In arteries, the thickest layer of the wall is the
A. tunica adventitia.
B. tunica intima.
C. tunica externa.
D. tunica media.
E. None of the answers are correct because all the layers are of the same dimension.
Answer: D
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Match the type of cell junction with the best description. Answers may be used once, more than once, or not at all
1. simplest cell-cell junction 2. contributes to the blood-brain barrier 3. can be cell-matrix junctions 4. their loss is characteristic of cancer A. gap junction B. tight junction C. anchoring junction
What is the difference between the anatomy of the cranial nerves and that of the spinal nerves?
A) In cranial nerves, hollow cavities are empty; in spinal nerves, hollow cavities contain cerebrospinal fluid. B) In cranial nerves, damage is always fatal; in spinal nerves, damage can be healed. C) In cranial nerves, the right and left sides act independently; in spinal nerves, movement is connected. D) In cranial nerves, the white matter is surrounded by the gray matter; in spinal nerves, it is the other way around.
Water and NaCl reabsorbed from the loop of Henle directly reenter which blood vessels?
A. Collecting ducts B. Efferent arterioles C. Vasa recta D. Cortical peritubular capillaries E. Afferent arterioles
The tendons of the abductor pollicis longus and the two extensor pollicis muscles border which of the following?
A. The anatomical snuffbox B. The popliteal fossa C. The cubital fossa D. The carpal tunnel E. The axilla