Which of the following cellular structures locks the terminal webs of neighboring cells to prevent cell distortion and leakage?
A) gap junctions
B) basal lamina
C) tight junctions
D) desmosomes
E) adhesion belt
Answer: D
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Which term describes the study of the functions of body structures?
a) anatomy b) physiology c) endocrinology d) histology e) immunology
Which of the following symptoms would be apparent in a patient who lacks angiotensin-converting enzyme?
A) Increased levels of Angiotensin II B) Decreased blood pressure C) Increased thirst D) Decreased thirst
Which of the following statements regarding intrinsic regulation of the heart is true?
A. If cardiac muscle cells are slightly stretched, they have a stronger contraction force. B. The heart's pumping effectiveness is greatly influenced by small changes in afterload. C. Stretching the SA node will decrease generation of action potentials in the node. D. If cardiac muscle cells are slightly stretched, they have a weaker contraction force. E. Decreased venous return increases cardiac output.
What is the meaning of autoimmunity??
A) ?A mother passes her antibodies to her unborn child. B) ?An individual is naturally immune to many common diseases. C) ?Immunity has been acquired through vaccines. D) ?The immune system mistakenly targets normal body cells.