For maximum loading of hemoglobin with oxygen at the lungs, the
A) PCO2 should be high.
B) pH should be slightly acidic.
C) PO2 should be about 70 mm Hg.
D) BPG levels in the red blood cells should be high.
E) PO2 should be as high as possible.
E
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Of the following muscles of the thigh which one is on the medial side of the anterior thigh?
A) gluteus medius B) biceps femoris C) vastus medialis D) vastus intermedius
Suckling by an infant triggers a positive-feedback mechanism that maintains lactation by stimulating the ________.
A. posterior lobe of the pituitary to secrete oxytocin B. contraction of the milk ducts C. anterior lobe of the pituitary to secrete prolactin D. hypothalamus to secrete prolactin-releasing hormone
Color blindness may be caused by Vitamin A deficiency, whereas night blindness is due to a deficiency of vitamin C
Indicate whether the statement is true or false
Both the respiratory system and the circulatory system are involved in the process of respiration
Indicate whether the statement is true or false