Digestive system

Question 1

What are the key components of the Gastrointestinal tract

Answer 1

Mouth- chewing action takes place mouth produces salvia to help with the break down of food
hydrolisis enzyme assisted break down of food
make a bolus - a sphere of digested food that then can be swallowed
2- The osephagus - propel pass it on to then next enzyme
3- stomach- churing like chewing
hydroloisis
store food in stomach
The goal is to make chyme melting bolus breaking it don into a more f;luid type of substance
4- small intestine- hydrolios and absorbs new nurients
the first orhgan ti collecy the break down of food producyts anfd usijg tem to make others in your body
5- colon large intestine- storage absortion
6- rectum- holds onto processed foods until you are able to expell the food
70 anus is where food id released excluded

Question 2

What is metabolism

Answer 2

the process by which the body changes food and drink into energy
It’s a complex process that combines calories and oxygen to create and release energy. This energy fuels body functions.
our metabolism never stops, even when your body is at rest. It constantly provides energy for basic body functions, such as:

Breathing.
Circulating blood.
Digesting food.
Growing and repairing cells.
Managing hormone levels.
Regulating body temperature.

Question 3

Name some digestive system organs and their structure and purpose?

Answer 3

Mouth- begginig of digestion
food enters the oral cavity in a process called ingestion the food mixes with salivia
lips and cheeks are formed of muscle and connective tissue
allows lips and cheeks to move food mixed with salivia around the mouth and begin chemical digestion
mastication is the process of chewing and mixing food with salivia
The oral cavity can be exposed to very hot and very cold as well as rough food particles.
The mouth is lined with mucas secreting stratified squamous epithelial cells. This layer provides some protection agaisnt abrasion the effects of heat and continuos wear and tear
Cheeks and lips are nose involved in facial expression

Toungue
Large voluntary muscular structure
That has lots of taste buds
It is attached posterioly to the hyoid bone asnd infeerioly by the lingual frenulum
The superior surfave of the toungue is covered in stratified squamous epithelium for protection against wear and tear
surface of the toungue contains tiny little projections called papillae -these contain nerve endings whih are responsible for thde sense of taste they contribute to or enjoyment of food
other funtions include swalling (deglutition) holding and moving foiod around the oral cavity and speech

palate
forms the roof of the moyuth it consist of two parts the hard palate and the soft palate
hard palare - located anteriorly ans is bony
The solf palate lies posterioly and consists of skeletal muscle and connectuive tissue
It playes a poart in sewallowing
The palatine tonsils lie laterally and are lymphoiod tissue.
The uvula is a fold of tissue that hangs down frpm the centre of the soft plate

Teeth
Tem[orary teeth appear at 6 months old you het your full set of teeth (permanet) by 6 years old
There are 32 permanet teeth 16 maxilla arch (upper)
16 mandible (lower)