The three masses of erectile tissue that compose the body of the penis are __________.
a. two slender corpora spongiosa and a cylindrical corpus cavernosum
b. two corpora cavernosa and preputial gland
c. two cylindrical corpora cavernosa and a slender corpus spongiosum
d. periputial glands, a corpus cavernosum, and a corpus spongiosum
Answer: c. two cylindrical corpora cavernosa and a slender corpus spongiosum
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Match the cell type with its description.
1. These are the most abundant leukocyte; they are formed in the bone marrow. 2. Cytotoxic, these cells are associated with allergic reactions and parasitic infestations. Usually these cells are less than 3% of the leukocyte population, and only live up to 12 hours. 3. Precursors of macrophages, these cells are relatively rare in blood because they are actually in transit to some other site. 4. These cells are related to mast cells, and both release chemical mediators such as histamine and heparin, which aid in the immune response. 5. Estimated to reach populations of one trillion in normal adults, most of these cells reside in the lymphoid tissues of the body. These cells look quite similar to one another under the microscope, yet function very differently. A. lymphocytes B. neutrophils C. monocytes D. eosinophils E. basophils
The region of the kidney located outside of the renal medulla is called the renal __________________.
Fill in the blank(s) with the appropriate word(s).
Most neurons are permanent cells, however _____ are neurons that are constantly being replaced
A. olfactory neurons B. basal cells C. cortical neurons D. mitral cells
In addition to the essential and non-essential amino acids required for muscle cell function, what minerals are required?
A. Calcium and potassium B. Magnesium and potassium C. Zinc and iron D. Iron and calcium