The process of spermiogenesis produces
A) spermatogonia.
B) primary spermatocytes.
C) secondary spermatocytes.
D) spermatids.
E) sperm.
E
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Describe changes that occur in older bone tissue. Select all that apply.
a. More lamellar osteons are formed. b. More elastic fibers are deposited. c. Bone becomes more brittle. d. Bone contains less collagen.
A respiratory bronchiole can be distinguished from a terminal bronchiole by ________
A) the loss of cartilage rings that are seen in the terminal bronchioles B) the total loss of smooth muscle in its walls C) the absence of an epithelium lining it D) the alveoli that first appear on the respiratory bronchioles
If plasma levels of ________ were low, excessive cholesterol may be deposited throughout the body tissues, and cardiovascular risk could increase.
A. low-density lipoprotein B. very low-density lipoprotein C. high-density lipoprotein D. medium-density lipoprotein