Large clusters of lymph nodes occur in all of the following locations except the ________.
A) inguinal region
B) cervical region
C) axillary region
D) lower extremities
D) lower extremities
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Olfactory receptors send axons through the cribriform plate and synapse on neurons in the
A) medulla. B) thalamus. C) cerebral cortex. D) olfactory bulb. E) olfactory tract.
Select the correct statement regarding multicellular exocrine glands.
A) Compound glands are so called because they are constructed from more than one cell type. B) The secretory cells of holocrine glands release their product by rupturing. C) Exocrine glands always lack ducts. D) Merocrine glands release their secretion by pinching off part of the cell.
The superior orbital fissure is formed in the sphenoid bone, whereas the inferior orbital fissure is formed between the sphenoid and ________.
A) maxilla B) zygomatic C) ethmoid D) lacrimal
An erection of the penis is caused by
A. increased secretions of lymph into the spongy tissue. B. muscle flexion of the penile muscles. C. blood filling the erectile bodies and compressing the veins. D. semen pressure from the testes and ductus deferens. E. ejaculatory muscles.