Excretory System, Digestion and Nutrients Flashcards
what is excretion?
The process of discharging waste matter from the body.
Name four ways we excrete waste
urine, sweating, nasal discharge, tears
How much blood do kidneys filter in an hour?
6-7.5 liters per hour and 150-180 liters per day.
What gives urine the yellow colour?
Urine gets its yellow colour from a pigment called urochrome. That color normally varies from pale yellow to deep amber, depending on the concentration of the urine. Darker urine is usually a sign that you’re not drinking enough fluid.
What is dialysis?
The clinical purification of blood by dialysis, as a substitute for the normal function of the kidney. It is the process which does the work of your kidneys when the kidneys are unable to do it for themselves.
Label this diagram.
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Place these in the order through which fluid flows: Urethra, kidney, ureter, bladder
Kidney
Ureter
Bladder
Urethra
What is respiration?
The act of breathing exchanging gases used to help the body function.
How do waste products get to the lungs and kidneys?
it is carried by the plasma to the kidney and by the RBC to the lungs.
Where does the urethra exit from the male body?
The meatus at the tip of the penis.
Why is kidney failure life-threatening
It is life threatening because the kidneys role is to filter the waste from our blood
How is urea produced?
It is the breakdown of the protein ammonia which is highly toxic. It is broken down in the liver and turned into urea and uric acid which are less toxic.
How is water produced?
Water isn’t produced its recycled.
How is carbon dioxide produced?
Carbon dioxide is produced when any substance containing carbon is burned. It is also a product of breathing and fermentation.
What are nutrients?
Nutrients (food) are the chemicals that our bodies need so that they can produce energy for our daily activities. They are also the chemicals we need for growth and repair of our cells.
