Pulmonary arterioles ________ and system arterioles ________ when PO2 is low.
A. dilate; dilate
B. constrict; constrict
C. constrict; dilate
D. dilate; constrict
Answer: C
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How would the loss of acetylcholinesterase from the motor end plate affect skeletal muscle?
A) It would make the muscles less excitable. B) It would produce muscle weakness. C) It would cause muscles to stay contracted. D) It would cause muscles to stay relaxed. E) It would have little effect on skeletal muscles.
Within the periodic table, elements are organized consecutively by
A. atomic mass within columns.?B. atomic mass within rows.?C. atomic number within columns.?D. atomic number within rows.
Which of the following is an example of an incomplete protein food?
A. Leafy green vegetables B. Meat C. Eggs D. Cheese E. Milk
Contrast the white matter and gray matter in the CNS
A) White matter of the CNS is dominated by glial cells. Gray matter is dominated by myelinated axons. B) White matter of the CNS is dominated by myelinated axons. Gray matter is dominated by glial cells. C) White matter of the CNS is dominated by neuron cell bodies, dendrites, and unmyelinated axons. Gray matter is dominated by myelinated axons. D) White matter of the CNS is dominated by myelinated axons. Gray matter of the CNS is dominated by neuron cell bodies, dendrites, and unmyelinated axons. E) White matter of the CNS is dominated by unmyelinated axons. Gray matter of the CNS is dominated by glial cells.