The term "hypercapnia" refers to
A) the cessation of breathing.
B) elevated PCO2.
C) elevated PO2.
D) an increase in pH.
E) labored breathing.
Answer: B
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Cells that reside in a specific connective tissue type for an extended period of time are
called A) transitional cells. B) stem cells. C) fixed cells. D) wandering cells.
Match the structure of the ear with the appropriate description.A. EardrumB. Part of the ear that contains the organ of hearingC. Includes the pinna and external auditory canalD. Fleshy portion of the external earE. Air-filled space within the temporal boneInner ear
Fill in the blank(s) with the appropriate word(s).
Blood is supplied to the muscular wall of the left atrium by the
A) brachiocephalic artery. B) right coronary artery. C) left coronary artery. D) phrenic arteries. E) pulmonary arteries.
Why do cones exhibit less neuronal convergence than rods?
A. Rods cannot distinguish different colors from each other. B. No images are perceived within the optic disc. C. Photopic vision has higher resolution than scotopic vision. D. Rods do not function in bright light. E. Cones do not detect black and white.