Circulatory System

Q.

Which chamber of the human heart receives deoxygenated blood?

Q.

What gas do humans breathe out?

Q. Answer the following :
1. Name the chambers of the heart.
2. Name the valves present in the heart.

Q. Blood pumping organ in human body is

1. Brain
2. Heart
3. Muscle
4. Spleen

Q. Exhaled air has more percentage of carbon dioxide than inhaled air.

Q.

relationship between heart beat and blood pressure.

Q.

Look at the picture above carefully. It represents the transportation inside a sea sponge.

“This organism has a circulatory system”. Is this statement true or false?

1. True

2. False

Q. Choose the correct statement(s) from the following.

1. Arteries are thick-walled and have narrow lumen as compared to veins.
2. WBCs play a very important role in blood clotting.
3. Person with blood group AB can donate blood to anyone.
4. In diseases such as dengue, platelet count decreases to a great extent.

Q. Rani requested her teacher to tell the therapeutic uses of recombinant protein, Tissue Plasminogen activator (t - PA).

Q. Choose the correct proportion with respect to the distribution of blood in the body of a human.

1. 5% to heart muscles, 15% to the brain, 25% to the liver, 25% kidney, 15% to bones, 15% to other organs.
2. 20% to heart muscles, 10% to the brain, 10% to the liver, 25% to the kidney, 10% to bones, 25% to other organs.
3. 10% to heart muscles, 10% to the brain, 10% to the liver, 40% to the kidney, 15% to bones, 35% to other organs.
4. 5% to heart muscles, 20% to the brain, 20% to the liver, 15% to the kidney, 5% to bones, 35% to other organs.
5. 1% to heart muscles, 20%to the brain, 30%to the liver, 40% to the kidney, 5% to bones, 40% to other organs