Waste Removal
Cell vs. Human Organism
Human Waste Removal
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Excretory (Urinary) System
Digestive System
Respiratory System
Integumentary System
Human Excretory (Urinary) System
• Kidneys - The human kidneys are the major
organs of bodily excretion. The product of the
kidneys is urine.
Kidney Function
• The kidneys filter the bloodstream in order to
get all of the toxins out of your body, and also
regulate certain body fluids.
• Kidneys are vital organs that function to keep
the blood clean and maintain chemical
balance within.
Human Digestive System Also Gets Rid
of Waste
• Liver - filters out harmful substances and
turns them into bile.
• Food travels to the esophagus, stomach and
intestines. After most of the nutrients are
removed from the food mixture there is waste
left over — this excess exits the body through
the anus in the form of stool.
Digestive System
Human Respiratory System
• Rids the body of the cellular waste carbon
dioxide.
Integumentary System (Skin)
• Sweat rids the body of extra salts and some
other impurities.
How Cells Get Rid of Waste
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Vacuole
Lysosome
Diffusion
Also note that in cellular respiration, the
mitochondria takes in Oxygen + Glucose and
releases ATP (energy), Water (waste) and
Carbon Dioxide (waste)
Cell Vacuole
• Vacuole – membrane-bound sac that plays
roles in intracellular digestion and the release
of cellular waste products. In animal cells,
vacuoles are generally small.
Cell Lysosome
• Lysosome - they digest worn out or excess
organelles, food particles and viruses or
bacteria. They fuse with vacuoles and
dispense their enzymes into those vacuoles,
digesting their contents.
Cell Diffusion
• Diffusion takes away the waste carbon
dioxide produced by the cell. Diffusion is
simply the movement of substances from an
area of higher concentration to an area of
lower concentration.