The figure illustrates a detailed drawing of the neuromuscular junction. What does "E" represent?
A. Synaptic vesicles
B. Sarcolemma
C. Presynaptic terminal
D. Postsynaptic membrane
E. Synaptic cleft
Answer: D
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Some of the least permeable capillaries are found in the ________, while some of the most permeable capillaries are found in the _________.
A. kidney; brain B. intestine; muscles C. bone marrow; brain D. brain; bone marrow
Olfactory receptor cells, sensory receptors for olfaction, are located ________
A) in the olfactory epithelium B) in the semicircular canals C) in the cochlear duct D) in structures called papillae
The most prevalent antibody in blood and lymph is
A. IgA. B. IgC. C. IgD. D. IgE. E. IgG.
What are the most important factors influencing hair growth?
A) sex and hormones B) age and glandular products C) the size and number of hair follicles D) nutrition and hormones