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Biology > Digestive System 1 > Flashcards

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

A

Duodenum

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
Q

Where are all digested foods absorbed

A

Into blood vessels

26
Q

What does the liver produce

A

Bike

27
Q

What does the liver break down

A

Toxins

28
Q

Where does bile enter the duodenum

A

Through the bile duct

29
Q

What does bile consist of? 3 things

A

Water
Bile salts
Bile pigments

30
Q

Functions of the liver

A

Emulsisphies fats

Neautralizes the acidic chyme from stomach

31
Q

If it ends in ‘ose’ it is a..

A

Sugar

32
Q

Name the digestive enzymes

A

Salivary amylase
Pepsin
Lipase

33
Q

What does salivary amylase digest

A

Starch

34
Q

Where is salivary amylase produces

A

Salivary glands

35
Q

Where does salivary amylase act

A

The mouth

36
Q

What does pepsin digest

A

Protein

37
Q

Where is pepsin produced

A

Gastric glands in stomach

38
Q

Where does pepsin act

A

Stomach

39
Q

What does lipase digest

A

Fat

40
Q

Lipase is producer in the

A

Pancreas

41
Q

Lipase acts on

A

Duodenum

Biology (29 decks)

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