Body Fluids and Circulation Test

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Body Fluids and Circulation Test - 75

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Weekly Quiz Competition

Question 1
1 / -0

In a normal person at rest, the cardiac output or amount of blood pumped per minute by the left ventricle is approximately

A
1-2 L/min

B
1 L/min

C
2 L/min

D
5 L/min

Solution

The amount of blood flowing from the heart (from the left ventricle to the aorta) over a given period of time is known as cardiac output.

Cardiac output = Stroke volume x Heart rate (ventricular systole/min)

: Stroke volume = Volume of blood pumped by heart
Heart beat
70ml x 72/min = 5040 ml/min.
approx 5 L/min.
Thus, the correct option is D.
Question 2
1 / -0

Chemical released by blood platelets is

A
Heparin

B
Thromboplastin

C
Fibrinogen

D
Prothrombin

Solution

Thromboplastin is a plasma protein aiding blood coagulation through catalyzing the conversion of prothrombin to thrombin. It is a complex enzyme that is found in brain, lung, and other tissues and especially in the blood platelets.
Heparin is released by the mast cells and blood basophils.
Fibrinogen is produced by the hepatic parenchymal cell. It is converted by thrombin into fibrin during the blood clot formation.
Prothrombin is stored in the parenchymal cells of the liver.
Therefore, the correct answer is option B.
Question 3
1 / -0

With reference to the blood in a normal person, which one of the following statements is correct?

A
Compared to arteries, veins are less numerous and hold less of the body's blood at any given time.

B
Blood cells constitute about 70 percent of the total volume of the blood.

C
White blood cells (WBC) are made by lymph nodes only.

D
The blood has more platelets than WBC.
Solution
Blood is a specialized body fluid. It has four main components: plasma, red blood cells, white blood cells and platelets. The blood has more platelets than WBC. A normal platelet count ranges from 150,000 to 450,000 platelets per microliter of blood. An average normal range for white blood cells is between 4,500 and 10,000 /mcl.
Blood has many different functions. They are as follows:
Transporting oxygen and nutrients to the lungs and tissues.
Forming blood clots to prevent excess blood loss.
Carrying cells and antibodies that fight infection.
Bringing waste products to the kidneys and liver, which filter and clean the blood.
Regulating body temperature.
Question 4
1 / -0

Label the given blood cells.

A
(A)- WBC (B)- Platelets (C)- RBC

B
(A)- RBC (B)- Platelets (C)- WBC

C
(A)- RBC (B)- WBC (C)- Platelets

D
None of the above

Solution

Red blood cells are small and biconcave in shape as they lack a nucleus and other organelles. This means they can be packed with haemoglobin which is the oxygen-carrying pigment. The red blood cells are also flexible so they can squeeze through the small capillaries.
The morphology of white blood cells differs significantly from red blood cells. They have nuclei and do not contain haemoglobin.
Platelets have no cell nucleus, they are fragments of cytoplasm that are derived from the megakaryocytes of the bone marrow, and then enter the circulation. These unactivated platelets are biconvex discoid (lens-shaped) structures, 2–3 µm in greatest diameter. Thus, the correct answer is the option C.
Question 5
1 / -0

Which structures are found in a liver cell?

A
A

B
B

C
C

D
D

Solution

A liver cell is an animal cell and hence, does not contain cell wall, chloroplast and large vacuole which are generally found in the plant cell.
Question 6
1 / -0

The fluid present between the blood capillaries and the cell membrane, through which gasses, nutrients, and metabolic wastes are exchanged between the blood and the cells are called as:

A
Lymph

B
Plasma

C
Serum

D
Normal saline

Solution

The lymphatic system is responsible for returning excess interstitial fluid to the blood. Of the fluid that leaves the capillary, about 90 per cent is returned. The 10 per cent that does not return becomes part of the interstitial fluid that surrounds the tissue cells. It helps in the exchange of gases, nutrients and removes metabolic waste.
So, the correct answer is option A.
Question 7
1 / -0

Which among the following is an important function of Lymph?

A
Transport of oxygen to the brain

B
Transport of carbon dioxide to the lungs

C
Returning RBCs to the lymph nodes

D
Returning interstitial fluid to the blood

Solution

Lymph is a fluid which contains plasma and WBC, ie, Blood - RBC and it is characterized by the absence of RBC, the presence of more WBC and insoluble proteins and it is a part of tissue fluid. The main function of lymph is to return interstitial fluid back to the blood. Transport of oxygen and CO$$_2$$ takes place with the help of blood. Thus the correct option is D.
Question 8
1 / -0

Which are the phagocytic cells from given diagram?

A
I and V

B
I and III

C
I and IV

D
I and II

Solution

Figure I represents macrophages and figure V represents neutrophils, both of which are the phagocytic cells of body. Macrophages are precursors of monocytes, a type of agranulocytes and neutrophils are granulocytes with multilobed nuclei. Figures II, III and IV represent lymphocyte, eosinophil and basophil respectively which do not perform phagocytosis.
Hence the correct option is A.
Question 9
1 / -0

The clot formation can be prevented by treatment with .......... in gene therapy.

A
DNase

B
Recombinant vaccine

C
TPA

D
TGF - B

Solution

Tissue plasminogen activator (TPA) is a clot dissolving enzyme that is produced naturally by cells in the walls of blood vessels and catalyzes the conversion of plasminogen to plasmin. It is used to dissolve clots blocking coronary arteries in heart attack and cranial arteries in certain cases of stroke.
Question 10
1 / -0

The blood does not clot inside the body because of

A
Oxygenation of blood

B
Movement of blood

C
Heparin in blood

D
Absence of fibrinogen in blood

Solution

A blood clot is actually the thickened mass formed by the blood platelets and stops the blood profusely out of any cuts or wounds. However, in general and in healthy condition blood does not form clots inside the body due to the presence of heparin an anticoagulant that is secreted by the basophils and mast cells of the blood. Since, this is released into the blood vessels it prevents the formation of clots in them
So, the correct answer is 'Heparin in blood'

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Re-Attempt Weekly Quiz Competition

Body Fluids and Circulation Test - 75

Result

Body Fluids and Circulation Test - 75

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SHARING IS CARING

Question 1

1-2 L/min

1 L/min

2 L/min

5 L/min

Solution

Question 2

Heparin

Thromboplastin

Fibrinogen

Prothrombin

Solution

Question 3

Compared to arteries, veins are less numerous and hold less of the body's blood at any given time.

Blood cells constitute about 70 percent of the total volume of the blood.

White blood cells (WBC) are made by lymph nodes only.

The blood has more platelets than WBC.

Solution

Question 4

(A)- WBC (B)- Platelets (C)- RBC

(A)- RBC (B)- Platelets (C)- WBC

(A)- RBC (B)- WBC (C)- Platelets

None of the above

Solution

Question 5

A

B

C

D

Solution

Question 6

Lymph

Plasma

Serum

Normal saline

Solution

Question 7

Transport of oxygen to the brain

Transport of carbon dioxide to the lungs

Returning RBCs to the lymph nodes

Returning interstitial fluid to the blood

Solution

Question 8

I and V

I and III

I and IV

I and II

Solution

Question 9

DNase

Recombinant vaccine

TPA

TGF - B

Solution

Question 10

Oxygenation of blood

Movement of blood

Heparin in blood

Absence of fibrinogen in blood

Solution

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