Why are capillaries so thin?

Important Questions on Human Body-Circulatory System

HARD

8th ICSE

IMPORTANT

Innovative Biology>Chapter 7 - Human Body-Circulatory System>EVALUATE YOUR UNDERSTANDING>Q II

Name the types of blood groups present in humans.

EASY

8th ICSE

IMPORTANT

Innovative Biology>Chapter 7 - Human Body-Circulatory System>EVALUATE YOUR UNDERSTANDING>Q II

What are the four chambers of the heart in human beings?

MEDIUM

8th ICSE

IMPORTANT

Innovative Biology>Chapter 7 - Human Body-Circulatory System>EVALUATE YOUR UNDERSTANDING>Q II

What is the function of lymph nodes?

EASY

8th ICSE

IMPORTANT

Innovative Biology>Chapter 7 - Human Body-Circulatory System>EVALUATE YOUR UNDERSTANDING>Q III

What is the function of pericardial fluid? Where is it found? 

MEDIUM

8th ICSE

IMPORTANT

Innovative Biology>Chapter 7 - Human Body-Circulatory System>EVALUATE YOUR UNDERSTANDING>Q III

What are the functions of different types of blood vessels?

MEDIUM

8th ICSE

IMPORTANT

Innovative Biology>Chapter 7 - Human Body-Circulatory System>EVALUATE YOUR UNDERSTANDING>Q III

Explain double circulation of blood. Why is it called so? Why is it necessary?

MEDIUM

8th ICSE

IMPORTANT

Innovative Biology>Chapter 7 - Human Body-Circulatory System>EVALUATE YOUR UNDERSTANDING>Q III

Arteries have thick muscular walls but veins have thin walls. Why?

MEDIUM

8th ICSE

IMPORTANT

Innovative Biology>Chapter 7 - Human Body-Circulatory System>EVALUATE YOUR UNDERSTANDING>Q III

Why is the heart not fatigued even though it beats non-stop throughout the life of an individual?