Transport in Animals

What is the main function of the circulatory system in animals?

• Regulation of body temperature

• Digestion of food

• Production of hormones

• Transportation of essential substances

Name the blood vessels that carry blood away from the heart.

• Bronchioles

• Veins

• Arteries

• Capillaries

What is the function of arteries in the circulatory system?

• To carry oxygenated blood away from the heart.

• To store excess blood for emergencies.

• To regulate blood pressure in the body.

• To carry deoxygenated blood towards the heart.

Describe the structure of capillaries in the circulatory system.

• Capillaries are the largest blood vessels in the circulatory system.

• Capillaries have thick walls made of multiple layers of endothelial cells.

• Capillaries in the circulatory system are small blood vessels with thin walls made of a single layer of endothelial cells.

• Capillaries have no role in the transport of oxygen and nutrients.

What are the components of blood?

• Plasma, red blood cells, white blood cells, platelets

• Iron, calcium, potassium, sodium

• Water, oxygen, carbon dioxide, nitrogen

• Plasma, red blood cells, platelets, hemoglobin

Which blood vessel carries oxygen-rich blood back to the heart?

• Hepatic veins

• Coronary veins

• Pulmonary veins

• Pulmonary arteries

Explain the role of veins in the circulatory system.

• Veins regulate blood pressure in the circulatory system

• Veins are responsible for filtering blood in the circulatory system

• Veins transport oxygenated blood from the heart to the body

• Veins play a crucial role in returning deoxygenated blood to the heart in the circulatory system.

How are arteries different from veins in terms of structure?

• Arteries carry deoxygenated blood, while veins carry oxygenated blood.

• Arteries have valves to prevent backflow of blood, while veins do not have valves.

• Arteries have thicker walls with more smooth muscle and elastic tissue, while veins have thinner walls with less muscle and elastic tissue.

• Veins have thicker walls with more smooth muscle and elastic tissue, while arteries have thinner walls with less muscle and elastic tissue.

What is the function of red blood cells in the blood?

• Transport oxygen and carbon dioxide

• Produce antibodies

• Regulate body temperature

• Store nutrients

Name the blood vessel that connects arteries to veins.

• Capillaries

• Veins

• Venules

• Arterioles