Question

Question #54a39

Answer 1

Digestive system is one which breakdown the complex substances in the food(we eat) into simpler substances so that they can be absorbed by our body in order to get energy. This energy is required by our body in order to perform its daily activities.

Explanation:

https://qknowbooks.gitbooks.io/class_6_science-digestive-system-of-humans/content/diagram_of_the_digestive_system.html

Main Digestive Organ:

• Mouth or Oral cavity or Buccal cavity
  Breaks the food into smaller chunks and convert into an oval shaped mass called bolus.

• Pharynx(Throat)
  It helps in swallowing. It also serves as a pathway in the movement of food from mouth to esophagus.

• Esophagus `to` food pipe
  It perform the function of a carrier. It carries the food from the mouth and transfer it to the stomach.

• Stomach
  It is a salient digestive organ. It digests the food partly converting it into chyme. Chyme is a thick semi-fluid mass of a partially digested food.

• Small intestine
  It is another vital organ where `90%` of digestion of food takes place. It's main funtion is the diestion and absorption of all the necessary nutrients present in the food.

• Large intestne
  It's main function is to absorb water from the remaining indigestable food.

• Rectum
  It act as a temporary store house for stools before they are eliminated from the body.

Accessory Digestive Organs:

• Liver
  Its main function is to process the nutrients absorbed from small intestine. Apart from that, Liver secretes Bile which plays a key role in digesting fats.

• Pancreas
  It helps in digestion by secreting the pancreatic juice. Pancreatic juice contains enzymes necessary for proteins and starches.

• Gall bladder
  It mainly perform storage role. As it stores the bile untill it's needed for digestion.

Hope it helps...