CBC Grade 7 Notes in Kenya Circulatory system parts
The circulatory system (cardiovascular system) acts as the body’s primary transport network, utilizing the heart to pump blood through vessels to deliver oxygen, nutrients, and hormones to cells while removing waste products like carbon dioxide. It maintains homeostasis, regulates body temperature, and supports immune responses
Definition of Circulatory system?
The system that contains the heart and the blood vessels and moves blood throughout the body
Definition of Circulatory system?
This is the organ that pumps blood through out the body. It is muscular and placed between the lungs somewhere slightly to the left side of the body. The strong muscles of the heart can relax or contract when contracting the heart pumps blood with force. When the heart relaxes, the blood flows into chambers of the heart.
The contracting and relaxing of the heart is what is known as the heart beat.
a) Blood
When we are cut or injured there is a liquid which is red that flows out of the cut or injured part of the body. This is blood which contains water, blood cells, digested food, waste products and hormones which control growth and the other body activities
b) Blood Tissues
The tubes that contain the blood are called blood vessels. They carry blood to all parts of the body.
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