Oxygenation of Blood

Q.

Which chambers of the heart has thickest wall?

1. Right ventricle

2. Left ventricle

3. Right auricle

4. Left auricle

Q.

Oxygen in the blood is carried by ______

1. Platelets

2. Red blood cells

3. White blood cells

4. Plasma

Q.

The heart is conical in shape and is surrounded by a protective membrane called the ___.

Q.

Where is the impure blood found in our bodies?

Q.

How many blood vessels leave the heart?

Q. The chambers of the heart are separated by walls known as ______.

1. reticulate
2. spinchter
3. septum
4. cilia

Q.

Which of the following carries oxygen-rich blood?

1. Left atrium

2. Right atrium

3. Right ventricle

4. Veins

Q. What is haemoglobin? What happens when haemoglobin levels decrease?

Q.

The carbon dioxide rich blood is present in:

1. I and III

2. II and III

3. III

4. I and IV

Q.

The doctor gave some names to the arteries and veins attached to the heart. Can you help Appu remember those names by choosing the option that correctly labels the diagram shown?

1. i – Aorta, ii – Pulmonary Vein, iii – Vena Cava, iv – Pulmonary Artery

2. i – Vena Cava, ii – Pulmonary Vein, iii – Pulmonary Artery, iv - Aorta

3. i – Pulmonary Vein, ii – Pulmonary Artery, iii – Vena Cava, iv - Aorta

4. i – Pulmonary Artery, ii – Pulmonary Vein, iii – Vena Cava, iv - Aorta

Q. Are fishes osmoconformors or osmoregulators ? Explain.

Q.

The upper chambers of heart which pump blood into the ventricles are called ________. Choose the correct option.

1. Ventricles

2. Atria

3. Venules

4. Arterioles

Q.

Oxygenated blood from lungs enters heart through________

1. Pulmonary vein

2. Pulmonary artery
   
   

3. Coronary system

4. Systemic vein

Q.

For reaching the left side of the heart, blood must pass through the ___ .

1. Liver

2. Brain

3. Lungs

4. Kidney

Q. Oxygenated blood from lungs enters heart through

1. Pulmonary vein
2. Pulmonary artery
3. Coronary system
4. Coronary vein

Q.

which vessel(artery or vein) carry food & nutrient and which carry waste products?

Q.

Dear Expert,

How come de-oxygenated blood from the right ventricle and auricle flows into the pulmonary ARTERY and oxygenated blood flows from the pulmonary VEIN into the left auricle and ventricle. Doesnt that deny the fact that oxygenated blood flows in the arteries and de-oygenated blood in the veins?

Q.

Why is the left ventricular wall of the heart thicker than the right ventricular wall?

1. To accommodate a greater volume of blood

2. To expand the thoracic cage during diastole

3. To pump blood with greater pressure

4. To pump blood through a smaller valve

Q.

In the lesson it is mentioned that the Veins carry the deoxygenated blood to the heart.

Deoxygenated blood collected by the vein pick up oxygen in the lungs and the carbon dioxide is removed from it when we exhale( breathe out ). Further, the oxygenated blood is carried back to the heart where it is pumped again to all parts of the body through arteries.

So, the oxygenated blood only is carried back to the heart from the lungs instead of the deoxygenated blood as it is mentioned in the lesson.

Is it correct or not?