Gross Anatomy Lab Practical Flashcards
Trapezius Origin and Insertion
Origin: External Occipital Protuberance
Insertion: Clavicle
Action of Trapezius
Stabilizes the scapula
Nerve Supply for Trapezius
Spinal Accessory Nerve
Rhomboid Major Origin and Insertion
Origin: Spines of Upper Thoracic Vertebrae
Insertion: Vertebral border of the scapula
Action of Rhomboid Major
Stabilizes the Scapula
Nerve Supply to Rhomboid Major
Dorsal Scapular Nerve (DSN)
Rhomboid Minor Origin and Insertion
Origin: Spine of Lower Cervicals and T1
Insertion: Vertebral border of the scapula
Action of rhomboid Minor
Stabilizes the scapula
Nerve Rhomboid Minor
Dorsal Scapular nerve (DSN)
Levator Scapula Origin and Insertion
Origin: Transverse processes of the upper cervicals
Insertion: Superior angle of the scapula
Action fo Levator Scapula
Stabilizes scapula
Nerve to Levator Scapula
Dorsal Scapular Nerve (DSN)
Latissimus Dorsi Origin and Insertion
Origin: Spines of the lower thoracic and lumbars
Insertion: Intertubercular groove of the humerus
Action of the Latissimus Dorsi
Forced expiration
Nerve to Latissimus Dorsi
Thoracodorsal Nerve
Serratus Anterior Origin and Insertion
Origin: Upper ribs
Insertion: Vertebral border of scapula
Action of the Serrates Anterior
Stabilizes the scapula
Nerve supply to Serratus Anterior
Long Thoracic Nerve
Deltoid Origin and Insertion
Origin: Clavicle
Insertion: Deltoid tuberosity of the humerus
Action of the Deltoid
Abducts arm
Nerve supply to Deltoid
Axillary Nerve
Supraspinatus Origin and Insertion
Origin: Supraspinous fossa of scapula
Insertion: Greater tuberosity of humerus
Action of the Supraspinatus
Stabilizes the shoulder joint
Nerve supply to Supraspinatus
Suprascapular nerve
Infraspinatus Origin and Insertion
Origin: Infraspinatus fossa of scapula
Insertion: Greater tuberosity
Action of Infraspinatus
Stabilizes the shoulder joint
Nerve supply to Infraspinatus
Suprascapular Nerve
Subscapularis Origin and Insertion
Origin: Subscapular fossa of the scapula
Insertion: Lesser Tuberosity of the humerus
Teres Major Origin and Insertion
Origin: Inferior angle of the scapula
Insertion: Medial lip of intertubercular groove
Action of the Teres Major
Stabilizes should joint
Nerve Supply to the Teres Major
Lower Subscapular Nerve
Teres Minor Origin and Insertion
Origin: Axillary border of the scapula
Insertion: Greater Tuberosity of the humerus
Action of Teres Minor
Stabilizes the shoulder joint
Nerve supply to Teres Minor
Axillary Nerve
Triceps Brachii: Media, lateral, and long heads Origin and Insertion
Origin: Long head-infraglenoid tubercle/scapula
Medial and lateral head=shaft/humerus
Insertion: Olecranon process/ulna
Action of the Triceps Brachii
Extension of the Forearm
Nerve supply to Triceps Brachii
Radial Nerve
Biceps Brachii: Long and short heads origin and insertion
Origin: Short head=coracoid process/scapula
Long head=Supraglenoid tubercle/scapula
Insertion: Shaft of the ulna
Action of the Biceps Brachii
Flexion of the forearm
Nerve Supply to the Biceps Brachii
Musculocutaneous Nerve
Coracobrachialis Origin and Insertion
Origin: Coracoid process of the scapula
Insertion: Shaft of the humerus
Action of the coracobrachialis
Flexion and weak adduction of arm
Nerve supply to the coracobrachialis
Musculocutaneous Nerve
Brachialis Origin and Insertion
Origin: Shaft of the humerus
Insertion: Coronoid process of the ulna
Action of the brachialis
flexion of the forearm
Nerve supply to the brachialis
Musculocutaneous Nerve
Pronator Teres Origin and Insertion
Origin: Medial Epicondyle of the humerus
Insertion: Pronator ridge of the radius
Action of the Pronator Teres
Pronates forarm at superior radio-ulnar joint
Nerve supply to the Pronator Teres
Median Nerve
Flexor Carpi Radialis Origin and Insertion
Origin: Medial Epicondyle of the humerus
Insertion: 2nd Metacarpal with small slip to 3rd
Action of Flexor Carpi Radialis
Flexion of hand at wrist joint
Nerve supply to Flexor Carpi Radialis
Median Nerve
Palmaris Longus Origin and Insertion
Origin: Medial epicondyle of the humerus
Insertion: Palmar aponeurosis
Action of the Palmaris Longus
Helps flex the hand
Nerve Supply to the Palmaris Longus
Median Nerve
Flexor Digitorum Superficialis Origin and Insertion
Origin: Medial epicondyle of the humerus
