Tag: blood circulatory system of human

Questions Related to blood circulatory system of human

Coronary heart disease is due to?

biology blood circulatory system of human cardiac disorders cardiac regulation and disorders the blood system

  1. Streptococci bacteria

  2. Inflammation of pericardium

  3. Weakening of the heart valves

  4. None of the above

Show answer
Correct Option: A

Myocardial infarction is caused by

biology blood circulatory system of human cardiac disorders cardiac regulation and disorders the blood system

  1. hardening of arteries

  2. lumpy thickness develop in the inner walls of arteries

  3. clot may occur in the lumen of coronary artery

  4. sudden interruption in blood flow towards a portion of heart

Show answer
Correct Option: C
Explanation:

A heart attack occurs when one of the heart's coronary arteries is blocked suddenly or has extremely slow blood flow. A heart attack also is called a myocardial infarction. The usual cause of sudden blockage in a coronary artery is the formation of a blood clot.

So, the correct answer is clot may occur in the lumen of coronary artery.

Read the following statements :-
(a) Rise in body temperature lead to bradycardia 
(b) Weak condition of the heart leads to tachycardia 
(c) strong condition off the heart leads to Tachycardia
(d) Loss of the blood leads to braycardia 
(e) Stimulation by sympathetic nerves leads to tachycardia 
(f) Exercise leads to bradycardia 
out of these how many statements are incorrect?

biology blood circulatory system of human cardiac disorders cardiac regulation and disorders the blood system

  1. Two

  2. Three

  3. Four

  4. Five

Show answer
Correct Option: B

Raju was showing the following symptoms heaviness in the chest, severe pain in the chest, also in the region of the neck, lower jaw, left arm and left shoulder. 


What does this indicate?

biology blood circulatory system of human cardiac disorders cardiac regulation and disorders the blood system

  1. Myocardial infarction

  2. Angina pectoris

  3. Atherosclerosis

  4. Arteriosclerosis

Show answer
Correct Option: A
Explanation:
  • The symptoms of myocardial infarction include heaviness and severe pain in the chest and neck region, lower jaw, left arm and left shoulder. 
  • Angina pectoris has symptoms of acute chest pain when not enough oxygen is reaching the heart muscle. 
  • Atherosclerosis affects the vessels that supply blood to the heart muscle which is caused by deposits of calcium, fat, cholesterol and fibrous tissues making the lumen of arteries narrower. 
  • Arteriosclerosis show symptoms like chest pain or pressure, sudden arm or leg weakness or numbness, slurred speech, high blood pressure, etc. 
  • So, the correct option is "Myocardial infarction".

Congestion of the lungs is one of the main symptoms in 

biology blood circulatory system of human cardiac disorders cardiac regulation and disorders the blood system

  1. Hypotension

  2. Coronary artery disease

  3. Angina

  4. Heart failure

  5. Atherosclerosis

Show answer
Correct Option: D
Explanation:

Heart failure means the state of heart, when it is not pumping blood effectively enough to meet the needs of the body. It is sometimes called congestive heart failure because congestion of the lungs is one of the main symptoms of this disease. Heart failure is not the same as cardiac arrest (when the heart stops beating) or a heart attack (when the heart muscle is suddenly damaged by an inadequate blood supply).

In Coronary Artery Bypass Grafting (CABG), in order to bypass the blocked region of the coronary artery surgeon uses?

biology blood circulatory system of human cardiac disorders cardiac regulation and disorders the blood system

  1. Only arteries from another part of body

  2. Only veins from another part of body

  3. Artery or a vein from another part of body

  4. Only artificial arteries made from porous plastic fibres of dacron or teflon

Show answer
Correct Option: A

Oxygen carrying capacity of human blood is reduced due to the pollution of 

biology blood circulatory system of human cardiac disorders cardiac regulation and disorders the blood system

  1. ${CO _2}$

  2. CO

  3. ${SO _2}$

  4. ${O _3}$

Show answer
Correct Option: B
Explanation:

Carboxyhemoglobin (COHb) is a stable complex of carbon monoxide and hemoglobin. It forms in red blood cells upon contact with carbon monoxide (CO). Large quantities of CO hinders the ability of Hb to deliver oxygen to the body. CO is produced in normal metabolism and is also a common chemical in smoke and industry and vehicular exhaust. Also, tobacco smoking (through carbon monoxide inhalation) raises the blood levels of COHb several times from its normal concentrations.

Abnormal enlargement of heart is 

biology blood circulatory system of human cardiac disorders cardiac regulation and disorders the blood system

  1. Angina pectoris

  2. Myocardial infarction

  3. Cardiomegaly

  4. None of the above

Show answer
Correct Option: C
Explanation:

Angina pectoris - It is the sensation of chest pain as a result of myocardial ischemia, caused by an imbalance between myocardial blood supply and oxygen demand. It is a common symptom among patients with coronary artery disease (CAD).
Myocardial infarction - commonly known as a heart attack, occurs when blood stops flowing properly to a part of the heart, and the heart muscle is injured because it is not receiving enough oxygen. Usually, this is because one of the coronary arteries that supplies blood to the heart develops a blockage due to an unstable buildup of white blood cells, cholesterol and fat.
Cardiomegaly - is a medical condition, which refers to the enlargement of heart.

Thus, the correct answer is option C. 

Which of the following forms stable compound with haemoglobin?

biology blood circulatory system of human cardiac disorders cardiac regulation and disorders the blood system

  1. $O _2$

  2. $CO _2$

  3. $CO$

  4. All of the above

Show answer
Correct Option: C
Explanation:

Carbon monoxide is an atmospheric pollutant present in vehicular exhaust and cigarette smoke. Carbon monoxide is a poisonous gas and reduces oxygen carrying capacity of blood. One molecule of hemoglobin combines with four molecules of carbon monoxide to form carboxyhemoglobin. The colour of carboxyhemoglobin is cherry red. 

Which disorder is due to gene incompatibility?

biology blood circulatory system of human cardiac disorders cardiac regulation and disorders the blood system

  1. Erythroblastosis fetalis

  2. Jaundice

  3. Hemolytic disease of new born

  4. Both A and C

Show answer
Correct Option: D
Explanation:

Erythroblastosis fetalis is a hemolytic anemia in the fetus caused by the transplacental transmission of maternal antibodies to the fetal RBCs. In this alloimmune condition that develops in the fetus, the IgG molecules produced by the mother pass through the placenta and so is because of incompatibility.
Jaundice is caused because of the excess of bilirubin in the blood.
Therefore, the correct answer is option D.