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Science U2L5

QuestionAnswer
The circulatory system is... ...the system of organs which circulates your blood
Right atrium Collects de-oxygenated the blood from the head and body and pumps it to the right ventricle
Right ventricle Pumps de-oxygenated blood through the pulmonary valve into the pulmonary artery to the lungs
Left atrium Collects oxygenated blood from the lungs through the mitral valve into the left ventricle
Left ventricle Pumps the oxygenated blood through the aortic valve into the aorta to the body
Arteries Blood vessels that carry the blood away from the heart to all the body's cells
Veins Blood vessels that carry the blood from all the body's cells back to the heart
Capillaries Smallest blood vessels that surround the body's cells blood: Tissue that carries nutrients and wastes in the circulatory system
Red blood cells Part of the blood that gives it its red colour and carries oxygen to the cells
White blood cells part of the blood that fights disease
Platelets Part of the blood that stops the flow of the blood from a cut
Excretion The work that the kidneys do to rid the body of wastes in the blood
Kidneys Part of the excretory system that rids the blood of wastes and maintains the balance of water in the body
Nephron Smallest part inside the kidney that actually filters the blood of its wastes
Neurons Cell that makes up the nervous system
Reflex Fast reaction to a stress or pain by the nervous system
The excretory system is... the system of organs that remove wastes from your body
Liver The liver takes the highly toxic ammonia produced by the body's cells out of the bloodstream and converts it into a less harmful substance called urea.
The kidneys The kidneys are the main organs of excretion; they act as filters to the blood, straining out the unwanted urea, water, and other salts, and they produce urine.
Ureters Long tubes that connect the kidneys to the bladder.
Bladder A sac covered in muscle tissue. As urine enters the bladder, the bladder expands.
Created by: MUFU
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