Cells Essay

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1. 2. 3. Cells require amino acids, vitamins, minerals, glucose, and fatty acids. Cells need glucose for energy, amino acids to make proteins, fatty acids to make the cell membrane and hormones. Basically, the cells need these items to maintain itself in energy, regulation, and structure; just like how you need food to maintain your energy, regulate your body's needs, and reinforce it's structure. 4. There are 2 main wastes that the cell produce, and they are carbon dioxide from cellular respiration, and urea (the stuff in urine) . 5. Nutrients enter the bloodstream through digestion process. When food or drinks are consumed, the body breaks down the molecules and nutrients through chemical reactions. As the nutrients are digested, they are carried through the digestive track by muscular contractions. The nutrients cross over to the blood stream via capillaries within the bowel and are distributed to the rest of the blood stream. 6. The Excretory System of humans is made up of 4 structures: Two kidneys, two ureters, a bladder, and the urethra. The kidneys act as a filter to filter the waste products from the blood, the ureters are tubes that transport the main waste products (urine) from the kidneys to the bladder, where it is stored until it is excreted out of the body through the urethra. 7, 8. Red blood cells/Erythrocytes: A mature blood cell hat contains hemoglobin to carry oxygen to the bodyily tissue White blood cells/Leukocytes: Fight infection Platelets/Thrombocytes: Helps blood to clot. 9. blood clotting is a process in which liquid blood is changed into a semisolid mass (a blood clot). Thrombosis: Local coagulation or clotting of the blood in a part of the circulatory system Clotting disorder: A defect in the body's mechanism for blood clotting, causing bleeding diathesis. Stroke: A sudden disabling attack or loss of consciousness

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