1What is the action of palmaris brevis?
draws skin toward middle of palm
2What is the innervation of palmaris brevis?
superficial branch of ulnar nerve (C8-T1)
3What is the action of abductor pollicis brevis?
abducts 1st digit at CMC and MCP joints
4What is the innervation of abductor pollicis brevis?
recurrent branch of median nerve (C8-T1)
5What is the action of abductor digiti minimi?
abducts 5th digit at MCP joint
6What is the innervation of abductor digiti minimi?
deep branch of ulnar nerve (C8-T1)
7What is the action of opponens pollicis?
opposition of the 1st digit at the CMC joint
8What is the innervation of opponens pollicis?
recurrent branch of median nerve (C8-T1)
9What is the action of flexor digiti minimi?
flexes 5th digit at MCP joint
10What is the innervation of flexor digiti minimi?
deep branch of ulnar nerve (C8-T1)
11What is the action of lumbricals?
flexes digits 2-5 at MCP joints and extends digits 2-5 at IP joints
12What is the innervation of the 1st and 2nd lumbricals?
median nerve
13What is the innervation of the 3rd and 4th lumbricals?
deep branch of ulnar nerve (C8-T1)
14What is the action of flexor pollicis brevis?
flexes the 1st digit at the CMC and MCP joints
15What is the innervation of flexor pollicis brevis?
recurrent branch of median nerve (C8-T1)
16What is the action of opponens digiti minimi?
opposition of 5th digit at CMC joint
17What is the innervation of opponens digiti minimi?
deep branch of ulnar nerve (C8-T1)
18What is the action of adductor pollicis?
adducts 1st digit at the CMC joint and assists with flexion at MCP and CMC joint of 1st digit
19What is the innervation of adductor pollicis?
deep branch of ulnar nerve (C8-T1)
20What is the action of palmar interossei?
adducts digits 2, 4, 5 at MCP joints and assist lumbricals in flexion at MCP joints and extension at IP joints
21What is the innervation of palmar interossei?
deep branch of ulnar nerve (C8-T1)
22What is the action of dorsal interossei?
abducts digits 2, 3, 4 at MCP joints and assist lumbricals in flexion at MCP joints and extension at IP joints
23What is the innervation of dorsal interossei?
deep branch of ulnar nerve (C8-T1)