Anatomy

Question 1

What is the origin of the brachial plexus?

Answer 1

C5-T1

Question 2

What causes Erb-Duchenne paralysis?

Answer 2

Damage to brachial plexus root C5-6

Question 3

How does Erb-Duchenne paralysis present?

Answer 3

Winged scapula

Question 4

What causes Klumpke’s paralysis?

Answer 4

Damage to T1

Question 5

How does Klumpke’s paralysis present?

Answer 5

Loss of intrinsic hand muscles

Question 6

What are the lateral wall components of the cavernous sinus?

Answer 6

Oculomotor nerve
Trochlear neve
Ophthalmic nerve
Maxillary nerve

Question 7

What are the contents of the cavernous sinus?

Answer 7

Internal carotid artery

Abducens nerve

Question 8

What nerve divides to form the tibial and common peroneal nerves?

Answer 8

Sciatic nerve

Question 9

Where does injury to the common peroneal nerve usually occur?

Answer 9

Neck of the fibula

Question 10

What are the features of a common peroneal nerve lesion?

Answer 10

Foot drop

Weakness of foot dorsiflexion and eversion

Weakness of extensor hallucis longus

Sensory loss over the dorsum of the foot and the lower lateral part of the leg

Wasting of the anterior tibial and peroneal muscles.