This figure shows an anterior view of the spinal cord and meninges. What structure does number 1 indicate?
A. Anterior root
B. Posterior root
C. Anterior root ganglion
D. Posterior root ganglion
E. Gray commissure
D
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When pregnant, a woman has an increased sensitivity to the hormone angiotensin
Indicate whether this statement is true or false.
A powerful bronchoconstrictor released by mast cells is ________.
Fill in the blank(s) with the appropriate word(s).
Why is there variation in skin color among modern humans?
A. People are exposed to different chemicals over their lifetime. B. People have different numbers of melanocytes. C. People have a different distribution of melanin in their epidermis. D. People have a different distribution of carotene in their skin. E. People have different hemoglobin in vessels close to their skin.
Which of the following structures releases neurotransmitter in a paravertebral ganglion?
A) Postganglionic sympathetic fiber B) Somatic motor fiber C) Postganglionic parasympathetic fiber D) Preganglionic parasympathetic fiber E) Preganglionic sympathetic fiber