Insertion: Meddle Phalanges of Digits 2-5
Action to Flexor Digitorum Superficialis
Helps flex the hand
Nerve Supply of Flexor Digitorum Superficialis
Median Nerve
Flexor Carpi Ulnaris Origin and Insertion
Origin: Medial Epicondyle of the humerus
Insertion: 5th metacarpal
Action of Flexor Carpi Ulnaris
Flexion of the hand at wrist joint
Nerve supply to Flexor Carpi Ulnaris
Ulnar Nerve
Flexor Digitorum Profundus Origin and Insertion
Origin: Shaft of the ulna
Insertion: Distal phalanges digits 2-5
Action of Flexor Digitorum Profundus
Helps flex the hand
Nerve supply to Flexor Digitorum Profundus
Ulnar and Median Nerve
Flexor Pollicus Longus Origin and Insertion
Origin: Shaft of the radius
Insertion: Distal Phalanx of digit 1
Action of Flexor Pollicus Longus
Flexes the thumb at the IP joint
Nerve supply to Flexor Pollicus Longus
Median Nerve
Pronator Quadrates Origin and insertion
origin: shaft of the ulna
insertion: shaft of the radius
Action of Pronator Quadratus
Pronation of forearm at the inferior radial-ulnar joint
Nerve supply to Pronator Quadratus
Median Nerve
Supinator Origin and Insertion
Origin: Supinator crest of the ulna
Insertion: shaft of the radius
Action of the supinator
Supinates forearm
Nerve supply of the supinator
Radial nerve
Abductor Pollicis Longus Origin and Insertion
Origin: shaft of the ulna
Insertion: 1st metacarpal
Action of the Abductor Pollicis Longus
abducts digit 1 at C-M joint
Nerve supply to Abductor Pollicis Longus
radial nerve
Extensor Pollicis Longus origin and insertion
origin: shaft of ulna
Insertion: distal phalynx of digit 1
action of Extensor Pollicis Longus
extend digit 1 at IP joint
nerve supply to Extensor Pollicis Longus
radial nerve
Extensor Pollicis brevis origin and insertion
origin: shaft of radius
insertion: proximal phalynx of digit 1
action of Extensor Pollicis brevis
extends digit 1 at MP joint
nerve supply to Extensor Pollicis brevis
Radial Nerve
Extensor indicus origin and insertion
origin: shaft of ulna
insertion: proximal phalynx of digit 2
action of Extensor indicus
extends digit 2 at MP joint
nerve supply to Extensor indicus
radial nerve
Anconeous origin and insertion
origin: lateral epicondyle of the humerus
insertion: olecranon process of ulna
action of Anconeous
extends the forearm
nerve supply to Anconeous
radial nerve
abductor polliciis brevis origin and insertion
origin: trapezium
insertion: proximal phalynx of digit 1
action of abductor pollicis brevis
abducts digit 1 at MP joint
nerve supply to abductor pollicis brevis
median nerve
opponens pollicis origin and insertion
origin: trapezium
insertion: 1st metacarpal
action of opponens pollicis
medially rotates 1st metacarpal
nerve supply to opponens pollicis
median nerve
flexor pollicis brevis origin and insertion
origin: trapezium
insertion: proximal phalynx of digit 1
action of flexor pollicis brevis
flexes digit 1 at MP joint
nerve supply to flexor pollicis brevis
median and ulnar nerve
adductor pollicis origin and insertion
origin: trapezoid
insertion: proximal phalynx of digit 1
action of adductor pollicis
adducts digit 1
nerve supply to adductor pollicis
ulnar nerve
abductor digit minimi origin and insertion
origin: pisiform
insertion: proximal phalynx of digit 5
action of abductor digiti minimi
abducts digit 5
nerve supply abductor digiti minimi
ulnar nerve
flexor digiti minimi orign and insertion
origin: hamate
insertion: proximal phalynx of digit 5
action of flexor digiti minimi
flexes digit 5 at MP joint
nerve supply to flexor digiti minimi
ulnar nerve
opponens digiti minimi origin and insertion
origin: hamate
insertion: 5th metacarpal
action of opponens digiti minimi
laterally rotates 5th metacarpal
nerve supply to opponens digiti minimi
ulnar nerve
lumbricals 1-4 origin and insertion
origin: tendons of flexor digitorum profundous muscle
insertion: tendons of extensor digitorum muscle
action of lumbricals 1-4
flexes MP joints
nerve supply to lumbricals 1-4
median: 1&2
ulnar: 3&4
dorsal interossei origin and insertion
origin: 2-4 metacarpal
insertion: proximal phalynx of digit 2 & 4
action of dorsal interossei
abducts digits 2-4
nerve supply to dorsal interossei
ulnar nerve
action of Subscapularis
stabilize the shoulder joint
nerve supply to Subscapularis
upper and lower supscapular nerve