Which of the following would not result in the dilation of the feeder arterioles and opening of the precapillary sphincters in systemic capillary beds?
A) a local increase in pH
B) an increase in local tissue carbon dioxide
C) a decrease in local tissue oxygen content
D) a local increase in histamine
A
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A low count of which of the white blood cells shown in the figure may indicate radiation exposure, or systemic lupus erythromatosus?
a) A b) B c) C d) D e) E
The __________ disc contains no receptor cells for vision and produces a blind spot in the visual field of each eye.
Fill in the blank(s) with the appropriate word(s).
Which of the following is the first step in healing a bone fracture?
A. Formation of a hematoma B. Bone remodeling C. Formation of a soft callus D. Formation of a hard callus
Which stage of the cell cycle is characterized by DNA replication?
A) Anaphase B) Metaphase C) Telophase D) Interphase E) Prophase