Which of the choices below does not explain why low capillary pressures are desirable?
A) Capillaries are fragile and high pressures would rupture them.
B) Most capillaries are extremely permeable and thus even low pressures force solute-containing fluid out of the bloodstream.
C) Low blood pressure is more desirable than high blood pressure.
C) Low blood pressure is more desirable than high blood pressure.
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The space between the cheeks or lips and the teeth is called the
A) pharynx. B) larynx. C) fauces. D) vestibule. E) dip sulcus.
Which is characteristic of a person chronically suffering from hypoxic hypoxia?
A. higher-than-normal alveolar PO2 B. higher-than-normal hematocrit C. higher-than-normal arterial PO2 D. lower-than-normal lactic acid production E. lower-than-normal blood flow through tissues
All of the following are general categories of hormones except which one?
A. Proteins B. Amino acid derivatives C. Steroids D. All of these answers are correct.
During implantation, the trophoblast divides into a deep layer called the ________, which is composed of individual cells.
A. cytotrophoblast B. amnion C. embryoblast D. syncytiotrophoblast E. chorion