Adductor and Central Muscles of Hand

Question 1

Adductor Pollicis Brevis

Answer 1

Inn: deep branch of Ulnar N.

BS: palmar arches (superficial/ deep)

A: adduct thumbtowards middle digit

Question 2

Lumbricals 1&2

Answer 2

Inn: Median N

BS: palmar arches

A: flex at MCP joints; extend at IP joints

Question 3

Lumbricals 3 & 4

Answer 3

Inn: Deep branch of Ulnar N

BS: palmar arches (superficial/ deep)

A: flex at MCP joints; extend at IP joints

Question 4

Palmar Interossei (PAD 3)

Answer 4

Inn: Deep branch of Ulnar N

BS: Deep palmar arch

A: Adduct digits 2, 4 &5 and assist lumbricals

Question 5

Dorsal Interossei (DAB 4)

Answer 5

Inn: Deep branch of Ulnar N

BS: deep palmar & dorsal carpal arches

A: abduct digits 2, 3, 3 &4; assist lumbricals