In which segment of the nephron would you find cuboidal cells with many microvilli and mitochondria?
A) proximal convoluted tubule B) glomerulus
C) nephron loop (thin segment) D) distal convoluted tubule
Answer: A
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The function of helper T-lymphocytes is to
A. initiate and oversee the immune response. B. turn off the immune response once it has been activated. C. secrete toxins to kill or disable pathogens. D. trigger cell death by disrupting metabolic activities. E. All choices are correct.
A stimulus that is too weak to depolarize the membrane to threshold produces an action potential that is weaker than normal
Indicate whether the statement is true or false
What are the differences between gross anatomy and microscopic anatomy?
A) Gross anatomy involves the study of tissues; microscopic anatomy involves the study of cells. B) Gross anatomy involves the study of cells; microscopic anatomy involves the study of tissues. C) Gross anatomy involves the study of body structures that can be seen with the unaided eye; microscopic anatomy is the study of body structures that cannot be seen without magnification. D) Gross anatomy is the study of body structures that cannot be seen without magnification; microscopic anatomy is the study of body structures that can be seen with the unaided eye. E) Gross anatomy is the study of internal body structures; microscopic anatomy is the study of how living organisms perform their functions.
Absorption is best described as the:
A) reactions that break chemical bonds of food particles. B) elimination of feces and some metabolic wastes. C) movement of food particles through the wall of the alimentary canal. D) passage of foods and liquids from one digestive organ to the next.