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Animal Science 103: Equine > Digestive System > Flashcards

Digestive System Flashcards

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1
Q

Chewing is _____ particle size and _____ the surface area of the grass.

A

Decreasing , Increasing

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2
Q

What starts the digestion?

A

The Molars

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3
Q

Mechanical Digestion:

A
  • Decreases particle size
  • Increases surface area
  • Causes saliva to be secreted
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4
Q

Saliva is important because …

A

it acts as a buffer to protect against acid and helps create the bolus.

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5
Q

What is a Bolus?

A

An oval shaped thing of packed food particles and saliva to aid horses in swallowing their food

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6
Q

The Foregut includes:

A
  • Esophagus
  • Cardiac Sphincter
  • Saccus Ceacus (first part of stomach)
  • Esophageal Region (second part of stomach)
  • Fundic Region (third part of stomach)
  • Pyloric Region (fourth part of the stomach)
  • Pyloric Sphincter
  • Margo Plicatus
  • Small Intestines (Duodenum, Jejunum, Ilium)
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7
Q

How long is the Esophagus of a horse and on what side is it located?

A
  • 4 ft long

- located on the left side

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8
Q

What is the Cardiac Sphincter?

A

It is the flap separating the esophagus and the stomach .

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9
Q

What lives in the Saccus Ceacus?

A

Bacteria and Microorganisms

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10
Q

The stomach is composed of :

A
  • Saccus Ceacus
  • Esophageal Region
  • Fundic Region
  • Pyloric Region
  • Pyloric Sphincter
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11
Q

Parts of the Fundic Region and Pyloric Region secrete ____ due to _____ digestion.

A

HCl , Acid

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12
Q

The stomach continuously secretes …

A

HCl

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13
Q

What is the function of the Margo Plicatus?

A

To separate the two linings of the stomach

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14
Q

The Squamous Mucosa is composed of …

A

the Saccus Caecus, Esophageal Region, and the top half of the Fundic Region

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15
Q

The Glandular Mucosa is composed of …

A

the bottom half of the Fundic Region, Pyloric Region, and the Pyloric Sphincter

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16
Q

True or False: The Squamous Mucosa is effected by acid.

A

False

17
Q

True or False: The Glandular Mucosa is effected by acid

A

True

18
Q

Peristalsis is another word for …

A

Swallowing

19
Q

The Stomach is the site for ______ digestion.

A

Chemical

20
Q

Ulcers are found where in the stomach of a horse?

A

The Magro Plicatus

21
Q

___% of the horses digestive tract is the stomach.

A

10

22
Q

True or False: No nutrients are absorbed in the stomach.

A

True

23
Q

True or False: Food leaves the stomach after 30 min of intake.

A

True

24
Q

True or False: The stomach stays full all day long.

A

False . The stomach empties after 2 hours of initial intake.

25
Q

The foregut is __% of the digestive tract.

A

35

26
Q

The small intestines are __ feet long.

A

70

27
Q

The three section of the small intestine are …

A
  • Duodenum
  • Jejunum
  • Ilium
28
Q

The first time enzymatic digestion, bile, and absorption takes place is in the …

A

Duodenum

29
Q

The small intestine digests:

A
  • starch
  • sugars
  • protein
  • fat
  • minerals
  • vitamins
30
Q

_____ is not digested in the small intestines but in the cecum.

A

Fiber

31
Q

The Hindgut includes:

A
  • Illeocecal Valve
  • Cecum
  • Large intestines (Colon)
  • Rectum
  • Anus
32
Q

How long is the Cecum and where is it located?

A
  • 4 ft long

- right flank

33
Q

How often does the cecum flush?

A

every 3-5 min.

34
Q

The Cecum is the primary site for ______/______ digestion.

A

Microbial / Fermentative

35
Q

The Large and Small Colon of the horse runs where?

A

under the horses stomach

36
Q

The Large Colon is the Primary site for …

A

Water absorption

37
Q

The Rectum forms what?

A

The horses poop shape

Animal Science 103: Equine (5 decks)

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