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Question

Name the process and the organ which helps in removing the following wastes from the body.

(a) Carbon dioxide (b) Undigested food (c) Urine (d) Sweat


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Solution

Removal of waste from the body:

The process and the organs which help in removing the following wastes from the body are enlisted below: -

WasteProcessOrgans
Carbon-dioxideExhalationLungs
Undigested foodEgestionAnus & Large Intestine
UrineExcretionKidney
SweatSweatingSweat Glands

Exhalation

  1. It is the passive act of breathing out air that has been inhaled.
  2. The diaphragm relaxes at this point and rises into the chest cavity.
  3. The area of the chest cavity shrinks as a result of the intercostal muscles between the ribs relaxing.
  4. After a while, the chest region shrinks, and the windpipe and nose eventually release carbon dioxide-rich air from the lungs.

Egestion

  1. Food that hasn't been digested into waste must be removed from the organism's body during the procedure.
  2. Discharged materials are undigested food and other toxic substances leftover from digestion.
  3. The mouth or the anus are the primary routes for egestion. (Animals like jellyfish ingest food and expel waste through their mouths.)
  4. Only animals undergo egestion.

Excretion

  1. Excretion is the process by which organisms eliminate harmful substances and metabolic waste from their bodies.
  2. By-products of both metabolic and non-metabolic processes include excretory products.
  3. Animal waste is divided into two categories: metabolic waste and non-metabolic waste.

Sweating

  1. Sweating is an involuntary action that is under the control of the autonomic nervous system.
  2. This is a part of thermoregulation (regulation of body temperature) in the body.
  3. Face, armpits, palms of hands, and soles of feet are certain common sweating areas.

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