Tag: evs - i

Questions Related to evs - i

Consider the following statements.
1. ECG (electrocardiogram) is a test that measures the electrical activity of the heart.
2. ECG is used to measure the rate and regularity of heart beats.
Which of the statement(s) given above is/are correct?

evs - i busy at work - our internal organs human lymphatic system lymph and its function lymph and tissue fluid

  1. Only 1

  2. Only 2

  3. Both 1 and 2

  4. None of the above

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Correct Option: C

Which of the following statement/s is/are correct?
1. Coronary artery supplies blood to heart muscles.
2. Pulmonary vein supplies blood to lungs.
3. Hepatic artery supplies blood to kidneys.
4. Renal vein supplies blood to kidneys.

evs - i busy at work - our internal organs human lymphatic system lymph and its function lymph and tissue fluid

  1. 1 , 2 and 3

  2. Only 1

  3. 2 and 4

  4. 1 , 3 and 4

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Correct Option: B

Study the following statements: 
1. Heparin is synthesized in the liver.
2. The pacemaker of the human heart is SA node.
3. The decrease in WBC conditions leads to leukopenia.
Which of the statements given above are correct?

evs - i busy at work - our internal organs human lymphatic system lymph and its function lymph and tissue fluid

  1. 1 , 2 and 3

  2. 1 and 2

  3. 1 and 3

  4. None of these

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Correct Option: A

Consider the following statements: 
1. The force that blood exerts force against the wall of a vessel is called blood pressure. 
2. The pressure of blood inside the artery during contraction is called systolic pressure and pressure in an artery during relaxation is called diastolic pressure. 
3. Blood pressure is measured with an instrument called sphygmomanometer.
Which of the statements given above are correct?

evs - i busy at work - our internal organs human lymphatic system lymph and its function lymph and tissue fluid

  1. 1 and 2

  2. 1 and 3

  3. 2 and 3

  4. 1 , 2 and 3

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Correct Option: D

With which of the physiological process, thrombin is associated ?

evs - i busy at work - our internal organs human lymphatic system lymph and its function lymph and tissue fluid

  1. Excretion

  2. Blood clotting

  3. Reproduction

  4. Growth

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Correct Option: B

The largest artery in human body is

evs - i busy at work - our internal organs human lymphatic system lymph and its function lymph and tissue fluid

  1. Aorta

  2. Capillary

  3. Vena cava

  4. Pulmonary vein

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Correct Option: A

Which one of the following vitamins has a role in blood clotting?

evs - i busy at work - our internal organs human lymphatic system lymph and its function lymph and tissue fluid

  1. Vitamin A

  2. Vitamin D

  3. Vitamin E

  4. Vitamin K

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Correct Option: D
Explanation:
A. Vitamin A takes part in the formation of visual retinal pigments like rhodopsin, iodopsin etc. and thus, it is required for normal vision.
B. Vitamin D regulates the metabolism of calcium and phosphorus and in turn affects the growth of body by affecting the growth of bone and teeth.
C. Vitamin E is necessary for maintaining sterility.
D. Vitamin K is necessary for the formation of prothrombin (important component of blood clotting mechanism) in the liver of human beings and thus, it is involved in clotting of blood.
So, the correct answer is 'Vitamin K'.

Which of the following disease is caused when plaque blocks the arteries which supply blood to the heart?

evs - i busy at work - our internal organs human lymphatic system lymph and its function lymph and tissue fluid

  1. Coronary heart disease

  2. Haemophilia

  3. Arthritis

  4. Leukemia

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Correct Option: A
Explanation:

Coronary artery disease develops when the major blood vessels that supply our heart with blood, oxygen, and nutrients become damaged or diseased. The disease is caused when plaque blocks the arteries which supply blood to the heart.

The blood of many animals is red because of the presence of this pigment containing iron. What is it called?

evs - i busy at work - our internal organs human lymphatic system lymph and its function lymph and tissue fluid

  1. Chlorophyll

  2. Haemoglobin

  3. Biliverdin

  4. Bilirubin

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Correct Option: B
Explanation:

Hemoglobin is a protein present in the red blood cells. The hemoglobin carries oxygen in the blood and transfers it in our body, it is the element that gives red color to our blood. Iron works as a booster towards hemoglobin production in the blood.

Complete digestion takes place in which part of cockroach?

evs - i busy at work - our internal organs human lymphatic system lymph and its function lymph and tissue fluid

  1. In crop

  2. In Gizzard

  3. In stomach

  4. In oesophagous

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Correct Option: C
Explanation:

Cockroaches belong to phylum Arthropoda which has well developed the digestive system. The digestion of starch in the buccal cavity is followed by complete grinding of food in crop and gizzard which finally enters the stomach. The digestive enzymes secreted by the gastric caeca act upon the food in the stomach. These enzymes include amylase, maltase, invertase, tryptase and lipase. The remaining carbohydrates, proteins and fats are digested here.The digested food is absorbed through the stomach walls into the surrounding space which is called the haemocoel. The haemocoel consists of a large number of fat bodies which are fat cells having fat globules, protein granules and glycogen. They form storage structures which transport to different parts of the body. So, the correct answer is option C.