Blood flowing back to the heart travels in
A) veins.
B) arteries.
C) capillaries.
D) all of the above
Correct Answer:
Verified
Q4: Which of the following is involved in
Q5: In which of the following environments do
Q6: The _ helps prevent choking, and the
Q7: Each molecule of hemoglobin can carry up
Q8: The circulatory, respiratory, and excretory systems work
Q10: Aside from getting enough calories, we also
Q11: Oxygenated blood is found in the
A)right ventricle
Q12: Which of the following are the oxygen-carrying
Q13: Each heartbeat begins in the
A)sinoatrial node.
B)atrioventricular node.
C)right
Q14: Blood in the left ventricle of the
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