Body Fluids and Circulation Test

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Body Fluids and Circulation Test - 63

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Weekly Quiz Competition

Question 1
1 / -0

Choose the schematic diagram, which properly represents pulmonary circulation in human.

A
Right ventricle $$ \xrightarrow [blood]{Deoxygenated}$$ Lungs $$ \xrightarrow [blood]{Oxygenated}$$ Left auricle

B
Right ventricle $$ \xrightarrow [blood]{Oxygenated}$$ Lungs $$ \xrightarrow [blood]{Deoxygenated}$$ Left auricle

C
Left ventricle $$ \xrightarrow [blood]{Oxygenated}$$ Lungs $$ \xrightarrow [blood]{Deoxygenated}$$ Right ventricle

D
Left auricle $$ \xrightarrow [blood]{Oxygenated}$$ Lungs $$ \xrightarrow [blood]{Deoxygenated}$$ Right ventricle
Solution
- The blood pumped by the right ventricle enters the pulmonary artery, whereas the left ventricle pumps blood into the aorta.
- The deoxygenated blood pumped into the pulmonary artery is passed on to the lungs from where the oxygenated blood is carried by pulmonary veins into the left atrium. This pathway constitutes the pulmonary circulation.
- The oxygenated blood entering the aorta is carried by a network of arteries, arterioles, and capillaries to the tissues from where the deoxygenated blood is collected by a system of venules, veins, and vena cava and emptied into the right atrium. This is the systematic circulation. This is how double circulation takes place.
So, the correct answer is 'A'.
Question 2
1 / -0

Which of the following carries glucose from digestive tract to liver?

A
Pulmonary vein

B
Hepatic portal vein

C
Hepatic artery

D
Data insufficient
Solution
- Hepatic portal vein carries nutrients, glucose and oxygen from the digestive tract to the liver. The liver regulates the blood glucose level before it is drained out in the systemic circulation.
So, the correct answer is 'Hepatic portal vein'.
Question 3
1 / -0

The graph of the electrical activity of heart versus time produced by the non-invasive medical procedure is called

A
Electroencephalogram

B
Electrocardiogram

C
Stethoscope

D
None of the above

Solution

A) Electroencephalogram (EEG) records the electrical activity of the brain. It is usually noninvasive, with the electrodes placed along the scalp.
B) Electrocardiogram (ECG) records the electrical activity of the heart over a period of time using electrodes placed over the skin.
C) The stethoscope is a medical device used for listening to the internal sounds of the human body.
D) The graph of the electrical activity of heart versus time produced by the non-invasive medical procedure is called Electrocardiogram.
So the correct answer is 'Electrocardiogram'.
Question 4
1 / -0

Choose the correct statement.

A
The T-wave in an ECG represents excitation of ventricles

B
The sum of P and T waves in a given time period can determine the heart beat rate of an individual

C
The end of the P-wave marks the end of the systole

D
In the standard ECG, a person is connected to the machine with three electrical leads.
Solution
Correct Option: D
Explanation:
D. In a standard ECG, a person is connected to the machine with three electrical leads
Reason:
T- wave represents ventricular repolarisation.
The number of QRS- complex in a given time period helps in determining the heart rate or pulse rate.
The P-wave represents the excitation of atria.
To obtain a standard ECG, the patient is connected to 3 electrical wires, one to each wrist and one to the left ankle.
Question 5
1 / -0

If in ECG, P-R interval is lengthened, it shows

A
Artheroscleroptic plaque

B
Heart attack

C
Acute myocardial infraction

D
Both A & B
Question 6
1 / -0

Read the following $$(A-D)$$:-
A. RBCs are the most abundant of all the cells in the blood.
B. A healthy adult man has an average of $$5$$ Billions to $$5.5$$ Billions of RBCs $$ /mm^{-3}$$ of blood.
C.RBCs are formed in the liver in adults.
D.RBCs are devoid of the nucleus in most mammals and are biconcave in shape.
How many of the above statements are incorrect?

A
$$4$$

B
$$3$$

C
$$2$$

D
$$1$$

Solution

A. RBCs are the most abundant of all the cells in blood because of their function to transport oxygen to the tissues.
B. A healthy adult man has on an average 4.5 to 5.9 million mm$$^{-3}$$ of RBCs in the blood.
C. In adults, the RBCs are formed in the red bone marrow.
D. In most mammals, the RBCs are devoid of the nucleus and are biconcave in shape.
Hence, the correct answer is '2.'

