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What are the main substances transported by the circulatory system?
Oxygen, Nutrients, Antibodies, Hormones, Heat, Carbon dioxide, Urea.
What is the function of erythrocytes in the blood system?
Erythrocytes transport oxygen in hemoglobin molecules.
What role do leukocytes play in the blood system?
Leukocytes function as part of the immune system.
What is the main component of blood plasma?
Water, which dissolves or carries other components.
What are the types of blood cells mentioned, and their roles?
Erythrocytes (carry oxygen), Leukocytes (immune response), T lymphocytes (immune response), Platelets (clotting).
What is the role of nutrients in the circulatory system?
Nutrients provide essential energy and support growth.
How does carbon dioxide function in the blood system?
Carbon dioxide is a waste product transported for excretion.
How do arteries differ from veins in the circulatory system?
Arteries carry high pressure blood away from the heart; veins carry low pressure blood back to the heart.
What is the diameter of capillaries?
Capillaries are very small, about 10 microns in diameter.
What is the purpose of hormones in the blood system?
Hormones are regulatory substances for various bodily functions.
What is urea, and why is it important in the blood?
Urea is a waste product carried out of the body.
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