Double Circulation

Q.

What is the red pigment contained in muscles called?

Q.

How is glucose stored in skeletal muscles?

Q.

Differentiate between pulmonary circulation and systemic circulation.

Q. Breathing, blood circulation and digestion are vital functions that are carried out by the muscles.

1. voluntary
2. skeletal
3. involuntary

Q. Mark the statements as true or false.

A. Systemic circulation starts from the left ventricle and ends in the right atrium.

B. Pulmonary circulation starts from the right ventricle and ends in the left atrium.

Q.

Which of the following statement(s) is/are true about the heart?

(i) Left atrium receives oxygenated blood from different parts of body while right atrium receives deoxygenated blood from lungs.

(ii) Left ventricle pumps oxygenated blood to different body parts while right ventricle pumps deoxygenated blood to lungs.

(iii) Left atrium transfers oxygenated blood to right ventricle which sends it to different body parts.

(iv) Right atrium receives deoxygenated blood from different parts of the body while left ventricle pumps oxygenated blood to different parts of the body.

1. (i)

2. (ii)

3. (ii) and (iv)

4. (i) and (iii)

Q.

During double circulation, heart receives blood two times, once from____and another time from______.

1. lungs, body

2. kidney, lungs

3. brain, body

4. body, lungs

Q.

Choose the options that correctly shows the direction of blood in the heart, lungs and body and the type of circulation.

1. Systemic Circulation: Right Ventricle $\to$ Lungs $\to$ Left Atrium

2. Pulmonary Circulation: Right Ventricle $\to$ Lungs $\to$ Left Atrium

3. Systemic Circulation: Left Ventricle $\to$ Body $\to$ Right Atrium

4. Pulmonary Circulation: Right Ventricle $\to$ Body $\to$ Left Atrium

Q.

Which of the following sequences is the correct pathway for systemic circulation?

1. Left auricle → left ventricle → pulmonary aorta → tissues → right auricle

2. Right ventricle → pulmonary aorta → tissues → pulmonary veins → left auricle

3. Left auricle → left ventricle → aorta → arteries → tissues → veins → right atrium

4. Right auricle → left ventricle → aorta → tissues → veins → right auricle

Q. How many chambers are there in fish heart?

1. Two
2. Three
3. Four
4. One

Q.

Which of the following movements occur continuously in our body, even when we are asleep?

1. Chewing, Breathing, Circulation of blood

2. Beating of heart, Running, Circulation of blood

3. Beating of heart, Breathing, Circulation of blood

4. Chewing, Running, Circulation of blood

Q.

Excretion means-

1. Removal of nitrogenous substances

2. Formation of those substances that have some role in the body

3. Removal of such substances that have never been part of the body

4. All of the above

Q.

Among the following, which one depicts the correct circulatory pathway?

1. Vena cava → left atrium → left ventricle → lungs → right atrium → right ventricle → aorta

2. Vena cava → right atrium → right ventricle → lungs → left atrium → left ventricle → aorta

3. Vena cava → right atrium → left atrium → lungs → right ventricle → left ventricle → aorta

4. Vena cava → left atrium → right atrium → lungs → left ventricle → right ventricle → aorta

Q. Which of the following matches correctly?

1. Inferior vena cava - receives deoxygenated blood from the head and body
2. Superior vena cava - receives deoxygenated blood from the lower body and organs
3. Pulmonary artery - carries deoxygenated blood to the lungs
4. Hepatic artery carries oxygenated blood to the liver

Q. Which of the following vertebrates were the first to evolve a three chambered heart so that every cell of the body receives proper amount of oxygen?

1. Fishes
2. Reptiles
3. Birds
4. Amphibians

Q.

Describe double circulation in human beings. Why is it necessary?

Q.

How many times will a red blood corpuscle have to pass through the heart in its journey from hepatic artery to the aorta?

1. Only once

2. Two times

3. Four times

4. Several times

Q. Assertion :In amphibians, heart is two chambered. Reason: The deoxygenated blood is returned to the heart through sinus venous.

1. Both Assertion and Reason are correct and Reason is the correct explanation for Assertion.
2. Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion.
3. Assertion is correct but Reason is incorrect.
4. Assertion is incorrect but Reason is correct.

Q.

In amphibians, a three chambered heart causes the mixing of oxygenated and deoxygenated blood. Which of the following is the effect of this type of arrangement?

1. Maintenance of a constant body temperature

2. Inefficiency in transporting oxygen.

3. Efficient energy generation.

4. Efficiency in transporting oxygen.

Q.

Which of the following structures are directly involved in the "pulmonary circuit"?

1. Superior vena cava, right atrium, left ventricle

2. Right ventricle, pulmonary arteries, left atrium

3. Left ventricle, aorta, inferior vena cava

4. Right atrium, aorta, left ventricle

Q. Which of the following animal that lives in oceans and feeds its young ones is:

1. Penguin
2. Fish
3. Turtle
4. Whale

Q. The given graph shows an oxygen dissociation curve for haemoglobin.
Where in the body will haemoglobin be saturated at the percentages shown at points 1, 2 and 3 on the graph?

1. Left ventricle1Pulmonary vein2 Vena cava3
2. Left ventricle2Pulmonary vein1Vena cava3
3. Left ventricle2Pulmonary vein3Vena cava1
4. Left ventricle3Pulmonary vein2Vena cava1

Q. Which of the following chambers of the heart has the thickest muscular wall?

1. Left atrium
2. Right atrium
3. Right ventricle
4. Left ventricle

Q. All veins except ____ vein carry oxygenated blood.

1. Umbilical
2. Renal
3. Hepatic
4. Jugular

Q.

Which of the following is the correct sequence for the pulmonary circuit?

1. Right Ventricle $\to$ Pulmonary Artery $\to$ Lungs $\to$ Pulmonary Vein $\to$ Left Auricle

2. Left Auricle $\to$ Pulmonary Vein $\to$ Lungs $\to$ Pulmonary Artery $\to$ ​​​​​​​Right Ventricle​​​​​​​

3. Left Auricle $\to$ Pulmonary Artery $\to$ Lungs $\to$ Pulmonary Vein $\to$ ​​​​​​​Right Ventricle​​​​​​​

4. Right Ventricle $\to$ Pulmonary Vein $\to$ Lungs $\to$ Pulmonary Artery $\to$ Left Auricle

Q.

why did cold blooded organisms have two or three chambered heart and warm blooded have four chambered heart?