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Hand Muscles

QuestionAnswer
What fills gaps between bones? Superficial transverse metacarpal ligaments.
Is the palmer skin bound tightly to the palmer apenerousis? Yes, helps with grip.
An osseofibrous canal formed by the carpal bones and the flexor retintatulum. Carpal Tunnel
Just prior to entering the carpal tunnel, the flexor tendons are surrounded by ____ _____ _____ ____? Common tendon flexor sheath
What usually has its own flexor sheath? Flexor pollisis longus
Where are the digital tendon sheaths locate? On the phalanges
What are the 4 intrinsic muscles of the hand? 1.) Thenar muscles 2.) Hypothenar muscles 3.) Lumborical muscles 4.) Interossei muscles
What are the 4 thenar muscles? 1.) Abductor pollicis brevis 2.) Flexor pollicis brevis 3.) Opponens pollicis 4.) Adductos Pollices
The muscles acting on thumb are _____ Muscles? Thenar muscles
Nerve of Abductor pollicis brevis? Recurrent branch of median nerve
Nerve of Flexor pollicis brevis? (Superficial head and deep head) Superficial= (cant read the word..Recurrent, remnants?) of median nerve
Nerve of opponens pollicis Ulnar nerve
nerve of Adductor pollicis Ulnar nerve
What are the 4 hypothenar muscles? 1.) Palmaris Brevis 2.) Abductor digiti minimi 3.) Opponens digiti minini
What innervates the all hypothenar muscles? Ulnar nerve
Origin of Palmaris brevis. From medial aspect of flexor retinaculum and palmer apenerousis
Insertion of Palmaris Brevis. Into skin along medial side of palm
Action of palmaris brevis. Pulls skin along medial aspect of palm laterally thus deepening the hollow of the hand.
What 2 hypothenar muscles originate at the flexor retinaculum and the hook of the hamate carpal bone? -Flexor digiti minimi -Opponens digiti minimi
Where does the abductor digiti minimi originate? Pisiform carpal bone
Which 2 hypothenar muscles insert at the base of proximal phalanx of little (5th) finger? -Flexor digiti minimi -Abductor digiti minimi (ulnar side)
Where does the opponens digiti minimi insert? Ulnar border 5th metacarpal
Actions of hand muscles do what their names say they do so don't be dumb.
What are the 4 lumborical muscles? 2 lateral and 2 medial
nerve of lateral lumboricals? Median nerve
nerve of medial lumboricals? Ulnar nerve
Origin of lumboricals. Tendons of flexor digitorum brevis
Insertion of lumboricals. Extensors expansion
Action of lumboricals Flex at MP joint and extension at DIP and HIP joints
What is the deepest intrinsic muscles of the hand? Interossei muscles
What are the 7 interossei muscles? -Palmer Interossei (3) -Dorsal Interossei (4)
Action of Palmer interossei -Adduction of 2nd, 4th, 5th digits -Assists lumboricals
Action of Dorsal interossei Abduction 2,3,and 4th digits
Created by: Nick Larson Nick Larson on 2012-11-05



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