Where does the heart get its oxygen?
A. lungs
B. pulmonary veins
C. pullmonary arteries
D. aorta
Select your answer:
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Biology › Viewthe substance which is responsible for the light red color of blood is ….
A. plasma
B. oxyhaemoglobin
C. carbo-aminohaemoglobin
D. haemoglobin
Excretion › View
More ADH secreted from the pituitary gland =?
A. More water reabsorbed and less concentrated urine
B. Less water reabsorbed and more concentrated urine
C. Less water reabsorbed and less concentrated urine
D. More water reabsorbed and more concentrated urine