Practice qs - prepU

Question 1

What nerve or muscle damage results in a winged scapula?

Answer 1

Damage to the long thoracic nerve/serratus anterior which attaches to the medial border of the scapula to hold it down. Damage also results in inability to abduct shoulder beyond the horizontal plane.

LTN runs weirdly superficial for a motor nerve.

Question 2

What is the proper name for tennis elbow?

Answer 2

Lateral epicondylitis

Question 3

What are the contents of the cubital fossa from medial to lateral?

Answer 3

Median nerve, brachial artery, biceps tendon, radial nerve

Question 4

Denticulate ligaments are extensions of the _____ matter.

Answer 4

Pia

Question 5

Wrist drop is a classic example of damage to what nerve?

Answer 5

Radial

Question 6

What structure is damaged in a classic “nursemaids elbow”?

Answer 6

Annular ligament of the radius which holds the radius in the radial notch.

Question 7

What are the fates of neural crest cells.

Answer 7

All autonomic ganglia and dorsal root ganglia plus:

Schwann cells, the arachnoid and pia meningeal layers, the skeletal components of the pharyngeal arches and neurocranium, dentin of the teeth, parafollicular (C) cells in the thyroid gland, adrenal medullary (chromaffin) cells, melanocytes, and cells forming the aorticopulmonary septum in the hear

Question 8

What causes polyhydramnios?

Answer 8

Esophageal atresia (fetus doesnt swallow amniotic fluid so theres more around)

Question 9

What are two causes of oligohydramnios?

Answer 9

Urinary tract obstruction and bilateral kidney agenesis