Body Fluids and Circulation Test

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Body Fluids and Circulation Test - 24

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Question 1
1 / -0

During blood clotting, fibrin is produced from:

A
Thrombokinase

B
Prothrombin

C
Liver

D
Proteolysis

Solution

During the process of blood clotting, platelets release thromboplastin which converts prothrombin into thrombin. This thrombin in presence of calcium ions is responsible for converting fibrinogen into insoluble fibrin, thus forming a clot.
So, the correct answer is 'Prothrombin'.
Question 2
1 / -0

During blood clotting, which of the following is used?

A
Co

B
$$Ca^{++}$$

C
$$Na^+$$

D
$$Cl^-$$

Solution

Blood clotting (coagulation) is the process by which blood vessels repair ruptures after injury. Calcium works together with vitamin K and a protein, called as fibrinogen in the clotting cascade, which forms fibrin. The fibrin hardens very quickly to form a scab over the wound.
Hence, correct answer is option B.
Question 3
1 / -0

Prothrombin is found in

A
Intestine and helps in cellulose digestion

B
Liver and helps in production of bile

C
Blood and gives red colour to blood

D
Blood and helps in blood clotting

Solution

Prothrombin is a plasma protein which is converted into thrombin in the presence of thromboplastin released by platelets at the site of injury. The thrombin then converts protein fibrinogen into insoluble fibrin and thus aids in blood clotting.
Question 4
1 / -0

Blood platelets are found only in the blood of

A
Birds

B
Reptiles

C
Mammals

D
Amphibians

Solution

Platelet also known as thrombocyte is a colourless, nonnucleated blood cell that is important in the formation of blood clots (coagulation). Platelets are found only in the blood of mammals. Platelets are formed when cytoplasmic fragments of megakaryocytes, which are very large cells in the bone marrow, pinch off into the circulation as they age. They are stored in the spleen. Hence, option C is the correct answer.
Question 5
1 / -0

Number of WBCs per mm$$^3$$ of human blood is _______.

A
8000

B
7000

C
6500

D
6000

Solution

White blood cells (WBCs), also called leukocytes, are an important part of the immune system. These cells help to fight against infections by attacking bacteria, viruses, and germs that invade the body. White blood cells originate in the bone marrow but circulate throughout the bloodstream. The number of WBCs per mm$$^3$$ of human blood is approximately 8000.
Hence, option A is correct.
Question 6
1 / -0

The term haematocrit means

A
The volume percentage of red blood cells in blood.

B
The ratio of blood volume to extracellular space.

C
The percentage of new blood cells formed every 120 days.

D
The percentage of blood that is white blood cells.

Solution

The hematocrit, also known as packed cell volume (PCV) or erythrocyte volume fraction (EVF), is the volume percentage of red blood cells in blood. It is normally 45% for men and 40% for women. It is considered an integral part of a person's complete blood count results, along with hemoglobin concentration, white blood cell count, and platelet count. Hence the correct option is A.
Question 7
1 / -0

An anticoagulant is

A
Heparin

B
Hirudin

C
EDTA

D
All of the above

Solution

Heparin is a natural anticoagulant in the body. Hirudin is an anticoagulant produced by leech while sucking the blood of the host. EDTA acts as an anticoagulant by removing calcium ions from the blood and thus chelates with them.
Thus, the correct answer is option D.
Question 8
1 / -0

Structure absent from fresh frozen blood plasma is

A
Immunoglobulin

B
Plasma

C
Albumin

D
Platelets
Solution
- Structure absent from fresh frozen blood plasma are platelets. Platelets have no nucleus: they are fragments of cytoplasm which are derived from the megakaryocytes.
- The main function of platelets is to contribute to hemostasis and to stop bleeding at the site of interrupted endothelium. They gather at the site and unless the interruption is physically too large, they plug the hole.
- In the fresh frozen blood plasma, there will be an absence of blood cells. So, in frozen plasma platelets are also absent.
Thus, the correct answer is option D.
Question 9
1 / -0

Peyer's patches produce:

A
Enterokinase

B
Lymphocyte

C
Mucus

D
Trypsin
Solution
- Peyer's patches are located in the ileum of small intestine. They are masses of lymphatic tissue.
- Their function is to produce lymphocytes which prevent the growth of bacterial populations inside the body.
- Hence the correct option is B.
Question 10
1 / -0

Identify the correct pathway of blood circulating in the body.

