1. Red cell count is carried out by _________
a) Electrogram
b) Sphygmomanometer
c) Haemoglobinometer
d) Haemocytometer
Explanation: Haemocytometer is a device designed and used for counting blood cells. It was invented by Louis Charles Malassez.
2. Blood is five times more viscous than distilled water.
a) True
b) False
Explanation: When hematocrit raised to 60% or 70% the blood viscosity can become as great as 5 to 6 times that of water and it flows through blood vessels is greatly retarded because of increased resistance to flow
3. Which of the following is the thinnest blood vessel?
a) Artery
b) Arterioles
c) Meta Arterioles
d) Capillary
Explanation: Capillary is the thinnest blood vessel order of 10µm in diameter. Each capillary is lined with simple layer of flat cells called endothelium.
4. The arteries are composed of _________ coat.
a) 2
b) 1
c) 3
d) 4
Explanation: The arteries are composed of 3 coats. They are as follows:-
- An internal or endothelial coat
- External or connective tissue coat
- A middle or muscular coat.
5. What is the study of blood vessels called?
a) Pulmonology
b) Electrophysiology
c) Angiology
d) Cardiology
Explanation: Angiology is the medical specialty which studies the diseases in the circulatory system and blood vessels.
6. Which of the following has the thickest wall?
a) Right ventricle
b) Left ventricle
c) Right auricle
d) Left auricle
Explanation: Left ventricle is one of the four chambers of the heart. The left ventricle has a thicker wall than right ventricles because the left ventricle has to pump blood all the way around the body but right ventricle only has to pump it to the lungs.
7. Pulmonary vein carries ________
a) Deoxygenated blood
b) Mixed blood
c) Oxygenated blood
d) Pure blood
Explanation: Pulmonary vein carries Oxygenated blood from lungs to the heart. The largest pulmonary veins are the four main pulmonary veins two from each lung that drain into the left atrium of the heart
8. The artery is blood vessel which carries blood _______
a) Away from the heart
b) Towards the heart
c) Has deoxygenated blood without exception
d) Mixed blood
Explanation: The arteries are the blood vessels that deliver oxygen rich blood from heart to other organs of the body. Artery is a muscular tube lined by smooth tissues and has three layers.
9. Frog heart: 3 chambered:: Human heart: ____________
a) 2
b) 3
c) 4
d) 1
Explanation: Human heart is four chambered. It has two auricles and two ventricles.
10. Musculi pectinatis are ridges present inside auricles.
a) True
b) False
Explanation: Musculi pectinatis are parallel ridges in the walls of atria of the heart. They are so called because of their resemblance to the teeth comb as in pecten.