human digestive system

Question 1

What are the four major tasks of the digestive system?

Answer 1

ingestion, digestion, absorption, elimination

Question 2

what is ingestion?

Answer 2

The breaking up of the food

Question 3

What is digestion?

Answer 3

when the chemicals are broken down into there building blocks. e.g: amino acids

Question 4

What happens in absorbtion?

Answer 4

they are absorbed and will be delivered by the help of other body systems to cells

Question 5

What happens in elimination?

Answer 5

waist that was not digested will be removed

Question 6

What does your mouth contain to break down the molecules?

Answer 6

saliva

Question 7

What type of digestion are in the mouth?

Answer 7

chemical and mechanical

Question 8

What does saliva help prevent?

Answer 8

tooth decay and it can lubricate foods and can shape the food into a bolus so it can be swallowed

Question 9

Where will the bolus travel down?

Answer 9

The esophagus’s

Question 10

What does the epiglottis do?

Answer 10

blocks trachea during swallowing (place where gasses go )

Question 11

Where does peristalsis happen and what is it?

Answer 11

wave like movements by smooth muscles and happens in esophigous and helps move the food to stomach

Question 12

What happens in the stomach?

Answer 12

it can store up to 2L of liquid and food- chemical digestion occurs here

Question 13

What does the acidic liquid in the stomach contain?

Answer 13

hydrochloric acid, enzymes and pepsin which breaks down protein- mechanical digestion which churns the gastric juices

Question 14

What does the stomach produce result in?

Answer 14

chyme

Question 15

What do each of the sphincters separate?

Answer 15

one from the espohigous, one from the small intestine

Question 16

Where does the chyme go after?

Answer 16

to the intestines

Question 17

what are the parts of the small intestine?

Answer 17

1) duodenum
2) jejunum
3) ileum

Question 18

What can you use to memorise the small intestines?

Answer 18

DJ ivan

Question 19

What happens in the small intestines?

Answer 19

chemical digestion of lipids, proteins and carbs- there are enzymes, digestive juices come from other organs

Question 20

Where is there peristalsis in the small intestine?

Answer 20

when the waves move the chyme through the segmented space

Question 21

Where does absorbtion occur?

Answer 21

Lining of small intestine the villi- shape allows lot’s of surface area to absorb nutrients

Question 22

Where do we enter after the small intestine?

Answer 22

it’s job is to reabsorb water so we do not lose this and the end is the rectum and things that have not broken down are eliminated

Question 23

what are muscle cells?

Answer 23

they can contract, protein fibres that change there length - mitochondria - energy needed for contraction

Question 24

what has to be digested?

Answer 24

carbohydrates, lipids and fats, cannot travel in bloodstream