Cells that produce myelin for the cells of the brain and spinal cord are the:
a. Schwann cells
b. microglia
c. astrocytes
d. oligodendrocytes
d. oligodendrocytes
Anatomy & Physiology
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Menarche is
A. marked by a dramatic decline in androgen secretion. B. a female's first menstrual cycle. C. the first four days of menstruation. D. the stage immediately preceding menopause. E. the final phase of the uterine cycle.
Anatomy & Physiology
The keratinocytes are tightly connected with each other by
A) keratin. B) prekeratin. C) collagen fibers. D) elastic fibers. E) desmosomes.
Anatomy & Physiology
Nerve cells generate electrical signals in response to changes in the environment. This is an example of
A. respiration. B. digestion. C. movement. D. filtration. E. responsiveness.
Anatomy & Physiology
What does the combining form cyan/o mean?
A. Blue B. Air C. Carbon dioxide D. Chest
Anatomy & Physiology