Kines 262 Lab Exam 3
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183 Terms
Sternocleidomastoid
What is this muscle?
Neck flexion and contralateral rotation of the head
What is the action of the sternocleidomastoid?
Clavicular (sternal end) and sternal head (manubrium)
What is the origin of the sternocleidomastoid?
Mastoid process
What is the insertion of the sternocleidomastoid?
CN XI & C2-C3
What is the innervation of the sternocleidomastoid?
Anterior Scalene
What is this muscle? (Left)
Elevates the ribs, flexion and lateral flexion of the neck, and contralateral rotation of the head
What is the action of the anterior scalene muscle?
Transverse and costal processes, C2-C7
What is the origin of the scalene muscles?
Superior surface of the first 2 ribs
What is the insertion of the scalene muscles?
Cervical spinal nerves
What is the innervation of the scalene muscles?
Middle scalene
What is this muscle? (middle)
Elevates ribs, flexion and lateral flexion of the neck, and ipsilateral rotation
What is the action of the middle and posterior scalene muscle?
Posterior scalene
What is this muscle?
Subclavius
What is this muscle?
Depression of shoulder, and protraction of the scapula
What is the action of subclavius?
1st rib
What is the origin of the subclavius?
Clavicle (inferior border)
What is the insertion of the subclavius?
C5-C6
What is the innervation of the subclavius?
Pectoralis minor
What is this muscle?
Depression, protraction, down rotation, elevates ribs
What is the action of the pectoralis minor?
Ribs 3-5
Origin of the pectoralis minor?
Coracoid process
What is the insertion of the pectoralis minor?
medial pectoral nerve (C8, T1)
What is the innervation of the pectoralis minor?
Pectoralis major
What is this muscle?
Flexion, adduction, and internal rotation of the shoulder
What is the action of the pectoralis major?
Ribs 2-6, sternum, inferomedial portion of clavicle
What is the origin of the pectoralis major?
Greater tubercle and lateral lip of the bicipital groove
What is the insertion of the pectoralis major?
Pectoral nerve (C5-T1)
What is the innervation of the pectoralis major?
Anterior deltoid
What is this muscle?
Flexion, abduction, internal rotation of the shoulder
What is the action of the anterior deltoid?
Clavicle and scapula
What is the origin of the anterior deltoid?
Deltoid tuberosity
What is the insertion of the anterior deltoid?
Axillary nerve (C5-C6)
What is the innervation of the anterior deltoid?
Coracobrachialis
What is this muscle?
Flexion and adduction of the shoulder
What is the action of the coracobrachialis?
Coracoid process
What is the origin of the coracobrachialis?
Medial margin of shaft of the humerus
What is the insertion of the coracobrachialis?
Musculocutaneous nerve (C5-C7)
What is the innervation of the coracobrachialis?
short head of biceps brachii
What is this muscle?
Flexion of the elbow, and supination
What is the action of the short head of biceps brachii?
Coracoid process
What is the origin of the short head of biceps brachii?
Radial tuberosity
What is the insertion of the short head of biceps brachii?
Musculocutaneous nerve (C5-C7)
What is the innervation of the short head of biceps brachii?
long head of biceps brachii
What is this muscle?
Flexion of shoulder and elbow, supination
What is the action of the long head of biceps brachii?
Supraglenoid tubercle
What is the origin of the long head of the biceps brachii?
Radial tuberosity
What is the insertion of the long head of biceps brachii?
Musculocutaneous nerve
What is the innervation of the long head of biceps brachii?
Brachialis
What is this muscle?
Flexion of the elbow
What is the action of the brachialis?
Anterior and distal portion of the humerus
What is the origin of the brachialis?
Ulnar tuberosity
What is the insertion of the brachialis?
Musculocutaneous nerve and radial nerve (C5-C8)
What is the innervation of the brachialis?
Pronator quadratus
What is this muscle?
Pronates the forearm/hand
What is the action of the pronator quadratus?
Anteromedial surface of the distal ulna
What is the origin of the pronator quadratus?
Anterolateral surface of the distal radius
What is the insertion of the pronator quadratus?
Median nerve (C8-T1)
What is the innervation of the pronator quadratus?
Pronator teres
What is this muscle?
Pronates forearm hand, flexion of the elbow
What is the action of the pronator teres muscle?
Medial epicondyle of the humerus and coronid process of the ulna
What is the origin of the pronator teres muscle?
Middle of lateral surface of radius
What is the insertion of the pronator teres?
Median nerve (C6-C7)
What is the innervation of the pronator teres?
Flexor carpi radialis
What is this muscle?
Flexion and abduction of the wrist
What is the action of the flexor carpi radialis?
Medial epicondyle of the humerus
What is the origin of the flexor carpi radialis?
Base of 2nd and 3rd metacarpals
What is the insertion of the flexor carpi radialis?
Median nerve (C6-C7)
What is the innervation of flexor carpi radialis?
Flexor carpi ulnaris
What is this muscle?
Flexion and adduction of the wrist
What is the action of the flexor carpi ulnaris?
Medial epicondyle of the humerus
What is the origin of the flexor carpi ulnaris?
Pisiform bone, hamate bone, and base of 5th metacarpal
What is the insertion of the flexor carpi ulnaris muscle?
Ulnar nerve (C8-T1)
What is the innervation of the flexor carpi ulnaris?
Palmaris longus
What is this muscle?
Flexion of the wrist
What is the action of the palmaris longus?
Medial epicondyle of the humerus
What is the origin of the palmaris longus?
Palmar aponeurosis and flexor retinaculum
What is the insertion of the palmaris longus?
Median nerve (C6-C7)
What is the innervation of palmaris longus?
flexor digitorum superficialis
What is this muscle?
Flexion of digits 2-5, and flexion of the wrist
What is the action of the flexor digitorum superficialis?
Medial epicondyle of the humerus
What is the origin of the flexor digitorum superficialis?
Mid-portion of middle phalanges of digits 2-5
What is the insertion of the flexor digitorum superficialis?
Median nerve (C7-T1)
What is the innervation of the flexor digitorum superficialis?
Flexor digitorum profundus
What is this muscle?
Flexion of fingers, wrist flexion
What is the action of the flexor digitorum profundus?
Postero-medial surface of ulna and interosseous membrane
What is the origin of the flexor digitorum profundus?
Base of distal phalanges of digits 2-5
What is the insertion of the flexor digitorum profundus?
Anterior interosseous nerve and ulnar nerve (C8-T1)
What is the innervation of the flexor digitorum profundus?
Flexor pollicis longus
What is this muscle?
Flexion of the thumb and wrist, abduction of the wrist
What is the action of flexor pollicis longus?
Anterior shaft of radius and interosseous membrane
What is the origin of flexor pollicis longus?
Base of distal phalanx of the thumb
What is the insertion of the flexor pollicis longus?
Median nerve (C8-T1)
What is the innervation of the flexor pollicis longus?
Adductor brevis
What is this muscle?
flexion and adduction of hip
What is the action of adductor brevis?
Inferior ramus of pubis
What is the origin of adductor brevis?
Linea aspera of femur
What is the insertion of adductor brevis?
Obturator nerve (L3-L4)
What is the innervation of adductor brevis?
Adductor longus
What is this muscle?
flexion and adduction of the hip
What is action of the adductor longus?
