Digestive System 1 Flashcards

1
Q

Four stages of digestion

A

Ingestion
Digestion
Absorption
Egestion

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2
Q

Ingestion

A

Taking in of food into the digestive system

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3
Q

Digestion

A

Breakdown of food physically and chemically

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4
Q

Absorption

A

Occurs when digested food passes from the digestive system and enters the blood

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5
Q

Egestion

A

Removal of unabsorbed waste from digestive system

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6
Q

Types of teeth

A

Incisors
Canines
Premolars
Molars

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7
Q

Mechanical digestion

A

Takes place in the mouth by the chewing and grinding action of teeth on food

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8
Q

Chemical digestion

A

Occurs in the mouth by the action of enzyme amylase.

Amylase is found in salivary, which is a fluid produced by 3 pairs of salivary glands

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9
Q

What is the dental formula

A

2(I 2/2 C 1/1 P 2/2 M3/3)

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10
Q

Functions of digestive system

A
Oesophagus
Stomach
Small intestine
Large 
Cilli
Single villus
Liver
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11
Q

Oesophagus

A

Muscular tube connecting pharynx to the stomach

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12
Q

Peristalsis

A

Mines food down the oesophagus

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13
Q

Stomach

A

Muscular bag

Churns and mixed food with gastric acid forming chyme

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14
Q

What does the stomach do

A

Digests food

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15
Q

How long does the stomach form food

A

4 hours

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16
Q

How long is small intestine

A

5-6m

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17
Q

Functions of small intestine

A

Digestion

Absorption

18
Q

What are the 3 parts of the small intestine

A

Duodenum
Jejunum
Ileum

19
Q

Where does digestion occur

20
Q

What absorbs nutrients

A

Jejunum

Ileum

21
Q

What does the large intestine do

A

Feeds off your waste

22
Q

Function of colon

A

Produce b group vitamins

Digests cellulose

23
Q

What do the caecum, appendix and rectum do

A

Store faeces

24
Q

Villi

A

Increases surface area for absorption of digested food

25
Where are all digested foods absorbed
Into blood vessels
26
What does the liver produce
Bike
27
What does the liver break down
Toxins
28
Where does bile enter the duodenum
Through the bile duct
29
What does bile consist of? 3 things
Water Bile salts Bile pigments
30
Functions of the liver
Emulsisphies fats | Neautralizes the acidic chyme from stomach
31
If it ends in ‘ose’ it is a..
Sugar
32
Name the digestive enzymes
Salivary amylase Pepsin Lipase
33
What does salivary amylase digest
Starch
34
Where is salivary amylase produces
Salivary glands
35
Where does salivary amylase act
The mouth
36
What does pepsin digest
Protein
37
Where is pepsin produced
Gastric glands in stomach
38
Where does pepsin act
Stomach
39
What does lipase digest
Fat
40
Lipase is producer in the
Pancreas
41
Lipase acts on
Duodenum