chapter 11 & 12 Flashcards
O=supracondylar ridge of humerus
I=base of 2nd metacarpal
A=wrist extension & radial deviation
Extensor carpi radialis longus
O=lateral supracondylar ridge of the humerus (distal)
I=styloid process of radius (distal)
A=elbow flexion
Brachioradialis
O=distal 1/2 of the anterior humerus
I=coronoid process/ulnar tuberosity
A=elbow flexion
Brachialis
Attachment for biceps
Radial tuberosity
O=lateral epicondyle of humerus
I=base of 5th metacarpal
A=wrist extension & ulnar deviation
Extensor carpi ulnaris
What do the flexor carpi ulnaris & the extensor capri ulnaris do?
Ulnar deviation
O=lateral epicondyle of humerus
I=base of 3rd metacarpal
A=wrist extension & assists with radial deviation
Extensor carpi radialis brevis
Where does the extensor carpi radialis longus attach?
Supracondylar ridge
What does the flexor carpi radialis & the extensor carpi radialis longus
Radial deviation
What is a common extensor tendon attachment
Lateral epicondyle
O=long head-supraglenoid tubercle
Short head- coracoid process
I=radial tuberosity
A=assist with shoulder flexion, elbow flexion, &
forearm supinationBiceps brachii
What are the bicep brachii & supinator
Supinators
What joints superior end pivots while the distal end moves around the ulna?
Radioulnar joint
Articulates with the trochlea of the humerus and is also called the semilunar notch
Trochlear notch
O=lateral epicondyle of the humerus
I=lateral & inferior to olecranon process of ulna
A=not a prime mover in any joint action. Used as a
stabilizer in pronation & supination
Anconeous
O=medial epicondyle of humerus
I=palmar fasica
A=assist with wrist flexion (not very strong)
Palmaris longus
What joints proximal ends consists of the radius
& radioulnar disk; and the distal end made of the scaphoid, lunate, triquetrum
Radiocarpal joint
What do the triceps, anconeous, & the wrist extensors do?
Elbow extension
What do the extensor carpi radialis longus, the extensor carpi radialis brevis, & the extensor carpi ulnaris
Wrist extension
What does the flexor carpi radialis & the flexor carpi ulnaris do?
Wrist flexion
It is below the coracoid process and the attachment for the brachialis?
Ulnar tuberosity
Where is the common flexor tendon attachment?
Medial epicondyle
O=long head-infraglenoid tubercle
lateral head- inferior-greater tubercle of posterioir
humerus
medial head-posterior surface of humerus
I= olecranon process of ulna
A=elbow extension
Triceps brachii
What are the 4 basic ligaments of the radiocarpal joint?
Radial collateral ligament
ulna collateral ligament
dorsal radiocarpal ligament
palmar radiocarpal ligamemt
Articulates with the ulna?
Trochlea
What protects the structures of the palms & covers tendons of the extrinsic muscles
Palmar fascia
Where does the transverse carpal ligament attach?
Hook of the hamate
Where does the long head triceps originate?
Infraglenoid tubercle
Where do the collateral ligaments attach?
Styloid process
Articulates with the olecranon process
Olecranon fossa
What keeps the ulna & radius together? And serves as muscle attachment?
Interosseous membrane
What is in between 2 rows of carpal bones?
Midcarpal or intercarpal joint
O=medial epicondyle & coronoid process of ulna
I=lateral aspect of radius at its midpoint
A=pronation & assists with flexion
Pronator teres
What are the 4 proximal carpal bones?
Scaphoid, lunate, triquetrum, & pisiform
What are the 4 distal carpal bones?
Trapezium, trapezoid, capitate, & hamate
Articulates with the radial head?
Capitulum
O=lateral epicondyle of humerus & adjacent ulna
I=anterior surface of proximal radius
A=forearm supination
Supinator
O=distal 1/4 of ulna
I=distal 1/4 of radius
A=forearm pronation
Pronator quadratus
O=medial epicondyle of humerus
I=pisiform & base of 5th metacarpal
A=wrist flexion & ulnar deviation
Flexor carpi ulnaris
What does the pronator quadratus & pronator teres do?
Forearm pronation
Where does the long headed biceps originate?
Supraglenoid tubercle
What does the brachialis, biceps brachii, brachioradialis, & wrist flexors do?
Elbow flexion
What is the longitudinal axis of the humerus & forearm create this angle?
Carrying angle
O=medial epicondyle of humerus
I=base of 2nd & 3rd metacarpals
A=wrist flexion & radial deviation
Flexor carpi radialis
