Excretory System
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The Human Excretory System: Functions, Parts, and Role in Homeostasis, Lecture notes of Biological Sciences
An overview of the human excretory system, its functions, and the main organs involved in the process of removing wastes and maintaining homeostasis. the kidneys, urinary bladder, large intestine, lungs, and skin, explaining their roles in excretion and how they work together with the circulatory and endocrine systems.
Typology: Lecture notes
2021/2022
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Excretory System
Excretory System
- Functions
- Removes wastes from blood
- Removes harmful substances from blood
- Regulates body fluids
- Maintains homeostasis
- Main Parts
- Kidneys
- Urinary bladder
- Large intestine
- Lungs
- Skin
Bladder
- Muscular sac in the pelvis
- Urine is made in the kidneys and travels down two tubes called ureters to the bladder
- Urine exits the bladder into the urethra, which carries out of the body
Large Intestine:
- The undigested material not absorbed by the large intestine forms a semi- solid waste product known as feces. These solid wastes are removed by the body through the rectum.
The Lungs:
- The lungs are another part of the excretory system.
- Lungs are part of the respiratory system , also.
- Wastes removed by the lungs include carbon dioxide and water vapor produced by cellular respiration.
The Skin
- The skin also functions in excretion.
- Sweat glands in the skin produce perspiration.
- When a person perspires, the skin excretes water and salts.