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Test: Body Fluids & Circulation - 2 - NEET MCQ


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20 Questions MCQ Test Biology Class 11 - Test: Body Fluids & Circulation - 2

Test: Body Fluids & Circulation - 2 for NEET 2024 is part of Biology Class 11 preparation. The Test: Body Fluids & Circulation - 2 questions and answers have been prepared according to the NEET exam syllabus.The Test: Body Fluids & Circulation - 2 MCQs are made for NEET 2024 Exam. Find important definitions, questions, notes, meanings, examples, exercises, MCQs and online tests for Test: Body Fluids & Circulation - 2 below.
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Test: Body Fluids & Circulation - 2 - Question 1

Blood plasma proteins :
i. decrease in their level causes excessive absorption of water from tissues into blood.
ii. they maintain osmotic pressure.

Detailed Solution for Test: Body Fluids & Circulation - 2 - Question 1

Let's analyze the statements about blood plasma proteins:

Statement i: "Decrease in their level causes excessive absorption of water from tissues into blood."

  • This statement is incorrect. A decrease in the level of blood plasma proteins would actually result in a decrease in osmotic pressure, leading to less water being drawn from tissues into the blood. Instead, it would cause water to accumulate in the tissues, leading to edema.

Statement ii: "They maintain osmotic pressure."

  • This statement is correct. Blood plasma proteins, especially albumin, play a crucial role in maintaining the osmotic pressure of the blood.

Therefore, the correct option is:

      3. Statement i) is wrong and ii) is correct.

Test: Body Fluids & Circulation - 2 - Question 2

The mass of tissue seen in the left corner of the right atrium close to the atri-ventricular septum is

Detailed Solution for Test: Body Fluids & Circulation - 2 - Question 2

The mass of tissue seen in the lower left corner of the right atrium close to the atrio-ventricular septum called the atrio-ventricular node (AVN).

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Test: Body Fluids & Circulation - 2 - Question 3

Match the following:

Detailed Solution for Test: Body Fluids & Circulation - 2 - Question 3

Antherosclerosis leads to high blood pressure, haemorrhage causes hypotension, heparin is used as anticoagulant and polycythemia causes abnormal increase in RBC count.

Test: Body Fluids & Circulation - 2 - Question 4

Manoj has AB blood group, so he will have the following antibodies in his blood plasma :

Detailed Solution for Test: Body Fluids & Circulation - 2 - Question 4

AB blood group does not have any antibodies in plasma. That's why AB blood group is a universal recipient.

Test: Body Fluids & Circulation - 2 - Question 5

When a person suffers from chest pain :
i. the reason for this suffering is decreased blood flow and simultaneously lowered oxygen supply to an area of the heart.
ii. deprived of oxygen, myocardium opts for alternative pathways i.e. anaerobic respiration and its byproduct ethanol causes the pain.

Detailed Solution for Test: Body Fluids & Circulation - 2 - Question 5

A symptom of acute chest pain appears when no enough oxygen is reaching the heart muscle.

Test: Body Fluids & Circulation - 2 - Question 6

Lymph will transport :

Detailed Solution for Test: Body Fluids & Circulation - 2 - Question 6

Fats are absorbed through lymph in the lacteals present in the intestinal villi.

Test: Body Fluids & Circulation - 2 - Question 7

Blood pressure is expressed as the ratio of systolic over diastolic pressure. The difference between systolic and diastolic pressure is called pulse pressure. What will be its value for a normal healthy adult?

Detailed Solution for Test: Body Fluids & Circulation - 2 - Question 7

Blood pressure is represented as the ratio of systolic over diastolic pressure. The difference between systolic and diastolic pressure is called pulse pressure. The value of normal healthy pulse pressure is 40 mm Hg.

Test: Body Fluids & Circulation - 2 - Question 8

As Soham, ages with chronic CAD the lumen of his coronary artery may get nearly completely obstructed Result is flow of blood to heart tissue is restricted such that the tissue receives inadequate supply of oxygen rich blood and this condition is diagnosed as :

Detailed Solution for Test: Body Fluids & Circulation - 2 - Question 8

In case of chronic CAD, the lumen of coronary artery may get nearly completely obstructed that results into restricted flow of blood to heart. The tissue receives inadequate bloods called myocardial ischemia.

Test: Body Fluids & Circulation - 2 - Question 9

In our blood :
i. Granulocytes which constitutes maximum percentage of total leucocytes are neutrophils.
ii. Elevated number of neutrophils in blood indicates an acute infection such as appendicitis.

Detailed Solution for Test: Body Fluids & Circulation - 2 - Question 9

In human blood, granulocytes and agranulocytes types of leucocytes are present. Neutrophils constitute the maximum percentage of total WBCs. Sharp increase in number of neutrophils in blood indicates an acute infection such as appendicitis.

