________ results from an insufficient production of surfactant in the pulmonary alveoli, leading to alveolar collapse.
A. Asthma
B. Infant respiratory distress syndrome
C. Pneumothorax
D. Emphysema
Answer: B
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The _______________ of the kidney is the inner layer, while the _______________ is the outer layer surrounding it.
a) cortex; medulla b) medulla; cortex
The diameter of a field is 1.8 mm. An object viewed in the field takes up approximately one-half of the field. The estimated length of the object is __________.
a. 0.2 mm b. 0.9 mm c. 2.0 mm d. 9.0 mm
The muscles of photopupillary reflex are innervated by the ________ nerve.
A. oculomotor B. trochlear C. optic D. facial E. abducens
Which is not correct regarding lymph nodes?
A. They contain macrophages. B. They filter lymph. C. They are drained by efferent lymphatic vessels. D. They contain strands of lymphatic cells supported by medullary cords. E. No exceptions; all are true of lymph nodes.