The Excretory System
The Excretory System
The importance of the excretory system
The excretory system involves a process which removes unwanted products from the body's chemistry. In general, excretion is the process of separating wastes from the body fluids and eliminating them. Examples include the removal of carbon dioxide in the air we exhale, and unwanted nitrogen in sweat, nails and hair.
Explain the various methods of excretion in the human body
There are four (4) organ systems which are responsible for excretion:
The respiratory system helps to excrete carbon dioxide, water, and other gases when we breathe.
The integumentary system also excretes some water in addition to inorganic salts, lactic acid, and urea in the sweat.
The digestive system not only eliminates food residue (which is not a process of excretion) but also excretes water, salts, carbon dioxide, lipids, bile pigments, and cholesterol.
The urinary system, we will place most of our emphasis on this organ system. It excretes a wide variety of metabolic wastes, toxins, drugs, salts, water, hormones, and hydrogen.
State the position, structure and function of the large intestine as part of the excretory system
[pic]
The large intestine (or large bowel) is the part of the digestive system where waste products from the food you eat are collected and processed into faeces.
The large intestine is about 1.5 m long and consists of the caecum, appendix, colon and rectum, which are distributed in the abdominal cavity.
The large intestine performs the following functions: • reabsorbs water and maintains the fluid balance of the body • absorbs certain vitamins • processes undigested material (fibre) • stores waste before it is eliminated.
State the position, structure and function of the urinary system
[pic]
The urinary system removes a type of waste called urea from your blood. Urea is produced when foods containing protein, such as meat, poultry,
The importance of the excretory system
The excretory system involves a process which removes unwanted products from the body's chemistry. In general, excretion is the process of separating wastes from the body fluids and eliminating them. Examples include the removal of carbon dioxide in the air we exhale, and unwanted nitrogen in sweat, nails and hair.
Explain the various methods of excretion in the human body
There are four (4) organ systems which are responsible for excretion:
The respiratory system helps to excrete carbon dioxide, water, and other gases when we breathe.
The integumentary system also excretes some water in addition to inorganic salts, lactic acid, and urea in the sweat.
The digestive system not only eliminates food residue (which is not a process of excretion) but also excretes water, salts, carbon dioxide, lipids, bile pigments, and cholesterol.
The urinary system, we will place most of our emphasis on this organ system. It excretes a wide variety of metabolic wastes, toxins, drugs, salts, water, hormones, and hydrogen.
State the position, structure and function of the large intestine as part of the excretory system
[pic]
The large intestine (or large bowel) is the part of the digestive system where waste products from the food you eat are collected and processed into faeces.
The large intestine is about 1.5 m long and consists of the caecum, appendix, colon and rectum, which are distributed in the abdominal cavity.
The large intestine performs the following functions: • reabsorbs water and maintains the fluid balance of the body • absorbs certain vitamins • processes undigested material (fibre) • stores waste before it is eliminated.
State the position, structure and function of the urinary system
[pic]
The urinary system removes a type of waste called urea from your blood. Urea is produced when foods containing protein, such as meat, poultry,