What is the functional significance of gap junctions?
A) They form a barrier that isolates the basolateral surfaces from deeper tissues.
B) They attach the deepest epithelial cells to the basement membrane.
C) They provide firm attachments between neighboring cells.
D) They strengthen the apical region and prevent leakage.
E) They permit chemical communication (diffusion of ions and small molecules) that coordinates the activities of adjacent cells.
Answer: E
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The tissues of the spleen are called
A. red and white pulp. B. tonsils and Peyer's patches. C. cellular and fibrous. D. black and blue pulp.
Carbonic anhydrase is located where?
A) principal cells basolateral membrane B) intercalated cells basolateral membrane C) proximal tubule apical membrane D) proximal tubule basolateral membrane E) principal cells apical membrane
What does NOT contribute to the formation of the respiratory membrane?
A) capillary endothelial cells B) type II alveolar cells C) type I alveolar cells D) basal lamina of the type I alveolar cells
Any two EPSPs will override one IPSP.
Answer the following statement true (T) or false (F)