Digestion Flashcards

(65 cards)

0
Q

An example of monosaccharide is

A

Galactose, glucose, fructose

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1
Q

What food contains high concentration of starch?

A

Pasta, bread, rice, potatoe

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2
Q

An example of disaccharide is

A

Lactose, maltose or sucrose

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3
Q

What are the secretions into the mouth?

A

Amylase, mucin, water

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4
Q

What is mastication

A

The process if chewing

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5
Q

Why is chewing necessary for efficient enzyme digestion?

A

It adds water and increases the surface area of food

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6
Q

What is bolus?

A

The name for food in the esophagus

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7
Q

What is chyme?

A

The name for food in the stomach

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8
Q

What is bile?

A

A substance secreted into the digestion track and aids in increasing surface area of a lipid

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9
Q

An individual who experiences severe pain when eating fats could be suffering from a blockage of what structure?

A

The gallbladder

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10
Q

What would cause an ulcer?

A

Mucus entering the stomach being blocked by bacteria

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11
Q

What helps add bulk to indigested foods that pass through the large intestine?

A

Roughage

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12
Q

What is the macromolecule that forms the fibre “Roughage”?

A

Cellulose

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13
Q

What is peristalsis?

A

The rhythmic contractions that move through the entire digestive track

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14
Q

Where do the pancreas and gallbladder empty their contents into?

A

The duodenum

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15
Q

What are the structures that increase area in the small intestine and lungs?

A

Villi and alveoli

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16
Q

What is the active enzyme that can chemically digest proteins?

A

Pepsin

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17
Q

What is an inactive enzyme that must be activated by HCL respiration?

A

Pepsinogen

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18
Q

What is the difference between pepsin and pepsinogen?

A

Pepsin is active, pepsinogen is inactive and must be activated by HCL respiration

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19
Q

What is the esophageal sphincter

A

the ring like muscular structure that controls entry to the stomach

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20
Q

What is the pyloric sphincter?

A

It controls the exit of the stomachs contents into the small intestine

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21
Q

Where is the due denim located?

A

The first 25cm of the small intestine

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22
Q

Larger more complex assemblies of organic molecules are called?

A

Macromolecules

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23
Q

Macromolecules are often grouped into 4 main categories, what are they?

A

Carbohydrates
Lipids
Proteins
Nucleic acids

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24
Give an example of a subunit of carbohydrates
Sugars (such as glucose and polymers of glucose)
25
Give examples of a subunit of lipids
Glycerol with 3 fatty acids | Glycerol with 2 fatty acids
26
Give an examples of a subunit of protein
Polymers of amino acid
27
Give an example of a subunit of Nucleic acid
Polymers of nucleotides
28
What are the main functions of lipids?
Energy storage and cell membranes
29
What are the main functions of Nucleic acids?
Transfer and expression of genetic information
30
What are the main functions of proteins?
Transport, blood clotting, support, immunity, catalysis, and muscle action
31
What are the main functions of carbohydrates?
Energy storage
32
Chemical digestion starts in the mouth with an enzyme called ________ begins to break down starch into simpler sugars
Amylase
33
What is the esophagus?
A muscular portion of the digestive track that directs food from the mouth to the stomach
34
What is peristalsis?
The wavelike series of muscular contractions and relocations that helps move bolus through the esophagus
35
What controls the entry to the stomach?
A ring like muscular structure called the esophageal sphincter
36
What is the production site and function of saliva?
Mouth Contributes to starch digestion via salivary amylase, and lubricates the inside of the mouth to assist in swallowing
37
What is the production site and function of mucus?
- The mouth, stomach, small intestine & large intestine | - protects the cells lining of the digestive track, lubricates food as it travels through the digestive track
38
What is the production site and function of enzymes?
- The mouth, stomach, small intestine & large intestine | - promotes digestion if food masses into particles small enough for absorption into the blood stream
39
What is the production site and function of acid?
- stomach | - promotes digestion of protein
40
What is the production site and function of bile?
Liver (stored in gallbladder) -suspends fat in water using bile salts, cholesterol, and lecithin to aid digestion of fats in small intestine
41
What is the production site and function of bicarbonate
Pancreas and small intestine -neutralizes stomach acid when it reaches the small intestine
42
What is the production site and function of hormones?
Stomach, small intestine, and pancreas -stimulate production and/or release of acid, enzymes, bile and bicarbonate; help to regulate peristalsis
43
What are the 3 main functions of the stomach?
Storage, digestion and pushing foods into the small intestine
44
What controls the exit of the stomach into the small intestine?
The pyloric sphincter
45
Gastric juice is made up of what 5 thing?
Water, mucus, salts, hydrochloride acids, enzymes
46
What is the purpose of gastric juices
They are responsible for chemical digestion in the stomach
47
Assembling macromolecules uses?
Dehydration sythesis
48
Disassembling macromolecules uses?
Hydrolysis
49
Carbohydrates are?
Macromolecules that always contain carbon, hydrogen, and oxygen
50
A simple sugar is?
A carbohydrate molecule with three to seven carbon atoms | aka monosaccharide
51
A polysaccharide is?
A complex carbohydrate that consists of many linked simple sugars
52
What shape is the stomach?
J shaped
53
What are the 3 methods of protection against the stomach digesting the proteins that make up its own cells?
1 the stomach secretes little gastric juice until the food until the food is present 2 some stomach cells secrete mucus which prevents gastric juice from harming the stomach 3 it produces it's own protein-digesting enzyme called pepsin, in a form that remains inactive until hydrochloride acid is present
54
Which intestine is longer?
The small intestine
55
Which intestine is thicker?
The large intestine
56
What is segmentation?
The process where chyme sloshes back and forth between segments of the small intestine that form when bands of circular muscle briefly contracts
57
What is the main function of the small intestine?
To complete the digestion of macromolecules and to absorb their component subunits
58
The first 25cm of the small intestine is the?
Duodenum
59
What shape is the duodenum?
U shaped
60
The pancreas delivers _____ amount of pancreatic fluid to the duodenum each day.
1 L
61
What is the largest internal organ in the human body?
The liver
62
After bile is produced in the liver it is sent to the?
Gallbladder
63
What is the general name for diseases that cause inflammation in the intestine?
Inflammatory bowel disease
64
What is Crohn's disease?
A serious inflammatory bowl disease that usually affects the ileum of the small intestine