Digestive System Flashcards

1
Q

What is the function of the digestive system?

A

Break down food in to small enough particles to ve absorbed into the blood stream, and remove the rest as waste

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2
Q

The sum of all the chemical reactions in the body

A

Metabolism

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3
Q

Breakdown of food sources and old cells and tissues

A

Catabolism

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4
Q

Building up of body cells and tissue

A

Anabolism

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5
Q

What is the function of the ALIMENTARY CANAL?

A

Break down food and absorb nutrients

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6
Q

What is the function of the ACCESSORY ORGANS?

A

To assist the process of digestion

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7
Q

What is another name for the alimentary canal?

A

GI Tract

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8
Q

Protects the opening of the mouth

A

Lips

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9
Q

Forms the lateral walls of the mouth

A

Bucca (cheeks)

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10
Q

Forms the anterior roof of the mouth

A

Hard palate

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11
Q

Forms the posterior roof of the mouth

A

Soft palate

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12
Q

Finger-like projection of the soft palate

A

Uvula

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13
Q

The space between the teeth and the lips

A

Vestibule

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14
Q

The space contained by the teeth

A

Oral cavity

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15
Q

The muscle occupying the floor of the mouth

A

Tongue

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16
Q

Mucous membrane fold that holds the tongue in place

A

Lingual frenulum

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17
Q

The tonsils that you see ( the back of the palate )

A

Palatine tonsils

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18
Q

Tonsils at the base of the tongue

A

Lingual tonsils

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19
Q

Peg-like projections that hold the taste buds

A

Lingual papillae

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20
Q

The word for chewing

A

Mastication

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21
Q

What is the pharynx a common passageway for? (3)

A

Food
Liquid
Air

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22
Q

The pharynx that is part of the respiratory pathway

A

Nasopharynx

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23
Q

The pharynx that is at the back of the mouth

A

Oropharynx

24
Q

The pharynx that is continuous with the esophagus

A

Laryngopharynx

25
Q

What are rhythmic contractions that help along food? It requires muscles to run longitudinal and circular.

A

Peristalsis

26
Q

What runs from the pharynx, through the diaphragm, to the stomach?

A

Esophagus

27
Q

On average, how long is the esophagus?

A

10 inches

28
Q

What are the layers of the esophagus? (4)

A
  • Mucosa
  • Submucosa
  • Muscularis Externa
  • Serosa
29
Q

The innermost layer of the esophagus, moist membrane that lines the cavity

A

Mucosa

30
Q

Beneath the mucosa in the esophagus. A layer of connective tissue that contains blood vessels, nerve endings and lymphatic vessels

A

Submucosa

31
Q

Muscle layers in the esophagus, both longitudinal and circular

A

Muscularis Externa

32
Q

The outermost layer of the esophagus.

A

Serosa

33
Q

Serous fluid-producing cells in the serosa (outermost layer) of the esophagus.

A

Visceral Peritoneum

34
Q

A network of fibers that regulate the mobility of the GI tract organs

A

Nerve Pletus

35
Q

What organ is this?
- C shaped
- Left side of the abdominal cavity
- 6-10 inches in length
- Diameter depends on the amount of food in the stomach at a given time
- divided into 4 major regions

A

Stomach

36
Q

What are the four regions of the stomach?

A

Cardial
Fundus
Body
Pylorus

37
Q

Contains the cardio-esophageal sphincter which is the muscle through which food enters the stomach

A

Cardial

38
Q

Area to the lateral of the sphincter

A

Fundus

39
Q

Midportion of the stomach

A

Body

40
Q

The terminal portion of the stomach. Contains the pyloric sphincter/valve

A

Pylorus

41
Q

The folds of the mucosa (stomach) when empty

A

rugae

42
Q

The convex lateral surface of the stomach

A

Greater curvature

43
Q

The concave, medial surface of the stomach

A

Lesser curvature

44
Q

Double layer of the peritoneum (liver to lesser curvature)

A

Lesser omentum

45
Q

Extension of peritoneum that drapes down and covers the abdominal organs. Riddled with fat to help insulate, cushion and protect internal organs.

A

Greater omentum

46
Q

What is the greater omentum also riddled with?

A

Peyer’s patches/lymphnodes

47
Q

What does the stomach serve as?

A

A storage site and a place for foot

48
Q

What does the stomach do?

A

Churn, mix and pummel food particles

49
Q

Gastric _______, gastric __________, gastric ________.

A

pits, glands, juice

50
Q

Where does most of the digestive activity occur?

A

In the pylorus region

51
Q

What is mostly broken down for ATP?

A

Carbohydrates

52
Q

What are mainly broken down for use in myelin sheaths, cell membranes and for insulation, however, they can be used for ATP when the body is low on carbohydrates

A

Lipids

53
Q

What is conserved/hoarded by the body?

A

Proteins

54
Q

What is food called when it enters the stomach?

A

Bolus

55
Q

What is food called when it leaves the stomach?

A

Chyme

56
Q
A