Hand muscles Flashcards
What is the action of the adductor pollicis?
Adduct thumb
What is the blood supply of the adductor pollicis?
Deep palmar arch
What is the innervation of the adductor pollicis?
Ulnar nerve
What are the attachments of the adductor pollicis?
Transverse head= 3rd metacarpal
Oblique head= 2nd and 3rdmetacarpal, trapezoid and capitate bones
Base of proximal phalanx of thumb and ulnar sesamoid
What is the action of the thenar eminence?
Control thumb
What is the blood supply of the thenar eminence?
Superficial palmar arch
What is the innervation of the thenar eminence?
Median nerve
How many muscles make up the thenar eminence?
3
What is the action of the hypothenar eminence?
Control pinkie
What is the blood supply of the hypothenar eminence?
Ulnar artery
What is the innervation if the hypothenar muscles?
Ulnar nerve
What are the attachments of the hypothenar muscles?
5th metacarpal
Proximal phalanx
What is the function of the dorsal interossei?
Abduct fingers
What is the blood supply of the dorsal interossei?
Dorsal and palmar metacarpal arteries
What is the innervation of the dorsal interossei?
Ulnar nerve
What are the attachments of the dorsal interossei?
Metacarpals
Proximal phalanges and extensor expansions
What is the action of the palma interossei?
Adduct fingers
What is the blood supply of the palmar interossei?
Deep palmar arch
What is the innervation of the palmar interossei?
Ulnar nerve
What are the attachments of the palmar interossei?
Sides of metacarpals
Bases of proximal phalanges, extensor expansions
What are the actions of the 1st and 2nd lumbricals?
Flex MCP joint
Extend IP joint
What is the blood supply of the 1st and 2nd lumbricals?
Palmar arches, arteries and dorsal digital artery
What is the innervation of the 1st and 2nd lumbricals?
Median nerve
What are the attachments of the 1st and 2nd lumbricals?
Flexor digitorum profundus
Extensor expansion
