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