Body Fluids and Circulation Test

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Body Fluids and Circulation Test - 41

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Weekly Quiz Competition

Question 1
1 / -0

A portal system is one in which

A
A vein starts from an organ and ends up in heart.

B
A vein starts from an organ and ends up in another organ.

C
A vein starts from heart and ends up in lungs.

D
None of the above.

Solution

There are two types of portal systems they are Hepatic portal systems and renal portal system. In Hepatic (liver) portal system a vein collects blood from the intestine and passes it to the liver and in renal (kidney) portal system a vein collects blood from renal glomeruli and passes it to peritubular plexus (the blood capillaries that surrounds the proximal and distal convoluted tubules). Both hepatic and renal portal systems are found in fishes, amphibians, and reptiles. In mammals only hepatic portal system is present. Hence A portal system is one in which A vein starts from an organ and ends up in another organ.
So, the correct answer is 'A vein starts from an organ and ends up in another organ'.
Question 2
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Adventitia is outermost coat of.

A
Stomach

B
Intestine

C
Rectum

D
Artery

Solution

The correct answer is D
Tunica Adventitia or Tunica externa is the outer most layer of blood vessel, the Artery. This layer is made up of collagen fibres.
Question 3
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Capillary is defined as.

A
That connects the artery and vein

B
That connects the artery with lymphatic vessel

C
That connects arteriole with venule

D
That connects venule with lymph vessel

Solution

The correct answer is option C
The capillary system was discovered by Marcello Malpighi, Capillaries connect the arterioles to venules and through these vessels the exchange of material is possible between the cells and the blood.
Question 4
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What is true about RBCs in human?

A
They transport $$99.5\%$$ of $$O_2$$

B
They transport $$80\%$$ oxygen, the rest $$20\%$$ being transported by plasma

C
They do not carry $$CO_2$$ at all

D
They carry $$20-25\%$$ of $$CO_2$$

Solution

The correct answer is D
Nearly 20 to 25% Carbon dioxide is transported by RBC in the form of carbaminohemoglobin ;70% is carried as bicarbonates and 7% in the dissolved form in the plasma.
Question 5
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The coagulation of blood occurs due to

A
Destruction of erythrocytes.

B
Destruction of leucocytes.

C
Change of fibrinogen into fibrin.

D
Formation of serum.

Solution

The mechanism of blood clotting involves The presence of calcium and other clotting factors, Factor X activates an enzyme called prothrombin activator. The enzyme prothrombin activator then converts plasma protein prothrombin into thrombin. Thrombin is the enzyme which in turn converts fibrinogen into fibrin. Polymerized fibrin together with platelets forms a clot at the wound site. Hence The coagulation of blood occurs due to change of fibrinogen into fibrin.
So, the correct answer is 'Change of fibrinogen into fibrin'.
Question 6
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Thrombokinase is produced in

A
RBC

B
WBC

C
Blood vessels

D
Blood clotting

Solution

Thrombokinase is also known as thromboplastin. It is a complex enzyme which aids in clotting of blood. It is present in platelets and some body tissues. When the platelets aggregate at the site of injury, thrombokinase is released from platelets and damaged tissues. Thrombokinase converts prothrombin into thrombin which acts as an enzyme and converts fibrinogen into fibrin threads. The fibrin threads form a clot at the site of injury. Hence thrombokinase is produced in blood clotting.
So, the correct answer is 'Blood clotting'
Question 7
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The cells which do not respire.

A
Epidermal cells

B
Sieve cells

C
Cortical cells

D
Erythrocytes

Solution

Since erythrocytes are devoid of nucleus and organelles including mitochondria, they cannot carry out the process of respiration. Thus, they do not consume any oxygen during transportation.
So, the correct option is 'Erythrocytes'.
Question 8
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Largest erythrocytes occur in

A
Llama

B
Whale

C
Amphiuma

D
Musk Deer

Solution

The blood cells are of three major types they are erythrocytes(RBC), leucocytes(WBC) and platelets. Erythrocytes are also called red blood cells due to the presence of the iron-containing protein called Haemoglobin. In llamas, the erythrocytes have a unique shape with high hemoglobin content. Largest erythrocytes occur in Llama.
So, the correct answer is 'Llama'.
Question 9
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RBC count is carried out by ______________.

A
Haemocytometer

B
Haemoglobinometer

C
Sphygmomanometer

D
Electrocardiogram

Solution

The haemocytometer is a counting-chamber device originally designed and usually used for counting blood cells. The hemocytometer was invented by Louis-Charles Malassez and consists of a thick glass microscope slide with a rectangular indentation that creates a chamber. Hemocytometer remains the most common method used for cell counting around the world. The most frequently used haemocytometer is the Neubauer (or ‘Improved Neubauer’) chamber. Other haemocytometers include the Burker, Thoma and Fuchs-Rosenthal. Using these, the particles (e.g., leucocytes, erythrocytes, thrombocytes, bacteria, fungus spores, pollen) are visually counted under a microscope.

So, the correct answer is 'Haemocytometer'.
Question 10
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Which of the following blood cells help in blood coagulation?

A
RBCs

B
Lymphocytes

C
Thrombocytes

D
Basophils

Solution

Thrombocytes are pieces of very large cells in the bone marrow called megakaryocytes. They help form blood clots to slow or stop bleeding and to help wounds heal.

So, the correct answer is 'Thrombocytes'.

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Body Fluids and Circulation Test - 41

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Body Fluids and Circulation Test - 41

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Question 1

A vein starts from an organ and ends up in heart.

A vein starts from an organ and ends up in another organ.

A vein starts from heart and ends up in lungs.

None of the above.

Solution

Question 2

Stomach

Intestine

Rectum

Artery

Solution

Question 3

That connects the artery and vein

That connects the artery with lymphatic vessel

That connects arteriole with venule

That connects venule with lymph vessel

Solution

Question 4

They transport $$99.5\%$$ of $$O_2$$

They transport $$80\%$$ oxygen, the rest $$20\%$$ being transported by plasma

They do not carry $$CO_2$$ at all

They carry $$20-25\%$$ of $$CO_2$$

Solution

Question 5

Destruction of erythrocytes.

Destruction of leucocytes.

Change of fibrinogen into fibrin.

Formation of serum.

Solution

Question 6

RBC

WBC

Blood vessels

Blood clotting

Solution

Question 7

Epidermal cells

Sieve cells

Cortical cells

Erythrocytes

Solution

Question 8

Llama

Whale

Amphiuma

Musk Deer

Solution

Question 9

Haemocytometer

Haemoglobinometer

Sphygmomanometer

Electrocardiogram

Solution

Question 10

RBCs

Lymphocytes

Thrombocytes

Basophils

Solution

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