Salivary Glands

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7 Terms

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What are the 4 salivary glands?

Parotid
Mandibular
Sublingual
Zygotmatic

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Salivary Glands

Aids in
Acts as
Contains which enzyme
- Function
- Present in
- Absent in

Aids in: Formation of bolus

Acts as: Lubricant during swallowing

Contains which enzyme: Amylase

Function: Hydrolysis and digest of starch
Present in: Pigs
Absent in: Ruminants and dog/cats

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Parotid Gland

Color
Location
- Dorsally
- Ventrally
- Medially
In horse makes contact with
Duct opens where

Color: Lighter red

Location: Fills retromandibular fossa

Dorsally: Base of ear
Ventrally: Extend into neck and intermandibular space
Medially:
- Common carotid artery
- External jugular vein
- Hyoid bones and its muscles
- Branches of facial and trigeminal nerves
- Lymph nodes

In horse makes contact with: Guttural pouch

Duct opens on: Buccal vestibule

<p><strong><u>Color:</u> </strong><span style="color: red"><strong>Lighter red</strong></span></p><p><strong><u>Location:</u> </strong>Fills <span style="color: red"><strong>retromandibular fossa </strong></span></p><ul><li><p><strong><u>Dorsally:</u> </strong><span style="color: red"><strong>Base</strong></span><strong> </strong>of <span style="color: red"><strong>ear</strong></span></p></li><li><p><strong><u>Ventrally</u>: </strong><span style="color: red"><strong>Extend</strong></span><strong> </strong>into <span style="color: red"><strong>neck</strong></span><strong> </strong>and <span style="color: red"><strong>intermandibular space </strong></span></p></li><li><p><strong><u>Medially:</u> </strong></p><ul><li><p>Common carotid artery </p></li><li><p>External jugular vein </p></li><li><p>Hyoid bones and its muscles </p></li><li><p>Branches of facial and trigeminal nerves </p></li><li><p>Lymph nodes</p></li></ul></li></ul><p><strong><u>In horse makes contact with</u>: </strong><span style="color: red"><strong>Guttural pouch</strong></span></p><p><strong><u>Duct opens on:</u> </strong><span style="color: red"><strong>Buccal vestibule </strong></span></p>

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Shape of Parotid Gland in Different Species

Carnivores
Pig
Ruminent
Horse

Carnivores: Small and triangular

Pig: Large and triangular

Ruminant: Club shaped

Horse: Large and fills retromandibular fossa

<p><strong><u>Carnivores:</u> </strong><span style="color: red"><strong>Small</strong></span><strong> </strong>and <span style="color: red"><strong>triangular</strong></span></p><p><strong><u>Pig:</u> </strong><span style="color: red"><strong>Large</strong></span><strong> </strong>and <span style="color: red"><strong>triangular</strong></span></p><p><strong><u>Ruminant:</u> </strong><span style="color: red"><strong>Club shaped</strong></span></p><p><strong><u>Horse:</u> </strong><span style="color: red"><strong>Large</strong></span><strong> </strong>and fills<span style="color: red"> <strong>retromandibular fossa </strong></span></p><p></p>

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Mandibular Gland

Location
Partly covered by
Shape and number compared to parotid in
- Dog
- Pig
In ruminants
In horse
Duct open on

Location: Between basihyoid and wing of atlas

Partly covered by: Parotid gland

Shape and number compared to parotid in

Dog: Oval, more than parotid
Pig: Oval, less than parotid

In ruminants: Larger and extend from wing of atlas into intermandibular space

In horse: Less than parotid, long and narrow

Duct open on: Floor of oral cavity

<p><strong><u>Location:</u> </strong>Between <span style="color: blue"><strong>basihyoid</strong></span><strong> </strong>and <span style="color: blue"><strong>wing</strong></span><strong> </strong>of <span style="color: blue"><strong>atlas</strong></span></p><p><strong><u>Partly covered by:</u> </strong><span style="color: blue"><strong>Parotid gland</strong></span></p><p><strong><u>Shape and number compared to parotid in</u></strong></p><ul><li><p><strong><u>Dog:</u> </strong><span style="color: blue"><strong>Oval</strong>, <strong>more </strong></span>than<strong> </strong><span style="color: blue"><strong>parotid</strong></span></p></li><li><p><strong><u>Pig:</u> </strong><span style="color: blue"><strong>Oval, less</strong></span><strong> </strong>than <span style="color: blue"><strong>parotid</strong></span></p></li></ul><p><strong><u>In ruminants:</u> </strong><span style="color: blue"><strong>Larger</strong></span><strong> </strong>and <span style="color: blue"><strong>extend</strong></span><strong> </strong>from <span style="color: blue"><strong>wing</strong></span><strong> </strong>of <span style="color: blue"><strong>atlas</strong></span><strong> </strong>into <span style="color: blue"><strong>intermandibular space</strong></span></p><p><strong><u>In horse:</u> </strong><span style="color: blue"><strong>Less</strong></span><strong> </strong>than<span style="color: blue"> <strong>parotid, long</strong></span><strong> </strong>and <span style="color: blue"><strong>narrow</strong></span></p><p><strong><u>Duct open on:</u> </strong><span style="color: blue"><strong>Floor</strong></span><strong> </strong>of<span style="color: blue"> <strong>oral cavity </strong></span></p><p></p>

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Sublingual Glands

Number
Location

Number: 2

Location: Under mucosa of lateral sublingual recess and lateral surface of tongue

<p><strong><u>Number:</u> </strong><span style="color: green"><strong>2</strong></span><strong> </strong></p><p><strong><u>Location:</u></strong><span style="color: green"><strong> Under mucosa </strong></span>of <span style="color: green"><strong>lateral sublingual recess</strong></span><strong> </strong>and <span style="color: green"><strong>lateral surface</strong></span><strong> </strong>of <span style="color: green"><strong>tongue</strong></span><strong> </strong></p>

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Zygomatic Gland

In dog called
Location
Duct open into

In dog called: Dorsal buccal gland

Location: Medial to zygomatic arch

Duct open into: Buccal vestibule

<p><strong><u>In dog called:</u> </strong><span style="color: purple"><strong>Dorsal buccal gland</strong></span></p><p><strong><u>Location:</u> </strong><span style="color: purple"><strong>Medial</strong></span><strong> </strong>to <span style="color: purple"><strong>zygomatic arch</strong></span></p><p><strong><u>Duct open into:</u></strong><span style="color: purple"><strong> Buccal vestibule</strong></span><strong> </strong></p>