Red blood cells (RBCs) have been placed in three different solutions: hypotonic, hypertonic, isotonic. What is the condition of the RBC in solution "B"?
A. crenated
B. hypertonic solution
C. isotonic solution
D. hemolyzed
E. hypotonic solution
A
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Most neurons lack ________ and so are permanently blocked from undergoing cell division
A) ribosomes B) endoplasmic reticula C) a nucleus D) centrioles E) cytoplasm
Smoking impairs cilia because the toxins paralyze and can destroy the cilia. Based on this loss of function, explain which types of infections smokers would be more susceptible to.
What will be an ideal response?
The flexor reflex
A) prevents a muscle from overstretching. B) prevents a muscle from generating damaging tension. C) moves a limb away from a painful stimulus. D) usually depends on cranial neurons. E) is an example of a monosynaptic reflex.
Fibers of the spinothalamic tract transmit pain and temperature information to the
A. hypothalamus. B. brainstem. C. thalamus. D. cerebellum.