Following a primary immune response, the cells that give rise to memory cells are
A) both B cells and T cells. B) B cells only.
C) T cells only. D) neither B cells nor T cells.
A
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What is the normal, programmed death of cells that have completed their function called?
A. Necrosis B. Hypoplasia C. Apoptosis D. Atrophy E. Autophagy
The secretory phase of the uterine cycle coincides with
A. ovulation. B. the luteal phase of the ovarian cycle. C. menstruation. D. the follicular phase of the ovarian cycle. E. proliferation.
Which type of connective tissue is characterized by a liquid extracellular matrix?
A. Blood B. Irregular dense connective tissue C. Adipose D. Bone
What is the significance of the "C-shaped" cartilages that reinforce the tracheal rings?
A) The incomplete portion of the C-shaped cartilages are located at the posterior of the tracheal cartilages, to permit the esophagus to bulge anteriorly into the tracheal lumen in transient fashion to permit a large bolus to pass. B) The open region permits passage of the nerves that stimulate the muscles of the laryngeal region. C) They form a solid cartilaginous tube. D) These cartilages hold the trachea rigidly open at the same diameter at all times. E) None of the answers are correct.