MdmRiza came back to go through with us about transport in humans before our exams.So this is my 3.2.1 reflection of the lesson.
3 Things I Learnt
I learnt that our blood is made up of mainly four substances:red blood cells,white blood cells,platelets and plasma.The red blood cells carry oxygen around the body while the white blood cells kills germs and bacteria in our blood cells.The platelets in our body clot up cuts in our skin so that we do not lose excessive blood and the plasma carries waste materials and carbon dioxide.
2 Questions
I'm wondering how do the white blood cells kills germs.Do they release a substance to kill them?Another question is that how is our heart able to pump blood without stopping?Our other muscles will get tired after some time of exercising and such but how does our heart continue?
1 Useful Application
One useful application is that now I know what is in my blood and what are the uses and functions of my circulatory system and this helps understand my body more
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