A Congenital Defect in the Immune System of a 2-Week-Old

question 46

Multiple Choice

A congenital defect in the immune system of a 2-week-old infant may be suspected if

• A)there are small, palpable inguinal nodes.
• B)the umbilical cord has not yet dropped off.
• C)the tonsils are visible.
• D)the thymus is visible on a chest radiograph.
• E)the small postauricular nodes are palpable.

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Definitions:

Superior Vena Cava

A large vein that carries deoxygenated blood from the upper half of the body to the heart.

Inferior Vena Cava

The large vein that carries deoxygenated blood from the lower and middle body into the right atrium of the heart.

Pulmonary Artery

The blood vessel that transports blood lacking oxygen from the heart's right ventricle to the lungs to receive oxygen.

Left Ventricle

The chamber within the heart that pumps oxygenated blood out into the systemic circulation throughout the body.