Circulatory System

Which organ is called the graveyard of RBCs?

• Liver

• Spleen

• Kidney

• Thymus

The heart is derived from which germinal layer?

• Ectoderm

• Mesoderm

• Endoderm

• Mesoglea

What is Coronary Artery Disease also known as?

• Hypertension

• Arteriosclerosis

• Atherosclerosis

• Angina

Which of the following represents the depolarisation of the ventricles?

• P-wave

• T-wave

• QRS complex

• PQ interval

What is acute chest pain known as?

• Atherosclerosis

• Arteriosclerosis

• Angina pectoris

• Hypertension

What is the covering of the heart known as?

• Meninges

• Pleura

• Pericardium

• Peritoneum

Lymphocytes constitute how much per cent of the total WBCs?

• 10-15%

• 20-25%

• 40-50%

• 56%

Which of the following is not secreted by basophils?

• Histamine

• Serotonin

• Heparin

• Serum

In humans, ____________ is the difference between systolic and diastolic pressure.

• 80 mm Hg

• 60 mm Hg

• 40 mm Hg

• 20 mm Hg

Which of the following are the most abundant in WBCs?

• Neutrophils

• Basophils

• Eosinophils

• Lymphocytes