Which factor directly stimulates the kidney to release EPO?
a. elevated carbon dioxide in the plasma
b. the hematocrit
c. reduced oxygen delivery to the kidney
d. both (a) and (c)
e. all of the above
C
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In mammals, the __________ is the main blood vessel leading from the heart to the lungs
Fill in the blank with correct words.
The shallow depression seen on the external surface of the heart between the left and right ventricles is called the __________.
A. coronary sinus B. interventricular sulcus C. interventricular septum D. coronary sulcus E. left atrium
Which of the following is not a factor that increases risk of developing atherosclerosis?
A) Low blood pressure B) A diet high in unsaturated fats C) Tobacco smoking D) Lack of physical exercise
Which phase of the uterine cycle is characterized by degradation of the functional zone?
A) uterine phase B) menstrual phase C) proliferative phase D) secretory phase