The torque of a muscle (rotary component) is greatest in what position?
A. when the moment arm is longest
B. when the muscle insertion is 90° to the bone
C. both A and B
D. position does not affect torque
C. both A and B
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Active tissues receive approximately ________ as much O2 as inactive tissues.
A) 2 times B) 3 times C) 5 times D) 10 times E) 100 times
What cells display portions of the pathogens (antigens) they ingest on their plasma membranes?
A) basophils B) natural killer (NK) cells C) antigen-presenting cells D) eosinophils
In the carotid arteriogram below, the location of the internal carotid artery at the site indicated by the arrow is in the:
A) substance of the brain. B) cavernosus sinus. C) petrous part of the temporal bone. D) foramen lacerum. E) maxillary sinus.
In females the first meiotic division produces a secondary oocyte and a _____
Fill in the blank(s) with the appropriate word(s).