flexes and aDducts hand
Flexor digitorum superficialis (attachment)
Humeroulnar head: medial epicondyle of humerus, coronoid process of ulna AND middle phalanges of digits 2-5
Radial head: anterior surface of radius AND middle phalanges of digits 2-5
Flexor digitorum superficialis (innervation)
Median nerve (C7-T1)
Flexor digitorum superficialis (action)
Flexes middle phalanges at proximal interphalangeal joints of digits 2-5, Flexes digits at metacarpophalangeal joints 2-5
Flexor digitorum profundus (attachment)
Anterior surface of ulna AND
medial part: distal phalanges of digits 4 & 5
lateral part: distal phalanges of digits 2 & 3
Flexor digitorum profundus (innervation)
Medial part: ulnar nerve (C8-T1)
Lateral part: median nerve (C8-T1)
Flexor digitorum profundus (action)
Flexes distal phalanges at distal interphalangeal joints of digits 2-5
Flexor pollicis longus (attachment)
Anterior surface of radius AND distal phalanx of digit 1
Flexor pollicis longus (innervation)
Median nerve (C8-T1)
Flexor pollicis longus (action)
Flexes distal phalanx at interphalangeal joint of digit 1
Pronator quadratus (attachment)
Anterior surface of distal ulna AND anterior surface of distal radius
Pronator quadratus (innervation)
Median nerve (C8-T1)
Pronator quadratus (action)
Pronates forearm