Digestive system Flashcards

1
Q

Two names for the irregular hollow tube of the digestive system that is approximately 29 feet long

A

G.I. tract
Alimentary canal

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2
Q

The breakdown or digestion of food material can be described as mechanical, muscular, hydrating, radiation, chemical, or biological

A

Chemical
Mechanical

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3
Q

The three kinds of processing that food undergoes in the body

A

Digestion
Absorption
Metabolism

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4
Q

List the seven accessory organs of the digestive system

A

Teeth tongue salivary glands, pancreas, gallbladder, appendix and liver

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5
Q

The hollow space within the G.I. tract

A

Lumen

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6
Q

The four layers of the G.I. tract from inside out

A

Mucosa
Submucosa
Muscle layers
Serosa

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7
Q

The wavelike rhythmic contraction of the muscular coat that moves food material

A

Peristalsis

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8
Q

The process of digestion begins immediately upon food entering the mouth through which substance

A

Salvia

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9
Q

This bony structure of the mouth is formed by parts of the Palatine and maxillary bones

A

Hard palette

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10
Q

This muscular structure located in the rear of the mouth assists in preventing food and liquid from entering the nasal cavity

A

Soft palette

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11
Q

Part of the soft palate this structure hangs down in the back of the mouth to assist in preventing food and liquid from entering the nasal cavity

A

Uvula

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12
Q

The tastebuds are located on these structures of the tongue

A

Papillae

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13
Q

List the tastes the sensory receptors of the tastebuds can detect

A

Sour, sweet, bitter and salty

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14
Q

List the four major types of teeth

A

incisors
Molar
Premolar
Canine

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15
Q

Medical term for chewing

A

Mastication

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16
Q

The name sometimes used for canine teeth

A

Cuspid

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17
Q

The name sometimes used for premolars

A

Bicuspids

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18
Q

The name sometimes used for molars

A

Tricuspids

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19
Q

These teeth are used for tearing

A

Canine teeth

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20
Q

These teeth are used for grinding and crushing

A

Molars and premolars

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21
Q

This is the small rounded mass of food once chewed

A

Bolis

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22
Q

The number of teeth most two year olds have

A

20

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23
Q

The number of teeth most adults have

A

32

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24
Q

List the parts of the tooth

A

Crown root neck

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25
The hardest tissue in the body
Enamel
26
The three hard tissues of teeth
Enamel Dentin and cementum
27
The two substances of saliva
Mucus and savilary amylase
28
The digestive enzyme of saliva
Savilary amylase
29
The digestive enzyme that begins the chemical digestion of carbohydrates
Salvilary amylase
30
This structure is part of the respiratory and digestive system
Pharynx
31
The structure blocks food from entering the respiratory system
Epiglottis
32
This structure connects the pharynx with the stomach
Esophagus
33
A ring shaped muscle
Sphincter
34
The structure is located at the end of the esophagus that keep food down in the stomach
Cardiac sphincter A.k.a. gastroesophageal sphincter
35
This disorder involving the opening in the diaphragm enlarging, allowing the esophagus to bulge or the stomach moving upward into the chest
Hiatal hernia
36
This disorder involving reflux of the stomach contents into the esophagus
Gerd
37
Once the bolus is broken down into a semi solid mixture by the stomach, the substance is called this
Chyme
38
The stomach muscles runs in this direction
Lengthwise around and obliquely
39
The folds of the stomach lining when empty
Rugae
40
The three divisions of the stomach
Fundus Body Pylorus
41
The part of the stomach that joins the small intestine
Pylorus
42
Food is held in the stomach by this muscle
Pyloric sphincter
43
Why is the small intestine named that since it’s 20 feet long?
The diameter
44
List the three parts of the small intestine
Duodenum Jejunum Ileum
45
The multiple circular folds in the small intestine
Pliciae
46
Tiny fingers covering the multiple circular folds in the small intestine
Villi
47
Why is the small intestine covered with millions of these tiny fingers (villi?)
More surface area to absorb nutrients
48
One in 10 Americans will suffer from this disorder of the digestive system
Ulcers
49
Comb like structure on the villi that increase surface area for absorption of nutrients
Microvilli
50
The C shaped structure of the small intestine
Duodenum
51
Which organ rests in the C shaped structure of the small intestine
Pancreas
52
One in 10 Americans will suffer from this disorder that sometimes results from rapid weight
Gall stones
53
What kind of gland is the liver?
Exocrine gland
54
What is the largest gland in the body?
Liver
55
The name to describe bile salts mechanically break up fats
Emulsify
56
The structure concentrates and stores bile produced in the liver
Gallbladder
57
If this blocks the common bile duct feces appear, gray white, and the skin may become jaundice ( yellow)
Gallstones
58
What kind of gland is the pancreas?
Exocrine and endocrine
59
Why is the pancreatic juice the most important digestive juice?
Digest all major food groups
60
What are the pancreatic islets that secrete hormones?
Islets of Langerhans
61
Undigested and unabsorbed food enters the large intestine from the small intestine through the structure
Ileocecal valve
62
This has the consistency of soup and is found in the small intestine
Chyme
63
Water and salts are reabsorbed here
Small intestine
64
What carries out digestion in the large intestine
Good bacteria
65
This is responsible for synthesis of vitamin K and production of some B complex vitamins
Bacteria
66
What is vitamin K important for?
Blood clotting
67
The length of time it takes for material to pass through the large intestine normally
3 to 5 days
68
The condition that results from food passing through the digestive system to quickly
Diarrhea
69
The condition that results from food passing through the digestive system to slowly
Constipation
70
This is considered part of the digestive system, though it serves no important function in humans
Appendix
71
This part of the digestive system contains lymphatic tissue
Appendix
72
This part of the digestive system has a warm like shape
Appendix
73
The large, moist slippery sheet of the serous membrane, that lines, the abdominal cavity, and covers the organs located in it
Peritoneum
74
2 prominent extensions of the peritoneum
Mesentery and greater omentum
75
List four examples of mechanical digestion
Chewing Peristalsis Swallowing Defecation
76
List for catalysts for chemical digestion
Saliva Stomach Pancreas Intestines