An organ that helps break down food but is not part of the tube through which the foodstuffs pass is referred to as a(n)
A. chemically digesting organ.
B. accessory digestive organ.
C. alimentary canal organ.
D. diffuse ingestive structure.
E. organ of mastication.
B
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Which of these is NOT one of the four general categories of cells that make up the human body?
A. Collagen cells B. Muscle cells C. Connective tissue cells D. Neurons E. Epithelial cells
If someone speaks too loudly into a microphone, a public address system will sometimes produce a loud whistle of amplified feedback
Explain whether this is an example of negative or positive feedback, and explain how the microphone, control box, and speaker of the system serve as the different components of a feedback loop.
The C cells of the thyroid gland produce
A) thyroxine. B) TSH. C) calcitonin. D) PTH. E) triiodothyronine.
Osteomyelitis causes destruction of bone tissue primarily by
A. promoting inflammation and overstimulation of osteoclast activity. B. inhibiting bone marrow production of osteoclasts. C. suppressing the production of RANKL by osteoblasts. D. stimulating apoptosis in osteoclast cells.