★ Excretory System Quiz
Each kidney has nearly _________ million complex tubular structures called nephrons
A. 1
B. 2
C. 3
D. 4
Select your answer:
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Nervous System › ViewThe primary function of the nervous system is to…
A. provide nutrients for the body.
B. send and recieve messages
C. circulate oxygen to sells
D. remove carbon dioxide from blood
The Blood › View
Which of the following is NOT a type of blood vessel?
A. Artery
B. Capillary
C. Vein
D. Ventricle