[tex] \green{\huge{\red{\boxed{\green{\mathfrak{QUESTION}}}}}} [/tex]
Describe the digestive system in human body
[tex] \huge\green{\boxed{\huge\mathbb{\red A \pink{N}\purple{S} \blue{W} \orange{ER}}}}[/tex]
ᴅɪɢᴇꜱᴛɪᴏɴ ɪɴ ʜᴜᴍᴀɴꜱ ᴏᴄᴄᴜʀ ᴛʜʀᴏᴜɢʜ ᴅɪꜰꜰᴇʀᴇɴᴛ ꜱᴛᴀɢᴇꜱ-
[tex]{\bf{Ingestion:}}[/tex]: It is the process of taking in food.It involves taking in food through the mouth and eating it.
[tex]{\bf{Digestion:}}[/tex]: It is the breakdown of food into simpler, soluble form with the help of digestive juices made in the body.
[tex]{\bf{Absorption:}}[/tex]: In absorption, food in the soluble form passes into the body fluids such as blood.
[tex]{\bf{Assimilation:}}[/tex]: Assimilation is the process by which absorbed nutrients are utilized by the body.
[tex]{\bf{Egestion:}}[/tex]: It is the process of elimination of undigested solid parts of the food.
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~~~~~~~~~~ᴅɪɢᴇꜱᴛɪᴏɴ ɪɴ ᴛʜᴇ ᴍᴏᴜᴛʜ!
Food is taken in or [tex]\tt\bf\blue{ingested}[/tex] through the mouth.Digestion begins inside your mouth when you chew the food.
The water in your mouth is digestive juice called [tex]\tt\bf\blue{Saliva}[/tex]
.
It is secreted by the three pairs of the [tex]\tt\bf\green{Salivary \: Glands}[/tex] in your mouth.
Chewing breaks down the food into small pieces and mixes it with saliva.This process is called [tex]\tt\bf\green{Mastification}[/tex]
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~~~~~~~~ᴅɪɢᴇꜱᴛɪᴏɴ ɪɴ ᴛʜᴇ ꜱᴛᴏᴍᴀᴄʜ!
After the food is swallowed, it slides down the pharynx into the [tex]\tt\bf\purple{Oesophagus}[/tex]
(foodpipe).
The oesophagus leads from your mouth to the stomach.It is made up of muscles.
These muscles gently push food down to your stomach in a wave like action called [tex]\tt\bf\red{Peristalsis}[/tex]
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ᴀʙꜱᴏʀᴩᴛɪᴏɴ ɪɴ ᴛʜᴇ ꜱᴍᴀʟʟ ɪɴᴛᴇꜱᴛɪɴᴇ!
The digested food is then absorbed by the small intestine. Absorption of the food occurs through thousands of small finger-like projections in the inner wall of the small intestine.
These projections are known as [tex]\tt\bf\pink{Villi}[/tex] increse the surface area of absorption of digested food.
Each villus has a network of fine blood cappilaries close to the surface.
The food absorbed on the surface of the villus passes into the blood in tge cappilaries.
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~~~~~~~~~~~~ ᴀꜱꜱɪᴍɪʟᴀᴛɪᴏɴ!
The food absorbed into the blood is transported to different parts of the body.It is used to provide energy and materials for growth and repair of the body tissues.This is the final stage of digestion and is known as [tex]\tt\bf\red{Assimilation}[/tex]
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~~~~~~~~~~~~ ᴇɢᴇꜱᴛɪᴏɴ!
Not all the food you eat is digeated & absorbed.The food that cannot be digested moves from the small intestine into a wide tube called the [tex]\tt\bf\green{Large \: Intestine}[/tex]
The waste food is now almost solid is stored in the last part of the large intestine called the [tex]\tt\bf\green {Spectrum}[/tex]
It then passes away from the body through [tex]\tt\bf\green{Anus}[/tex]
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