Circulatory System
Circulatory System: Overview
This topic covers concepts, such as, Relationship between Heartbeat and Pulse Rate, Transportation in Sponges, Type of Blood cells & Pulse etc.
Important Questions on Circulatory System
Name the different parts of the heart.

What are platelets?

What is pulse rate?

Name two organs of human circulatory system.

_____ contain haemoglobin.

Give an answer in one or two words.
Red blood pigments in the blood.

Why RBC doesn't have nucleus?

What does RBC stand for?

Oxygen, mostly, is carried by a pigment in our blood whereas carbon dioxide is transported in dissolved form in our blood.
Give two reasons that make the above statement correct.

What type of blood is found in four chambers of the human heart?

What are plasma and corpuscles?

What is the average body pulse?

Diastole is the contraction phase of the heart muscle.


The period of contraction of heart chambers is called

Explain the importance of contraction of heart muscle.

Nitrogenous waste urea is excreted out in the form of _____ in Hydra.

Name the following:
Organism that do not have circulatory system.

How transportation took place in Hydra.

The relaxation phase of the heart is called:
