Rapid loss of blood may lead to shock and death. What series of events do the kidneys initiate to raise the blood pressure of a person who has been severely cut to prevent shock and subsequent death?
What will be an ideal response?
The kidneys produce renin in response to lowered blood pressure. Renin stimulates the production of angiotensin in the bloodstream. Angiotensin constricts arterioles, which decreases bleeding and reduces blood flow to the kidneys so that less water is lost in urine. This results in increased blood volume and thus pressure.
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From an evolutionary point of view, what important process occurs when a young male baboon leaves the troop that he was born in to join another troop?
The primary function of the large intestine is to ____
a. absorb water b. absorb nutrients c. complete the digestion of carbohydrates d. complete the digestion of fats e. complete the digestion of protein
The founder effect is a type of
a. natural selection. b. mutation. c. genetic drift. d. gene flow. e. adaptation.
In females at puberty, what cells begin to secrete the major female sex hormone estradiol?
A. oocyte cells B. corpus luteum C. follicle cells D. granulosa cells