Which of the following is true about simple reflexes?
A. They travel through the entire body.
B. They travel only through the spinal cord.
C. They travel only through the brain.
D. They do not travel and remain localized.
Estrogen serves what primary function in the female reproductive system?
A. It initiates the preparation of the endometrium for pregnancy.
B. It triggers the release of the egg from the ovary.
C. It causes fertilization.
D. It triggers the production of breast milk.
What is the name of the structure that transfers urine from the kidneys to the bladder?
A. Urethra.
B. Tubules.
C. Ureters.
D. Nephron.
Humans can survive most easily without which of the following?
A. Pancreas.
B. Lungs.
C. Gallbladder.
D. Bladder.
Which of the following is NOT a role of cortisol?
A. Reducing inflammation.
B. Raising the blood sugar level.
C. Inhibiting the release of histamine.
D. Controlling motor impulses.
How many pairs of spinal nerves are known to exit the spinal cord?
A. 10.
B. 12.
C. 31.
D. 42.
The spinal cord reaches from the base of the skull to the first or second lumbar vertebra. The base of the skull is also known as:
A. foramen magnum.
B. filaments.
C. cerebellum.
D. corpus callosum.
Cyclic adenosine monophosphate is a substance that performs which of the following?
A. Acts as part of the cell membrane
B. Acts as energy for the cell
C. Acts as a secondary messenger
D. Acts as a hormone
The neuron is composed of a/n ________, which transmits signals toward the cell body, and a/n _______, which transmits signals away from the cell body.
A. dendrite, axon
B. axon, dendrite
C. filament, axon
D. axon, filament
The pectoralis major muscle is located in which general area?
A. The chest.
B. The back.
C. The feet.
D. The buttocks.
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