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Question 1

What happens with damage to spinal segments C8 and T1?

Answer 1

Can cause paralysis of hand muscles.

Question 2

What muscles form the hypothenar eminence?

Answer 2

The hypothenar eminence is formed by the abductor digiti minimi, flexor digiti minimi brevis, and opponens digiti minimi.

Question 3

What is the function of the abductor digiti minimi?

Answer 3

It abducts the 5th finger and helps flex its proximal phalanx.

Question 4

Where does the flexor digiti minimi brevis lie in relation to the abductor digiti minimi?

Answer 4

It lies lateral to the abductor digiti minimi.

Question 5

What action does the flexor digiti minimi brevis perform?

Answer 5

It flexes the proximal phalanx of the 5th finger at the metacarpophalangeal joint.

Question 6

Describe the opponens digiti minimi muscle.

Answer 6

The opponens digiti minimi is a quadrangular muscle that lies deep to the abductor and flexor muscles of the 5th finger.