A
Right atrium$$\rightarrow$$ Right ventricle $$\rightarrow$$ Lungs $$\rightarrow$$ Left atrium $$\rightarrow$$ Left ventricle $$\rightarrow$$ Body

B
Right atrium $$\rightarrow$$ Left ventricle $$\rightarrow$$ Body $$\rightarrow$$ Right atrium $$\rightarrow$$ Lungs $$\rightarrow$$ Right ventricle

C
Left atrium $$\rightarrow$$ Left ventricle $$\rightarrow$$ Lungs $$\rightarrow$$ Right atrium $$\rightarrow$$ Right ventricle $$\rightarrow$$ Body

D
Right atrium $$\rightarrow$$ Left ventricle $$\rightarrow$$ Lungs $$\rightarrow$$ Left atrium $$\rightarrow$$ Right ventricle $$\rightarrow$$ Body

Solution

The right atrium receives deoxygenated blood from the body through the vena cava. Right atrium contracts and passes the blood to the right ventricle. The right ventricle contracts and the deoxygenated blood is carried by the pulmonary artery to the lungs. After the exchange of gases in the lungs, the deoxygenated blood becomes oxygenated blood and is then carried by the pulmonary vein to the left atrium. The left atrium contracts and passes the oxygenated blood to the left ventricle. The left ventricle contracts and the oxygenated blood is pumped through the aorta which divides into arteries and then the oxygenated blood reaches various parts of the body.
So, the correct answer is option A.

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Re-Attempt Weekly Quiz Competition

Body Fluids and Circulation Test - 24

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Body Fluids and Circulation Test - 24

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SHARING IS CARING

Question 1

Thrombokinase

Prothrombin

Liver

Proteolysis

Solution

Question 2

Co

$$Ca^{++}$$

$$Na^+$$

$$Cl^-$$

Solution

Question 3

Intestine and helps in cellulose digestion

Liver and helps in production of bile

Blood and gives red colour to blood

Blood and helps in blood clotting

Solution

Question 4

Birds

Reptiles

Mammals

Amphibians

Solution

Question 5

8000

7000

6500

6000

Solution

Question 6

The volume percentage of red blood cells in blood.

The ratio of blood volume to extracellular space.

The percentage of new blood cells formed every 120 days.

The percentage of blood that is white blood cells.

Solution

Question 7

Heparin

Hirudin

EDTA

All of the above

Solution

Question 8

Immunoglobulin

Plasma

Albumin

Platelets

Solution

Question 9

Enterokinase

Lymphocyte

Mucus

Trypsin

Solution

Question 10

Right atrium$$\rightarrow$$ Right ventricle $$\rightarrow$$ Lungs $$\rightarrow$$ Left atrium $$\rightarrow$$ Left ventricle $$\rightarrow$$ Body

Right atrium $$\rightarrow$$ Left ventricle $$\rightarrow$$ Body $$\rightarrow$$ Right atrium $$\rightarrow$$ Lungs $$\rightarrow$$ Right ventricle

Left atrium $$\rightarrow$$ Left ventricle $$\rightarrow$$ Lungs $$\rightarrow$$ Right atrium $$\rightarrow$$ Right ventricle $$\rightarrow$$ Body

Right atrium $$\rightarrow$$ Left ventricle $$\rightarrow$$ Lungs $$\rightarrow$$ Left atrium $$\rightarrow$$ Right ventricle $$\rightarrow$$ Body

Solution

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