Question 7

1 / -0

What would happen if a person was placed in water at $$15^o$$ C over a short period of time in each of these areas ?

	peripheral circulation	Sweat glands	Liver	Skeletal Muscle
1	Increased blood flow	Increased Secretion	Decreased temperature	Decreased shivering
2	Increased blood flow	Decreased Secretion	Increase in temperature	Increased shivering
3	Decreased blood flow	Increased Secretion	No change in temperature	Increased shivering
4	Decreased blood flow	Decreased Secretion	No change in temperature	Increased shivering

Option 1

Option 2

Option 3

option 4

Solution

When the temperature surrounding the body decreases, vasodialation occurs and the blood flow to the skin increases, which in turn increases the body temperature.

When the temperature in the surrounding decreases,the thermoregulatory center's receptors do not receive any signals and hence sweat glands decrease their sectretion.

The liver is an important source of heat and its temperature also increases slightly due to the increased blood flow to maintain its temperature for the enzyme function.

The skeletal muscles increase shivering so that the friction helps in increasing the body temperature when the surrounding temperature rises.

Therefore, the answer should be,

Peripheral circulation - Increased blood flow

Sweat glands - Decreased secretion

Liver - Increased temperature

Skeletal Muscles - Increased shivering.

Question 8
1 / -0

In mammals, which of the following contains blood with the highest oxygen content?

A
Right atrium

B
Jugular vein

C
Pulmonary

D
Left ventricle

Solution

Blood, after getting oxygenated returns through pulmonary vein to the left atrium. From the left atrium, it enters into the left ventricle.
So, the correct answer is 'Left ventricle'
Question 9
1 / -0

Which one is smallest?

A
Eosinophil

B
Basophil

C
Neutrophil

D
Monocyte

Solution

A.Eosinophil - These cells are 10 - 15 µm in diameter

B.Basophils - They are 14-16 µm in diameter,

C.Neutrophil – The cells are 12 to 17 µm in diameter

D.Monocyte – The cells are 15 to 30 µm in diameter.
So, the correct option is ‘Eosinophils’.
Question 10
1 / -0

The blood cells with polymorphic nucleus are?

A
Granulocytes

B
Thrombocytes

C
Erythrocytes

D
All of these

Solution

Granulocytes are a category of white blood cells characterized by the presence of granules in their cytoplasm. They are also called polymorphonuclear leukocytes or polymorphonuclear neutrophils because of the varying shapes of the nucleus, which is usually lobed into three segments. These are granulocytes involved in fighting off pathogens, such as bacteria and fungi.
So the correct answer is 'Granulocytes'.

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Body Fluids and Circulation Test - 63

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Body Fluids and Circulation Test - 63

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Question 1

Right ventricle $$ \xrightarrow [blood]{Deoxygenated}$$ Lungs $$ \xrightarrow [blood]{Oxygenated}$$ Left auricle

Right ventricle $$ \xrightarrow [blood]{Oxygenated}$$ Lungs $$ \xrightarrow [blood]{Deoxygenated}$$ Left auricle

Left ventricle $$ \xrightarrow [blood]{Oxygenated}$$ Lungs $$ \xrightarrow [blood]{Deoxygenated}$$ Right ventricle

Left auricle $$ \xrightarrow [blood]{Oxygenated}$$ Lungs $$ \xrightarrow [blood]{Deoxygenated}$$ Right ventricle

Solution

Question 2

Pulmonary vein

Hepatic portal vein

Hepatic artery

Data insufficient

Solution

Question 3

Electroencephalogram

Electrocardiogram

Stethoscope

None of the above

Solution

Question 4

The T-wave in an ECG represents excitation of ventricles

The sum of P and T waves in a given time period can determine the heart beat rate of an individual

The end of the P-wave marks the end of the systole

In the standard ECG, a person is connected to the machine with three electrical leads.

Solution

Question 5

Artheroscleroptic plaque

Heart attack

Acute myocardial infraction

Both A & B

Question 6

$$4$$

$$3$$

$$2$$

$$1$$

Solution

Question 7

Option 1

Option 2

Option 3

option 4

Solution

Question 8

Right atrium

Jugular vein

Pulmonary

Left ventricle

Solution

Question 9

Eosinophil

Basophil

Neutrophil

Monocyte

Solution

Question 10

Granulocytes

Thrombocytes

Erythrocytes

All of these

Solution

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