Tag: circulatory system

Questions Related to circulatory system

When the muscles of the heart relax

evs transportation in living organisms circulatory system and organs basics of blood and heart circulatory system

  1. Blood flows from lungs into the left auricle

  2. Blood is pumped into the right auricle from all over the body

  3. Both a and b

  4. Blood flows from the left ventricle to the rest of the body

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Correct Option: C
Explanation:

When the muscles of the heart relax, the right atrium receives deoxygenated blood from all parts of the body through superior, inferior vena cava and coronary sinus. The left atrium receives oxygenated blood from the lungs through two pairs of pulmonary veins. Thus option C is the correct answer. 

Blood from the left ventricle is pumped to

evs transportation in living organisms circulatory system and organs basics of blood and heart circulatory system

  1. Lungs

  2. Left auricle

  3. Right ventricle

  4. All parts of the body

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Correct Option: D
Explanation:

The left ventricle is the thickest of the heart's chambers and is responsible for pumping oxygenated blood to tissues all over the body. By contrast, the right ventricle solely pumps blood to the lungs.

So, the correct option is 'All parts of the body'.

Which of the following is covered by pericardium membrane?

evs transportation in living organisms circulatory system and organs basics of blood and heart circulatory system

  1. Heart

  2. Kidneys

  3. Small intestine

  4. Stomach

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Correct Option: A
Explanation:

The serosal pericardium is a closed sac within the fibrous pericardium. It consists of two layers. The visceral layer, called the epicardium, covers the heart and great vessels and is reflected back onto the parietal layer, which lines the interior of the fibrous pericardium.

So, the correct option is 'Heart'.

The blood with no oxygen is received in the 

evs transportation in living organisms circulatory system and organs basics of blood and heart circulatory system

  1. Left atrium

  2. Left ventricle

  3. Right atrium

  4. Right ventricle

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Correct Option: C
Explanation:
The heart is the pumping organ of the body. It consists of four chambers i.e., the right auricle, left auricle, right ventricle and left ventricle. The right auricle receives the deoxygenated blood from the body and pumps it to right ventricle which in turn pumps it to the pulmonary artery. Whereas left auricle receives blood from lungs and pumps it to left ventricle from where it is pumped to the whole body through the aorta. Thus, the correct answer is option C.

The separation of the atria and ventricle helps to 

evs transportation in living organisms circulatory system and organs basics of blood and heart circulatory system

  1. Prevent mixing of the blood

  2. Pump blood only to lower parts of the body

  3. Pump blood only to upper parts of the body

  4. Both A and C

Show answer
Correct Option: A
Explanation:
In the humans, the heart is a four-chambered muscular organ situated in the thoracic cavity in between the lungs. The upper two relatively small chambers are called atria and two larger lower chambers called ventricles. A thin, muscular wall called the interatrial septum separates the right and the left atria. whereas a thick-walled, the inter-ventricular septum, separates the left and the right ventricles. The right side of the heart has oxygenated blood and the left side has deoxygenated blood. Hence, the separation of the atria and ventricle helps to prevent mixing of the oxygenated and deoxygenated blood.
So, the correct answer is 'Prevent mixing of the blood'.

In aquatic mammals

evs transportation in living organisms circulatory system and organs basics of blood and heart circulatory system

  1. Heart will be small

  2. Heart will be large

  3. Lungs will be small

  4. Lungs will be large.

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Correct Option: B

Papillary muscles occur in

evs transportation in living organisms circulatory system and organs basics of blood and heart circulatory system

  1. Ventricles

  2. Auricles

  3. Atrioventricular valves

  4. Pulmonary valves.

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Correct Option: A

Ridges present in the ventricles are

evs transportation in living organisms circulatory system and organs basics of blood and heart circulatory system

  1. Columnae/Trabeculae carneae

  2. Papillary muscles

  3. Chordae tendineae

  4. Musculi pectinati.

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Correct Option: A

Chordae tendineae are found in

evs transportation in living organisms circulatory system and organs basics of blood and heart circulatory system

  1. Atria of heart

  2. Ventricles of heart

  3. Joints of legs

  4. Ventricles of brain

  5. Joints of hands.

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Correct Option: B

In order for the blood to flow from right ventricle to left ventricle in mammalian heart, it must flow through

evs transportation in living organisms circulatory system and organs basics of blood and heart circulatory system

  1. Right ventricle, pulmonary arteries, lungs, pulmonary veins, left atrium

  2. Right ventricle, pulmonary veins, lungs, pulmonary arteries, left atrium

  3. Right ventricle, right atrium, lungs, pulmonary veins, left atrium

  4. Right ventricle, systemic aorta, lungs, pulmonary veins, left atrium.

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Correct Option: A