Define systole and diastole. Which heart chambers are usually referenced when these terms are used?
What will be an ideal response?
Systole is contraction of the muscle. Diastole is relaxation of the muscle. The contraction and relaxation of the ventricles are normally described with the terms systole and diastole.
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A. maxillary and zygomatic bones. B. ethmoid and lacrimal bones. C. zygomatic and sphenoid bones. D. frontal bone.
During exercise, the cardiac output ____________________
Fill in the blank(s) with correct word
Blood O2 levels
A. within the normal PO2 range have little effect on regulation of respiration. B. never change enough to influence respiration. C. are more important than CO2 levels in the regulation of respiration. D. in venous blood and arterial blood are about the same. E. need to change only slightly to cause a change in respiration rate.
Birds transfer sperm directly from the __________ of the male to that of the female
Fill in the blank with the correct word.