Tag: basics of blood and heart

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

Which of the following is covered by pericardium membrane?

  1. Heart

  2. Kidneys

  3. Small intestine

  4. Stomach
Reveal answer Fill a bubble to check yourself
A Correct answer
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'.

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

The blood with no oxygen is received in the 

  1. Left atrium

  2. Left ventricle

  3. Right atrium

  4. Right ventricle
Reveal answer Fill a bubble to check yourself
C Correct answer
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.
Multiple choice evs transportation in living organisms circulatory system and organs basics of blood and heart circulatory system

The separation of the atria and ventricle helps to 

  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
Reveal answer Fill a bubble to check yourself
A Correct answer
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'.
Multiple choice evs transportation in living organisms circulatory system and organs basics of blood and heart circulatory system

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

  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.
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Blood flows from the right ventricle into the pulmonary arteries to reach the lungs for oxygenation. After gas exchange, it returns via the pulmonary veins to the left atrium before entering the left ventricle.