When intestinal chyme is highly concentrated,
A. water moves by exocytosis from interstitial spaces into the stomach.
B. water moves by osmosis into the lumen of the small intestine.
C. water moves by endocytosis from intestinal lumen into interstitial spaces.
D. water does not move.
E. water moves by osmosis from the intestinal lumen into the blood.
Answer: B
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The pharyngoesophageal sphincter is normally closed to prevent
a. air from entering the esophagus during breathing b. gastric contents from refluxing back into the esophagus c. vomiting d. esophageal secretions from leaking into the stomach e. food from entering the pharynx
The hyoid bone:
A) articulates with the temporal bone at the temporomandibular joint. B) is anatomically attached to the skull and supports the vocal cords. C) floats in the superior aspect of the neck just below the mandible. D) is a hollowed section of bone that provides resonance for the voice
Cocaine is a(n) ________ drug, meaning that it promotes sympathetic nerve effects.
A. cholinergic B. adrenergic C. parasympathomimetic D. sympathomimetic
Describe CD markers
A) T cell plasma membranes contain cluster of differentiation (CD) proteins involved in antigen recognition. B) B cell plasma membranes contain cluster of differentiation (CD) proteins involved in antigen recognition. C) NK cell plasma membranes contain cluster of differentiation (CD) proteins involved in antigen recognition. D) T cells contain cloning and division (CD) proteins in the cytoplasm to allow them to activate and clone after an exposure to an antigen. E) B cells contain cloning and division (CD) proteins in the cytoplasm to allow them to activate and clone after an exposure to an antigen.