Question

Mouth
-Salivary
gland
Oesophagus
Liver
Stomach
Gall-
Bladder
Pancreas
Large Imam-Smail
Intestine
Intestine
Appendix
Rectum
Anus-
Fig.3 Human digestive system​

Answer 1

Answer:

mouth :

there are four types of teeth in our mouth which help in chewing the food

• incisor - cutting
• canine- tearing
• premolar- crushing
• molar - grinding

dental formula:2/2,1/1,2/2,3/2

salivary gland

salivary gland secrete saliva and present in mouth

they are of three types

1. submaxillary
2. sublingual
3. sab petroid

enzymes of saliva

• salivary amylase -digest carbohydrates
• salivary ptyalin- killing microorganisms

ptylinacts as a start on food and and breaks food into smaller size this small particles mix with saliva to form bolus

oesophagus:

• called as food pipe
• the movement of food in pipe is called peristalsis
• food particles are called bolus

stomach:

• digestion starts from stomach
• hydrochloric acid is present in stomach it helps in transformation of inactive to active substance. pepsinogen into pepsin

hcl

helps in soft wearing the food materials, kills bacteria, acts as protective liquid, Transformers base food into acidic form and changes inactive to active

• liquid juice present in stomach is called gastric juice
• partially digested food material in stomach is called chyme
• secret to litres of hydrochloric acid

duodenum:

• after food mix with stomach acid they move into the duodenum where the mix with bile from gallbladder and digestive juices from pancreas
• it observes vitamins, minerals and other nutrients

liver

• produces bile juice and salts such as Bilirubin and Biluvardin
• contains contains no enzymes
• can do digestion of fat and process known as emulsification
• glycogen stored in the form of ATP
• synthesis plasma proteins
• largest heavy gland

pancreas

• it is exo
• its secrets pancreatic juice which contains enzymes like amylase tripsin and lipase. amylase digest carbs trypsin digest protein lipase digest fats
• produce hormones
• it is connected to the small intestine through its main that called pancreatic duct

small intestine

• longest part of the alimentary canal
• is the site of complete digestion of food into different components
• secretions from liver and pancreas enter the intestine to help the digestion process
• villi is present in the inner lining and helps in increasing of the surface area for absorption

large intestine

• Alto shorter but is called large intestine because it is wider in diameter
• appendix is a part of large intestine

rectum

• stores faecal matter temporarily

anus

• end point of alimentary canal
• helps in exit of waste materials
• process is regulated by an sphincter.

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