Transport In Animals Flashcards
(5 cards)
1
Q
What are the main components of the circulatory system?
A
Heart, blood vessels (arteries, veins, capillaries), and blood.
2
Q
What is the difference between arteries, veins, and capillaries?
A
Arteries carry blood away from the heart, veins carry blood to the heart, capillaries enable gas and nutrient exchange.
3
Q
What is double circulation?
A
Blood passes through the heart twice per circuit — pulmonary (lungs) and systemic (body).
4
Q
What are the roles of red blood cells, white blood cells, platelets, and plasma?
A
RBCs transport oxygen, WBCs fight infection, platelets help clot, plasma carries nutrients and waste.
5
Q
How do heart valves function?
A
Prevent backflow, ensuring one-way blood flow.
