Body Fluids and Circulation - Online Test
Q1. The cardiovascular centre is located in :
Answer : Option A
Explaination / Solution:
The cardiovascular centre is a part of the human brain responsible for the regulation of the rate at which the heart beats through the nervous and endocrine systems. It is found in the medulla oblongata.
Q2. Prothrombin plays crucial role in blood coagulation and vitamin K is considered essential for blood clotting, now read the following :
i. Vitamin K is necessary for synthesis of prothrombin in liver.
ii. Vitamin K is necessary for synthesis of prothrombin in bone marrow.
iii. Vitamin K is necessary for conversion of prothrombin into active thrombin.
i. Vitamin K is necessary for synthesis of prothrombin in liver.
ii. Vitamin K is necessary for synthesis of prothrombin in bone marrow.
iii. Vitamin K is necessary for conversion of prothrombin into active thrombin.
Answer : Option B
Explaination / Solution:
Prothrombin plays crucial role in blood coagulation and vitamin K is essential for blood clotting. Vitamin K is necessary for synthesis of prothrombin in liver.
Q3. Mayank stood still for a long time and he felt swelling of feet. What would you suggest him :
Answer : Option D
Explaination / Solution:
During long hours of standing still swelling of feet is observe due to accumulation of blood in lower limb due to gravitation effect. This can be corrected by jerk or wriggle of legs to restart circulation properly.
Q4. Angina pectoris is very often mistaken for :
Answer : Option C
Explaination / Solution:
Angina pectoris is the sensation of chest pain, pressure or squeezing or pain in the centre of the chest. These symptoms are often mistaken by indigestion.
Q5. The list of risk factors associated with hypertension doesn’t include :
Answer : Option A
Explaination / Solution:
Hypertension can cause a number of effects on the functioning of different vital functions but hypertension does not associated with hypoglycemia and diabetes insipidus.
Q6.
Match the following:
column A
a) Atherosclerosis
b) Haemorrhage
c) Heparin
d) Polycythemia
column B
i) Hypotension
ii) High blood pressure
iii) Abnormal increase in RBC count
iv) Anticoagulant
Answer : Option B
Explaination / Solution:
Antherosclerosis leads to high blood pressure, haemorrhage causes hypotension, heparin is used as anticoagulant and polycythemia causes abnormal increase in RBC count.
Q7.
When a person suffers from chest pain :
i. the reason for this suffering is decreased blood flow and simultaneously lowered oxygen supply to an area of the heart.
ii. deprived of oxygen, myocardium opts for alternative pathways i.e. anaerobic respiration and its byproduct ethanol causes the pain.
Answer : Option D
Explaination / Solution:
A symptom of acute chest pain appears when no enough oxygen is reaching the heart muscle.
Q8. As Soham, ages with chronic CAD the lumen of his coronary artery may get nearly completely obstructed Result is flow of blood to heart tissue is restricted such that the tissue receives inadequate supply of oxygen rich blood and this condition is diagnosed as :
Answer : Option C
Explaination / Solution:
In case of chronic CAD, the lumen of coronary artery may get nearly completely obstructed that results into restricted flow of blood to heart. The tissue receives inadequate bloods called myocardial ischemia.
Q9. Meghna suffers from allergic asthma. After a blood test her leucocyte count displayed an abnormal increase in the number of :
Answer : Option B
Explaination / Solution:
An absolute eosinophil count is a blood test that measures the number of white blood cells called eosinophils. Eosinophils become active when you have certain allergic diseases infections, and other medical conditions.
Q10. For a healthy individual, calculate stroke volume for him if other values are; heart beat per minute = 72 and cardiac output is 5 litre?
Answer : Option B
Explaination / Solution:
E Stroke volume of healthy individual can be calculated by dividing cardiac output by number of heart beat per minute. So stroke volume = 5/ 72 = 0.0694.
