The Hand

Question 1

What is the action of the opponens pollicus?

Answer 1

Opposes the thumb

Question 2

What is the orginin aand insertion of the opponens pollicus?

Answer 2

Originin;tubercle of trapezium, insertion, the lateral margin of the metacarpal of the thumb.

Question 3

What is the action of the abductor pollicus brevis?

Answer 3

Abducts the thumb

Question 4

What is the origin and insertion of the abductor Pollicus Brevis?

Answer 4

Orginin, tubercules of the scaphoid and trapezium, insertion, …….

Question 5

What is the action of the flexor pollicus brevis?

Answer 5

Flexes MCP joint of the thumb

Question 6

What is the origin and insertion of the flexor pollicus brevis?

Answer 6

Origin+tubercules of trapezium and insertion base of the proximal phalengeal joint of thumb

Question 7

What is the action of the adductor pollcius oblique?

Answer 7

Adduction of the cearpometocarapl join of the thumb.

Question 8

What is the orgin and insertion of the adductor Polllicus Oblique?

Answer 8

Origin= captate bone, bases of 2nd and 3rd metacarpals, insertion is the base of the proximal pharynx of the 1st digit

Question 9

what is the action of the adductor pollics transverse?

Answer 9

Adduction of the crpometacpro joint and flexion.

Question 10

What is the origin and insertion of the adductor pollciuse transverse?

Answer 10

Origin shaft of the palmar surface of the 3rd metacarpal insertion are the bases of the proximal phalynx of the 1st digit.

Question 11

What nerve innverates the opponens pollicus, the adductor pollicu Brevis, and the flexor pollicus Brevis?

Answer 11

The median nerve

Question 12

Which muscles in the hand are innervated by the ulnar nerve?

Answer 12

Adductor pollicus transverse, the adductor pollicus oblque, Opponens digiti minimi, flexor digit minimi brevis, adductor digit mini, the dorsal interossi, the palmar interossi, and the medial two lumbricals

Question 13

What is the Orginin and insertion of the Opponens digiti minnmi?

Answer 13

Orgin=hook of hamate, insertion= medial margin of metacarpal 5

Question 14

What are the actions of the opponens digit minim?

Answer 14

Rotates metacarpal of little finger towards palm producing opposition

Question 15

What is the orgin and insertion of the felxor digiti minimi brevis=

Answer 15

Orgin= hook of hamate, insertion, base of the proximal phlaynx

Question 16

What are the muscles found in the thenar emience?

Answer 16

The opponents pollicus, the Adductor pollicis brevis, the flexor pollicus brevis (and possibly the adductor pollicus oblique and the adductor pollicus transverse)

Question 17

What are the actions of the flexor digit mininmi brevis?

Answer 17

Flexes the MCP joint of the little finger

Question 18

What is the orgin and insertion of the abductor digiti minimi?

Answer 18

Origin= pisiform and the tendon of the flexor carpi ulnaris, and the insertion is the proximal phalynx of the little finger

Question 19

What are the origins and insertions of the lumbricals?

Answer 19

Tendon of flexor digitorum profundus, insertions are the extensor hoods

Question 20

How are the lumbricals innervated?/

Answer 20

Medial two lumbricals= ulnar nerve, whereas the lateral two lumbircals are innervated by the median nerve

Question 21

What is the actions of the lumbircals?

Answer 21

Tney flex at the MCP joint and extend at the IP joints

Question 22

What are the origin and insertions of the dorsal interossei?

Answer 22

Origin= lateral and medial surfaces of the metacarpals, and insert into the extensor hood of the proximal phaylnx

Question 23

What are the actions of the dorsal interossei?

Answer 23

Abduct fingers at the MCP joint

Question 24

What are the actions of the palmar interossi?

Answer 24

adduct the fingers at the MCP joint

Question 25

What are the orgins and insertions of the palmar interossei?

Answer 25

Orignin is the medial or lateral surface of the metacarals, and inserts into the exxtensor hood or the proximal phalynx

Question 26

What are the main structures involved in the blood supply to the hand?

Answer 26

The radial atery and the ulnar artery, the superficial palmar arch and the deep palmar arch and the common digital arteries

Question 27

What are the three nerves involved in innervating the hand?

Answer 27

The ulnar nerve, the median nerve and the superficial branch of the radial nerve

Question 28

What muscles are paralysed in hand of benediction?

Answer 28

The lateral two lumbricals meaning that you cannot flex at the MCPs

Question 29

What causes carpal tunnel syndrome?

Answer 29

Compression of the median nerve as it runs through the carpal tunnel

Question 30

What are the contents of the carpal tunnel?

Answer 30

4 tendons of the flexorr digitorm profundus, 4 tendons of the flexor digitorum superificalis, and the tendon of the flexor Pollicus longus. The median nerve also rund through the carpal tunnel

Question 31

What muscles of the hand are paralysed by a ulnar nerve injury?

Answer 31

The interossi are paralysedm and movement of the little finfer are reduced.

Question 32

What is a condition caused by prolonged ulnar nerve injury?

Answer 32

Ulnar claw