Cerebrospinal fluid is produced by the ____ and is reabsorbed by the ____
A. choroid plexus, arachnoid granulation
B. arachnoid granulation, choroid plexus
C. dural sinus, dura mater
D. dura mater, dural sinus
E. septa pellucida, cerebral aqueduct
A
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Mr. Martin is suffering from a condition known as ventricular tachycardia, in which his heart beats too quickly. Would an alpha-blocker or a beta-blocker help alleviate his problem? Why?
The "tanning" effect (darkening of the skin) that occurs when a person is exposed to the sun is due to the increased presence of ________
A) melanin B) keratin C) oil D) epidermis dendritic cells E) sweat
Several esophageal branches emerge off of which of the following vessels?
A. Bronchial arteries B. Celiac trunk C. Superior mesenteric artery D. Left gastric artery
Which statement(s) about the functions of the paranasal sinuses is/are not true?
A) They provide an extensive area of mucous epithelium. B) They make skull bones lighter. C) The mucus they secrete enters the oral cavities. D) They support cilia that move the mucus. E) They are located in the sphenoid, ethmoid, frontal, palatine and maxillae.