Advertisements
Advertisements
Question
Give reason for the following:
Atrial wall is less muscular than the ventricular wall.
Advertisements
Solution
Atrial wall is less muscular than the ventricular wall because the major function of atria is
to receive blood from the body and pump in into very next ventricles. While the ventricles
pump the blood out of the heart. Right ventricle to the lungs and the left ventricle to all the
body parts.
RELATED QUESTIONS
State the exact location of the Chordae tendinae
The cells in our blood which destroy disease-causing germs are ______.
Fill in the blank:
The blood vessels which carry blood from the heart to different parts of the body are called ______.
Match the statements in Column A with those in Column B
| Column A | Column B | ||
| 1 | Heart | a | Movement of materials |
| 2 | Food and oxygen | b | Channels for transport in man |
| 3 | Carrier of oxygen | c | A living pump |
| 4 | Circulation | d | Materials needed by every living being |
| 5 | Arteries and veins | e | Red blood cells |
Describe the functions of the: Blood vessels
Draw the structure of human heart and label its parts
Given below is a schematic representation of the circulatory system in man. Study the same and answer the questions that follow:
(i) Label the parts 1 to 4 indicated in the diagram.
(ii) Give one difference between parts 1 and 2 based on:
(a) their structure
(b) the nature of blood flowing through them.
(iii) What is the specific name of the type of blood circulation that takes place between the heart and the lungs?
(iv) Name the valve found at the beginning of the part labeled 3.
The process of keeping the blood flowing continuously throughout the body.
Blood is produced in the bone marrow.
______ is a granulocyte.
