Main Idea/Concept:
Blood is the life fluid that carries nourishment to all parts of the body. It is circulated throughout the body with the heart as its engine. Clean or new blood leaves the heart through the arteries and returns via veins which first go through a cleansing process in the lungs after picking up dead cells and waste etc from all parts of the body. Blood accounts for 1/10 a human’s body weight (in muscles, in circulatory –heart, lungs, arteries and veins, in tissues/organs, in the liver) (1/5 of all blood is utilized by the brain).
- Blood starts it journey in the arteries and branches outward from there down other canals, getting smaller and smaller until it is in the capillaries –
- Capillaries - resembling very tiny blood vessels – this brings the blood in close contact with the tissues – ex skin or tissues surrounding organs etc. The journey of waste, dead cells etc starts in the capillaries – continuing on through the veins.
- Lymph is another fluid that circulates through the system and resembles blood. It mingles with the blood in the large veins on its return to the heart
- Blood is what each of us make it in our body – as it is determined by the food we eat
New Concept:
I found it interesting just how much blood is in our bodies
Questions:
-How much blood surrounds the spinal cord? –Where and how does it surround it or nourish it?
