Digestive System

Question 1

What does the digestive system do?

Answer 1

absorbs nutrients to feed the body

Question 2

Functions of the digestive system are

Answer 2

The digestive system has to perform four processes:

1. Ingestion – taking in food
2. Digestion – breaking food down into smaller forms
3. Absorption – passing the broken down food into the blood to feed the body
4. Excretion – passing wastes from the body

Question 3

Structure of the digestive system, the digestive system consists of

Answer 3

The mouth —–>The pharynx —–> The oesophagus —–> The stomach—–> The intestines

Question 4

The Digestive Tract is also called

Answer 4

The Alimentary Canal

Question 5

The digestive system is helped in its work by

Answer 5

salivary glands, the liver, the pancreas and the

gall bladder

Question 6

Organs or body parts involved in ingestion

Answer 6

The mouth, pharynx and oesophagus

Question 7

What does the mouth do in ingestion?

Answer 7

Digestion begins in the mouth

Food enters the mouth where it is moistened by saliva and chewed with the teeth and broken down into smaller pieces

Question 8

What does the pharynx do in ingestion?

Answer 8

From the mouth, food passes with the help of the tongue into the pharynx
It then enters the oesophagus
The epiglottis closes off the larynx to ensure food goes towards the stomach and not to the
lungs

Question 9

What does the oesophagus do in ingestion?

Answer 9

Commonly called the gullet
It ends in the stomach
It is lined with smooth muscles which contract and force the food into the stomach
At the end of the oesophagus, a muscle helps prevent food returning from the stomach to the oesophagus

Question 10

Organs or body parts involved in digestion & absorption

Answer 10

The stomach and small intestine

Question 11

Functions of the stomach ( same as what does it do) 7

Answer 11

The major part of digestion takes place in the stomach
The stomach is a sac-like structure which receives food from the upper digestive tract
Involuntary muscles help the stomach mix the food with gastric juices
Gastric juices soften the food and begin to digest it
The food then becomes a creamy liquid called chyme
The stomach wall can absorb foods such as alcohol, sugar and water
The stomach acts as a storage tank holding food for up to 4 hours

Question 12

Functions of the small intestine (7)

Answer 12

The small intestine is narrow but about 6 m long
It continues the chemical digestion of food already started in the stomach
It also absorbs digested food into the blood
The duodenum’s walls produce a digestive juice to finish the breakdown of food
The pancreas, liver and gall bladder send juices to help the duodenum’s work
The jejunum and ilium have digestive juices as well, but their main job is to absorb
digested food through their walls into the blood which transports the food to cells.

Question 13

The small intestine is divided into three parts:

Answer 13

The duodenum, The jejunum, The ilium

Question 14

Organ or body parts involved in excretion

Answer 14

The large intestine

Question 15

Functions of the large intestine

Answer 15

After the absorption of food into the small intestine, the fluid waste remaining is passed
into the first part of the large intestine, the colon
Water and some salts are removed from the fluid waste and enter the blood
The remaining solid waste (faeces) is stored in the last section of the colon, the rectum
It is later passed from the body through the anal canal.

Question 16

Organs which aid digestion

Answer 16

The liver, pancreas and gall bladder

Question 17

Functions and features of the liver

Answer 17

After the absorption of food into the small intestine, the fluid waste remaining is passed
into the first part of the large intestine, the colon
Water and some salts are removed from the fluid waste and enter the blood
The remaining solid waste (faeces) is stored in the last section of the colon, the rectum
It is later passed from the body through the anal canal.

Question 18

lemme be honest, this is a last minute thing so like yea the questions that mean the same thing keep changing but I’m just copy and pasting like u were with questions for chem so yea

Answer 18

great

Question 19

Function and feature of the pancreas

Answer 19

A gland which produces juices for digestion

Question 20

Function of the gall bladder

Answer 20

Stores bile which passes to the duodenum to break down fats

Question 21

How does physical activity affect the digestive system (3)

Answer 21

• Over time, regular exercise helps strengthen the digestive tract and keep the gut
  healthy.
• Exercising increases blood flow towards the muscles and digestive tract, which
  can help move food through the digestive tract more efficiently
• Regular physical activity stimulates the gut, whilst increasing intestinal activity,
  so digestive problems are prevented (heartburn, gas, stomach cramps, bloating and
  constipation)

Question 22

Other ways physical activity affects the digestive system (3)

Answer 22

• Exercise enhances gut flora affecting the balance of bacteria in your gut. This gut
  flora plays an active role in protecting our immune system, the body’s natural
  defence that keeps us healthy. It also inhibits the growth of more harmful bacteria,
• Keeping active relieves stress and helps maintain a healthy weight two things that
  can affect digestion.
• Allows your body to digest food and absorb nutrients more effectively.

Question 23

The upper digestive tract consists of

Answer 23

mouth, pharynx, oesophagus, stomach