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Blood Circulation

Heart and Blood Circulation Transportation in Animals

15 Questions Published
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Questions

Question 1 Multiple Choice (Single Answer)

Which of the following is the most muscular chamber of the human heart?

  1. Left atrium
  2. Right ventricle
  3. Right atrium
  4. Left ventricle
  5. All are equally muscular
Question 2 Multiple Choice (Single Answer)

The membranous outer covering of the heart is known as

  1. meninx
  2. peritoneum
  3. myocardium
  4. pericardium
  5. endocardium
Question 3 Multiple Choice (Single Answer)

Which of the following are serum proteins?

  1. Albumin and globulins
  2. Albumins only
  3. Globulin and fibrinogen
  4. Albumin, globulin and fibrogen
  5. Globulin only
Question 4 Multiple Choice (Single Answer)

Which of the following is an incorrect statement?

  1. Mature mammalian erythrocytes are enucleated.
  2. Formation of RBC's is known as Erythropoiesis.
  3. A hormone called Erythropoietin regulates the production of RBC's.
  4. RBC's arise from haemocytoblasts in the stem cells of bone marrow.
  5. The lifetime of RBC's is about 120 days.
Question 5 Multiple Choice (Single Answer)

The mitral valve is present

  1. between the right auricle and right ventricle
  2. between the inferior vena cava and right auricle
  3. between the left auricle and left ventricle
  4. between the left auricle and right auricle
  5. between the aorta and left ventricle
Question 6 Multiple Choice (Single Answer)

The percentage of erythrocytes in total blood volume is called ______.

  1. hematocrit
  2. hematoma
  3. haemocrit
  4. haemocoel
  5. hemophilia
Question 7 Multiple Choice (Single Answer)

Which cation is required in blood coagulation for the conversion of prothrombin into active thrombin?

  1. Ca2+
  2. Mg2+
  3. Fe2+
  4. Mn2+
  5. Zn2+
Question 8 Multiple Choice (Single Answer)

Anemia is not caused by

  1. blood loss from the body
  2. inadequate secretion of erythropoietin
  3. polycythemia
  4. excessive destruction of erythrocytes
  5. bone marrow failure
Question 9 Multiple Choice (Single Answer)

The pulmonary trunk originates from ___________.

  1. right auricle
  2. left auricle
  3. right ventricle
  4. left venrticle
  5. the lungs
Question 10 Multiple Choice (Single Answer)

Which of the following statements is incorrect?

  1. Erythrocytes are destroyed in the spleen and liver.
  2. Folic acid and vitamin B12 are essential for erythrocyte formation.
  3. Granulocytes and agranulocytes are both types of thrombocytes.
  4. Thrombocytes are essential for blood coagulation.
  5. Erythrocytes are formed in the bone marrow.
Question 11 Multiple Choice (Single Answer)

Where are the unidirectional valves present?

  1. Arteries
  2. Veins
  3. Venules
  4. Capillaries
  5. All of the above
Question 12 Multiple Choice (Single Answer)

What causes the first heart sound or the "lub"?

  1. The sound of blood rushing out of the ventricles
  2. The closing of the mitral and tricuspid valves
  3. The closing of the pulmonary and aortic valves
  4. The sound of blood rushing into the auricles
  5. None of the above
Question 13 Multiple Choice (Single Answer)

When does the auricles contract?

  1. During atrial systole
  2. Before atrial systole
  3. During atrial diastole
  4. Before atrial diastole
  5. After atrial diastole
Question 14 Multiple Choice (Single Answer)

The life span of WBC is approximately

  1. between 20 to 30 days
  2. between 80 to 100 days
  3. less than 10 days
  4. between 2 to 3 days
  5. more than a month
Question 15 Multiple Choice (Single Answer)

Which of the following is formed by the joining of capillaries?

  1. Veins
  2. Arteries
  3. Venules
  4. Valves
  5. None of the above
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