Which is NOT true regarding autonomic reflexes?
A) Integrating centers for autonomic reflexes in the brain include the hypothalamus, brain stem, and limbic system.
B) Autonomic reflexes are all monosynaptic, with their synapse in the central nervous system.
C) Many autonomic reflexes are characterized by tonic activity, a continuous stream of action potentials.
D) Vomiting, sneezing, and coughing are all examples of autonomic reflexes.
B) Autonomic reflexes are all monosynaptic, with their synapse in the central nervous system.
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The molecules that stabilize the cell membrane and prevent it from breaking easily are the:
a. phospholipid molecules b. cholesterol molecules c. protein molecules d. all of the above
A body fluid has been collected and IgA antibodies have been detected. Which of the following statements is correct in regard to the fluid?
A. The body fluid is most likely blood because IgA antibodies are only found in blood. B. The body fluid is most likely lymph that contain B lymphocytes because IgA antibodies are most often attached to B lymphocytes. C. The body fluid is most likely saliva due to the presence of IgA antibodies.
The replication of the DNA molecule during interphase occurs during the
A. generation "gap" phase. B. first "gap" phase. C. S phase. D. second "gap" phase.
The left ventricle pumps ________ blood through the ________ valve.
A. deoxygenated; aortic B. oxygenated; pulmonary C. oxygenated; aortic D. deoxygenated; pulmonary