Q46 Intrinsic Muscles of the Hand

Question 1

Name the groups of intermediate intrinsic muscles of the hand

Answer 1

Lumbricals, Palmer Interossei and Dorsal Interossei

Question 2

State the number of muscles in each group

Answer 2

There are 4 muscles of each of the intrinsic muscle groups

Question 3

Give the position of the Lumbricle muscles

Answer 3

In palm of hand between tendons of Flexor Digitorum Profundus muscle

Question 4

Give the action of the Lumbrical muscles

Answer 4

Flexion of the Metacarpophalangeal joints and extension of the Interphalangeal joints

Question 5

Name 2 functional activities in which the intermediate intrinsic muscles of the hand are important

Answer 5

Gripping and fine movements e.g. writing, musical instruments and complex movements