Chapter 50 Flashcards
Pectoral region muscles (3)
Pectoralis major m
Pectoralis minor m
Serratus anterior m.
Pectoralis major action
Adduct, medially rotate and flex arm at shoulder
Pectoralis major innervation
Medial pectoral n
Lateral pectoral n
Pectoralis minor action
Depress scapula
Pectoralis minor innervation
Medial pectoral n
Serratus anterior action
Upward rotation of the scapula
Serratus anterior innervation
Long thoracic n
Muscles of the shoulder (6)
Deltoid Supraspinatus Infraspinatus Teres minor Subscapularis Teres major
Action of the deltoid
Flex, extend, medially AND literally rotate, abduct arm at shoulder
Deltoid innervation
Axillary n
Supraspinatus action
Abduct arm at shoulder
Supraspinatus innervation
Suprascapular nerve
Infraspinatous muscle action
Lateral rotation of arm at shoulder
Infraspinatus m innervation
Suprascapular n
Teres minor action
Lateral rotation of the arm at shoulder
Teres minor innervation
Axillary n
Subscapularis action
Medial rotation of arm at shoulder
Subscapularis m innervation
Upper and lower subscapular nerves
Teres major action
Adduct and medially rotate arm at shoulder
Teres major innervation
Lower subscapular nerve
Arm muscles (4)
Triceps brachii
Biceps brachii
Coracobrachialis
Brachialis
Triceps brachii action
Extend forearm at elbow
Biceps brachii action
Flex and supinate forearm at elbow
Triceps brachii innervation
Radial n
Biceps brachii innervation
Musculocutaneous n
Coracobrachialis action
Flex arm at shoulder
Coracobrachialis action
Flex arm at shoulder
Coracobrachialis innervation
Musculocutaneous nerve
Brachialis action
Flex forearm at elbow
Brachialis innervation
Musculocutaneous
Anterior superficial forearm muscles (4)
Pronator teres m
Flexor carpi radialis m
Palmaris longus m.
Flexor carpi ulnaris m
Pronator teres action
Pronate forearm at elbow
Pronator teres innervation
Median n
Flexor carpi radialis action
Flex and abduct hand at wrist
Flexor carpi radialis innervation
Median nerve
Palmaris longus action
Flex hand at wrist
Palmaris longus innervation
Median n
Flexor carpi ulnaris action
Flex and adduct hand at wrist
Flexor carpi ulnaris innervation
Ulnar n
Anterior intermediate forearm muscle
Flexor digitorum superficialis
Flexor digitorum superficialis action
Flex digits 2-5
Flexor digitorum superficialis innervation
Median n
Anterior deep forearm muscles (3)
Flexor pollicis longus m
Flexor digitorum profundus m
Pronator quadratus m
Flexor pollicis longus action
Flex thumb
Flexor pollicis longus innervation
Anterior interosseous n (AIN)
Flexor digitorum profundus action
Flex digits 2-5
Flexor digitorum profundus innervation
AIN (lateral) Ulnar n (medial)
Pronator quadratus action
Pronate hand at wrist
Pronator quadratus innervation
AIN (anterior interosseous n)
Posterior superficial forearm muscles (7)
Brachioradialis m Extensor carpi radialis longus m Extensor carpi radialis brevis m Extensor digitorum m Extensor digiti minimi m Extensor carpi ulnaris m Anconeus m
Brachioradialis action
Flex forearm at elbow
Brachioradialis innervation
Radial n
Extensor carpi radialis brevis action
Extend and abduct hand at wrist
Extensor carpi radialis brevis innervation
Deep branch of radial n
Extensor carpi radialis longus action
Extend and abduct hand at wrist
Extensor carpi radialis longus innervation
Radial n
Extensor digitorum action
Extend digits 2-5
Extensor digitorum innervation
Posterior interosseous n (PIN)
Extensor digiti minimi action
Extend digit 5
Extensor digiti minimi innervation
PIN
Extensor carpi ulnaris action
Extend and adduct hand at wrist
Extensor carpi ulnaris innervation
PIN
Anconeus action
Extend forearm at elbow
Anconeus innervation
Radial n
Posterior deep forearm muscles (5)
Supinator m Abductor pollicis longus m Extensor pollicis brevis m Extensor pollicis longus m Extensor indicis m
Supinator action
Supinate forearm at elbow
Supinator innervation
PIN
Abductor pollicis longus action
Abduct thumb
Abductor pollicis longus innervation
PIN
Extensor pollicis brevis action
Extend thumb
Extensor pollicis longus innervation
PIN
Extensor pollicis brevis action
Extend thumb
Extensor pollicis brevis innervation
PIN
Extensor pollicis longus action
Extend thumb
Extensor pollicis longus innervation
PIN
Extensor indicis action
Extend index finger
Extensor indicis innervation
PIN
Thenar hand muscles
Abductor pollicis brevis m
Flexor pollicis brevis m
Opponens pollicis m
Adductor pollicis m
Hypothenar hand muscles (4)
Abductor digiti minimi m
Flexor digiti minimi brevis m
Opponens digiti minimi m
Palmaris brevis m
Small hand muscles
Lumbricals 1-4
Dorsal interossei 1-4
Palmar interossei 1-4