Circulation In Animals

How many types of blood cells are present in blood?

• 3

• 4

• 2

• 5

In humans, right auricle receives _________ blood from __________

• oxygenated,aorta

• deoxygenated , vena cava

• oxygenated, vena cava

• deoxygenated, aorta

Where does the maximum exchange of material between blood and surrounding cells occur?

• Heart

• Veins

• Arteries

• Capillaries

Which vitamin helps in blood clotting?

• Vitamin A2

• Vitamin B

• Vitamin E4

• Vitamin K

Why does blood turn dark red as it circulates through the body?

• It starts to clot

• It gets dirty and old flowing through the body

• The oxygen in it is replaced by carbon dioxide

• None of these

Lymph differs from blood as it has

• Only RBC’s and no WBC’s

• More WBC’s and fewer RBC’s

• Only WBC’s and no RBC’s

• More RBC’s and fewer WBC’s

Which of the following ions is present in blood plasma in maximum concentration?

• Potassium

• Sodium

• Chloride

• Calcium

The human blood circulatory system is also known as

(a)  

(a)   separates the chambers of the heart.

(a)   vessels connect arteries to veins