By which process do the fatty acids and monoglycerides of micelles cross the enterocyte cell membranes?
A) Active transport
B) Diffusion
C) Pinocytosis
D) Phagocytosis
Answer: B
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Tissue responses to neurotransmitters
A) are always excitatory. B) vary depending upon the response of the membrane receptor to the presence of the neurotransmitter. C) result from the formation of second messengers. D) are always inhibitory. E) result from opening ion channels.
Which of the following responses to a fall in arterial pressure accounts for the ability of the kidneys to autoregulate GFR?
A. decreased resistance of the efferent arteriole B. increased delivery of fluid to the end of the proximal tubule C. increase resistance of the afferent arteriole D. increased [NaCl] in tubular fluid at the macula densa E. decreased resistance of the afferent arteriole
Cells of the conducting system in the heart are more sensitive to which ion?
A. Sodium B. Potassium C. Iron D. Chloride
The ____ muscle raises your eyebrows and wrinkles the skin of your forehead
a. occipitalis b. frontalis c. zygomaticus d. buccinators