Avian Digestive System Flashcards

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1
Q

What is the site of gastric juice secretion?

A

the proventriculus

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2
Q

The proventriculus is the site of what?

A

Gastric juice secretion of hydrochloric acid, no food grinding happens here

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3
Q

What are the pH levels in the proventriculus?

A

4

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4
Q

Ingesta passes through the proventriculus how fast?

A

Rapidly

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5
Q

What’s another name for the gizzard?

A

The ventriculus

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6
Q

The ventriculus is also called the what?

A

The gizzard

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7
Q

What do the thick, muscular walls of the ventriculus do?

A

They reduce the particle size of ingesta. Feed is grinded into small particles

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8
Q

What is grit and what does it do?

A

Grit is small stones and sand that aid in grinding ingested feed

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9
Q

*The stomach of a bird is equal to what 3 things?

A
  1. The crop
  2. The proventriculus
  3. The ventriculus (gizzard)
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10
Q

The crop is basically what?

A
  1. Pre stomach
  2. An enlargement of the esophagus where feed can be stored
  3. Food passes from here to the proventriculus
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11
Q

A birds saliva contains?

A

Salivary amylase

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12
Q

The small intestine contains most mammalian specie enzymes except?

A

Lactase

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13
Q

Why are a birds pH levels slightly acidic?

A

Because birds don’t drink as much water

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14
Q

How long is a birds small intestine?

A

It’s very short (2-4inches)

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15
Q

What is the site of egg laying and spermatozoa deposition during mating?

A

The cloaca

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16
Q

The cloaca is the site of?

A

Egg laying and spermatozoa deposition during mating

17
Q

The LI empties into the what?

A

Cloaca

18
Q

What are the functions of the esophagus?

A
  • It holds and moistens ingesta
  • Salivary amylase action on ingesta begins here
19
Q

Where does feed go after it is in the ventriculus?

A

It empties into the small intestine

20
Q

Where does ingesta from the small intestine empty to?

A

The large intestine

21
Q

After food has passed through large intestine, where does it go?

A

The cloaca and then out through the vent