Test: Body Fluids & Circulation - 2 - Question 10

In the human heart : 
i. The valve between right atrium and right ventricle is tricuspid while valve between left atrium and left ventricle is mitral valve.
ii. Openings of the right and the left ventricles into the pulmonary artery and the aorta are guarded by semilunar valves.
iii. ‘Lub’ the first sound which is low pitched is caused by the closure of semilunar valves while ‘Dub’ the second sound which is high pitched is caused by the closure of bicuspid and tricuspid valves.

Detailed Solution for Test: Body Fluids & Circulation - 2 - Question 10

The first heart sound (lub) is associated with the closure of the tricuspid and bicuspid valves whereas the second heart sound (dub) is associated with the closure of the semilunar valves.

Test: Body Fluids & Circulation - 2 - Question 11

Meghna suffers from allergic asthma. After a blood test her leucocyte count displayed an abnormal increase in the number of :

Detailed Solution for Test: Body Fluids & Circulation - 2 - Question 11

In case of allergic asthma, leucocyte count of blood test shows abnormal increase in the number of Eosinophils

Test: Body Fluids & Circulation - 2 - Question 12

Which of these is not included in the vascular system?

Detailed Solution for Test: Body Fluids & Circulation - 2 - Question 12
  • The vascular system or the human circulatory system consists of the heart, the blood vessels-the arteries, the veins and the capillaries, and the specialized fluid connective tissue, blood.
  • The lungs are a part of the respiratory system.
Test: Body Fluids & Circulation - 2 - Question 13

Each cardiac cycle takes 0.8 seconds to occur. Calculate how many cardiac cycles occur in 4 minutes ?

Detailed Solution for Test: Body Fluids & Circulation - 2 - Question 13

4 min = 240 sec. Therefore, 240/0.8 = 300 cardiac cycles.

Test: Body Fluids & Circulation - 2 - Question 14

Which of these organs are situated in the thoracic cavity?

Detailed Solution for Test: Body Fluids & Circulation - 2 - Question 14
  • The muscular heart is located in the thoracic cavity of the body.
  • It is located on the ventral side of the body.
  • The stomach, the kidneys and the ovaries are located below the heart and the lungs.
Test: Body Fluids & Circulation - 2 - Question 15

When blood clot starts contracting, a pale yellow fluid starts oozing out. Its name and composition is :

Detailed Solution for Test: Body Fluids & Circulation - 2 - Question 15

Plasma without the clotting factors is called serum. The clotting factors include fibrinogen and blood corpuscles

Test: Body Fluids & Circulation - 2 - Question 16

What is the location of the SAN?

Detailed Solution for Test: Body Fluids & Circulation - 2 - Question 16
  • The SAN or the sinoatrial node is located in the upper right corner of the right atrium.
  • It has the ability to generate 70-75 action potentials per minute.
  • It is hence known as the pacemaker of the heart.
Test: Body Fluids & Circulation - 2 - Question 17

Which of these structures is close to the AVN?

Detailed Solution for Test: Body Fluids & Circulation - 2 - Question 17
  • The AVN or the atrio-ventricular node is located in the lower left corner of the right atrium.
  • It is situated close to the atrio-ventricular septum which separates the atria and the ventricles.
Test: Body Fluids & Circulation - 2 - Question 18

Ramesh has Rh antigen and Anti-A as well as Anti-B antibodies in his blood. During blood transfusion he can receive blood from :

Detailed Solution for Test: Body Fluids & Circulation - 2 - Question 18

Since Ramesh has both Anti-A and Anti-B antibodies and the Rh antigen, he has the O positive blood group. Therefore, he can receive blood from individuals with O positive or O negative blood groups. This is because O negative blood lacks A and B antigens and is compatible due to the absence of Rh factor, making option b  correct.

Test: Body Fluids & Circulation - 2 - Question 19

Given below are two statements:
Statement I: The coagulum is formed of network of threads called thrombins.
Statement II: Spleen is the graveyard of erythrocytes.
In the light of the above statements, choose the most appropriate answer from the options given below:

Detailed Solution for Test: Body Fluids & Circulation - 2 - Question 19

RBCs have an average life span of 120 days after which they are destroyed in the spleen (graveyard of RBCs).
It is a clot or coagulam formed mainly of a network of threads called fibrins in which dead and damaged formed elements of blood are trapped.
Fibrins are formed by the conversion of inactive fibrinogens in the plasma by the enzyme thrombin.

Test: Body Fluids & Circulation - 2 - Question 20

What does the T-wave in an ECG represent?

Detailed Solution for Test: Body Fluids & Circulation - 2 - Question 20

The T-wave in an ECG represents the repolarisation of the ventricles, marking the return of the ventricles from an excited state to a normal state. This phase marks the end of systole. Therefore, Option C is correct.

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