Week 5 Stuff Flashcards
List the muscles of the thenar eminence and the general location in the hand.
Abductor pollicis brevis, flexor pollicis brevis, opponens pollicis, adductor pollicis. Radial side of palm
List the muscles of the hypothenar eminence and the general location in the hand.
Abductor digiti minimi, flexor digiti minimi brevis, opponens digiti minimi. Ulnar side of palm
How many palmar interossei muscles are there?
3
How may dorsal interossei muscles are there?
4
The median nerve innervates all the thenar eminence muscles except which?
Adductor pollicis
The ulnar nerve innervates all the _______________________eminence muscles.
hypothenar
The palmar interossei muscles perform [3] ____________ at the ___________________joints of digits________________.
adduction, metacarpophalangeal, 2, 4 and 5
The dorsal interossei muscles perform [3] __________________ at the____________________joints of digits______________.
abduction, metacarpophalangeal, 2, 3 and 4
What is the innervation of the lumbricals?
Median nerve to lumbricals 1 and 2. Ulnar nerve to lumbricals 3 and 4
What is the primary action of the lumbricals at which digits?
Flexion at metacarpophalangeal joint of digits 2-5. Extension at proximal and distal interphalangeal joints of digits 2-5
Name the movements at the elbow joint.
Flexion and extension
Name the articulations that make up the traditional elbow joint.
- Trochlea of humerus articulates with trochlear notch of the ulna.
- Capitulum of humerus articulates with the head of the radius
Name the movements of the radioulnar joint.
Supination, pronation
Name the articulation that makes up the proximal radioulnar joint.
Head of the radius articulates with the radial notch of the ulna
Which bones form the proximal row of carpals?
Scaphoid, lunate, triquetrum, pisiform
Which bones form the distal row of carpals?
Trapezium, trapezoid, capitate, hamate
Which muscle attaches to the olecranon process?
Triceps brachii, flexor carpi ulnaris
The head of the ulna is on the proximal or distal end of the ulna?
distal
What is the distal attachment of brachioradialis?
Lateral side of the distal end of the radius
Which carpal bone articulates with the 1st metacarpal?
trapezium
What is the anatomical term for the knuckle joint?
Metacarpophalangeal joint
Which muscle flexes the elbow and is deep to the biceps brachii?
Brachialis
Which muscle flexes the elbow in radioulnar joint neutral?
Brachioradialis
What is the distal attachment of abductor pollicis longus?
Base of metacarpal 1
What is the distal attachment of flexor carpi radialis?
Base of metacarpal 2
What is the distal attachment of flexor carpi ulnaris?
Base of metacarpal 5, pisiform, and hook of hamate
What is the distal attachment of extensor carpi radialis longus?
Base of metacarpal 2, dorsal surface
What is the distal attachment of extensor carpi radialis brevis?
Base of metacarpal 3, dorsal surface
What is the distal attachment of extensor carpi ulnaris?
Base of metacarpal 5, dorsal surface
Name the superficial muscles of the anterior forearm.
Flexor carpi radialis, palmaris longus, flexor digitorum superficialis, flexor carpi ulnaris
Name the deep muscles of the anterior forearm.
Flexor pollicis longus, flexor digitorum profundus
Which tendons form the anatomical snuffbox?
Abductor pollicis longus, extensor pollicis brevis, extensor pollicis longus
The tendon of which muscle courses around the dorsal tubercle?
Extensor pollicis longus
The tendons of which muscle split to attach to the sides of the middle phalanges of digits 2-5?
Flexor digitorum superficialis
Which muscles extend digit 1 at the CMC joint?
Extensor pollicis longus, extensor pollicis brevis, abductor pollicis longus
