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Exam 6 A&P

Origin-Insertion-Action-Innervation of Hand

QuestionAnswer
Origin of Flexor pollicis brevis flexor retinaculum and tubercles of trapezium and scaphoind bones
Insertion of Flexor pollicis brevis base of the proximal phalanx of the thumb
Action of Flexor pollicis brevis thumb flexion (bending)
Innervation of Flexor pollicis brevis recurrent branch of the median nerve (superficial head) and deep branch of ulnar head (deep head)
Origin of Abductor pollicis brevis flexor retinaculum and tubercles of trapezium and scaphoind bones
Insertion of Abductor pollicis brevis base of the proximal phalanx of the thumb
Action of Abductor pollicis brevis thumb abduction (moving away from the hand
Innervation of Abductor pollicis brevis recurrent branch of the median nerve
Origin of opponens pollicis Flexor retinaculum and tubercle of trapezium and scaphoid bones
Insertion of opponens pollicis first metacarpal bone
Action of opponens pollicis Recurrent branch of the median nerve
Innervation of opponens pollicis Thumb flexion, abduction, and medial rotation resulting in a combined movement called opposition
Thenar eminence consist of what three muscles flexor pollicis brevis, abductor pollicis brevis, and the opponens pollicis
Origin of abductor digit minimi Pisiform
Insertion of abductor digit minimi Base of proximal phalanx of 5th digit
Action of abductor digit minimi Abduction of the 5th digit and flexion assistance of the proximal phalanx
Innervation of abductor digit minimi Deep branch of ulnar nerve
Origin of flexor digiti minimi Hook of hamate and flexor retinaculum
Insertion of flexor digiti minimi Base of the proximal phalanx of the 5th digit
Action of flexor digiti minimi Flexion of the proximal phalanx of the 5th digit
Innervation of flexor digiti minimi Deep branch of ulnar nerve
mnemonic for the Thenar eminence muscles: APB is A Friend Of Police Abductor pollicis brevis Adductor pollicis Flexor pollicis brevis Opponens Pollicis
Hypothenar eminence muscles consists of? flexor digiti minimi brevis, the abductor digiti minimi brevis, and the opponens digiti minimi
Origin of the hypothenar Hook of hamate and flexor retinaculum
Insertion of the hypothenar Medial border of 5th metacarpal
Action of the hypothenar Opposition of the 5th digit
Innervation of the hypothenar Deep branch of ulnar nerve
Origin of the interossei Sides of two adjacent metacarpals (dorsal interossei) and palmar surfaces of the 2nd, 4th, 5th metacarpals (palmar interossei)
Insertion of the interossei Bases of the proximal phalanges via the extensor expansions of the 2nd to 4th digits (dorsal interossei) and 2nd, 4th, and 5th digits (palmar interossei)
Action of the interossei Abduction of the 2nd to 4th digits (dorsal interossei), adduction of the 2nd, 4th, and 5th digits (palmar interossei), assisting the lumbricals in extension
Innervation of the interossei Deep branch of ulnar nerve
Interossei grouped into? four dorsal and three palmar interossei and are part of the midpalmar group.
palmar interossei are: unipennate
dorsal interossei are: bipennate
actions of the interossei is to use the following mnemonic PAD DAB ('Use your hand to dab with a pad') Palmar interossei - ADduct Dorsal interossei - ABduct
Origin of Lumbricals Tendons of the flexor digitorum profundus
Insertion of Lumbricals Lateral expansions of the 2nd to 5th digits
Action of Lumbricals Flexion of the metacarpophalangeal joints and extension of the interphalangeal joints of the 2nd to 4th digits
Innervation of Lumbricals Median nerve (1st and 2nd lumbricals), deep branch of ulnar nerve (3rd and 4th lumbricals) Mnemonic: '1 2 me, 3 4 u'
mnemonic to help you remember the innervation of the lumbricals '1 2 me, 3 4 u' (One to me, three for you) First and second lumbricals: median nerve Third and fourth lumbricals: ulnar nerve
Created by: JML19
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