3.4.3. Adductor Muscle Compartment

Question 1

What are the 2 Groups, which the Muscles that act on the Hand, can be Divided into?

Answer 1

1. Extrinsic Muscles

2. Intrinsic Muscles

Question 2

Where are the Extrinsic Muscles of the Hand located?

Answer 2

1. Anterior Compartment of the Forearm

2. Posterior Compartment of the Forearm

Question 3

What are the functions of the Extrinsic Muscles of the Hand?

Answer 3

1. Control Crude Movements

2. Produce a Forceful Grip

Question 4

Where are the Intrinsic Muscles of the Hand located?

Answer 4

Within the Hand itself

Question 5

What is the function of the Intrinsic Muscles of the Hand?

Answer 5

Fine Motor Control of the Hand

Question 6

What are the 5 Muscle Compartments, of the Intrinsic Muscles of the Hand?

Answer 6

1. Thenar Muscle Compartment
2. Hypothenar Muscle Compartment
3. Adductor Compartment
4. Lumbricals and Long Flexor Tendons (Central) Compartment
5. Interossei Compartment

Question 7

How many Muscles are in the Adductor Muscle Compartment?

Answer 7

1

Question 8

What is the name of the Muscle in the Adductor Muscle Compartment?

Answer 8

Adductor Pollicis

Question 9

How is the Adductor Pollicis described?

Answer 9

A Large, Triangular Muscle

Question 10

How many Heads does the Adductor Pollicis have?

Answer 10

2

Question 11

1. What passes Anteriorly, in the Space Between the 2 Heads of the Adductor Pollicis?
2. What does this form?

Answer 11

1. Radial Artery

2. Deep Palmar Arch

Question 12

Where does the Adductor Pollicis Originate from?

Answer 12

1. One Head Originates from the Third Metacarpal
2. One Head Originates from:
   a) Capitate
   b) Adjacent Areas of the Second and Third Metacarpals

Question 13

Where does the Adductor Pollicis attach distally?

Answer 13

Base of the Proximal Phalanx of the Thumb

Question 14

What is the function of the Adductor Pollicis?

Answer 14

Adduction of the Thumb

Question 15

What innervates the Adductor Pollicis?

Answer 15

Deep Branch of the Ulnar Nerve