When plasma O2 concentrations are falling, the rising plasma CO2 binds to the __________ of the hemoglobin molecule.
a. heme
b. porphyrin
c. alpha and beta chains
d. none of the listed responses is correct
Ans: c. alpha and beta chains
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Which of the following is not attributable to complement activity?
a. Acting as opsonins b. Walling-off the inflamed area c. Serving as chemotaxins d. Stimulating the release of histamine e. Forming a membrane attack complex
Amphioxus obtains its oxygen by diffusion over the body surface. Why aren't vertebrates generally able to do this that is, why do most aquatic vertebrates rely on gills for gas exchange?
What will be an ideal response?
This structure contributes to stability of the hip joint
A) cruciate ligaments B) acetabular labrum C) menisci D) rotator cuff muscles
The MABP (mean arterial blood pressure) is equal to
A. cardiac output / peripheral resistance. B. cardiac output - peripheral resistance. C. cardiac output + peripheral resistance. D. cardiac output x peripheral resistance.