Hydrocephaly is a condition whereby cerebrospinal fluid accumulates around the brain. Which supportive cells continue CSF production despite it backing up in the subarachnoid space?
A. Oligodendrocytes
B. Macrophages
C. Ependymal cells
D. Astrocytes
E. Microglia
Answer: C
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Which abdominal wall muscle originates on the iliac crest and the lower lumbar vertebrae?
A. rectus abdominis B. external abdominal oblique C. internal abdominal oblique D. transversus abdominis E. quadratus lumborum
Calcitonin
A. promotes the absorption of calcium from the gastrointestinal tract. B. promotes osteoclast activity in the bones. C. reduces calcium excretion by the kidneys. D. reduces extracellular calcium ion levels. E. increases blood calcium levels.
Which of the following is NOT an enzyme given to someone experiencing a myocardial infarction to break up blood clots?
A. streptokinase B. tissue plasminogen activator (t-Pa) C. nitroglycerin D. urokinase
Another name for the pinna of the external ear is the ________.
A. external auditory meatus B. ear drum C. tympanic membrane D. auricle