Microscopic examination of a patient's urine shows the presence of squamous epithelial cells. What is the most likely origin of these cells?
A) urinary bladder
B) urethra
C) nephrons
D) ureters
B
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Negative feedback is bad for the body because it increases a change away from normal.
Answer the following statement true (T) or false (F)
A nucleus is defined as a collection of neuron cell bodies located within the PNS.
Answer the following statement true (T) or false (F)
Before an olfactory receptor can detect an odorant, it has to
A) contact a specialized olfactory cell. B) bind to receptors in olfactory dendrites. C) gate open ion channels. D) respond to applied pressure. E) be transported to the olfactory bulbs.
Why does a skeletal muscle fiber have more than one nucleus?
A) During development, the plasmalemmas of newly formed muscle fibers disintegrate, making many muscle cells into one. B) During development, groups of embryonic cells fuse together to form a single muscle fiber. C) During development, the nucleus of each myoblast replicates several times. D) During muscular activity, parts of each muscle fiber break down, and the remaining parts, including their nuclei, fuse into new combination fibers. E) All of the answers are correct.