This figure shows different types of intercellular junctions. Note the connexons associated with the junction indicated by number 2. What type of junction is this?
A. Desmosome
B. Adhering junction
C. Tight junction
D. Gap junction
Answer: D
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The first recognizable feature of the cardiovascular system is (the)
A) heartbeat at birth. B) formation of blood cells in the liver. C) heartbeat at five months. D) development of the aorta at two months. E) None of the answers are correct
If the potassium leak channels were suddenly blocked in a resting neuron, what would happen to its resting membrane potential?
A. It would become more negative. B. It would become more positive. C. The RMP would be unaffected. D. It would hyperpolarize.
What is the largest leukocyte that contains small cytoplasmic granules and typically a kidney- or horseshoe-shaped nucleus?
A. Lymphocyte B. Neutrophil C. Monocyte D. Basophil E. Eosinophil
Hypersecretion of human growth hormone during childhood results in
a) giantism. b) acromegaly. c) dwarfism. d) rickets. e) no apparent effect.