Tract Musculature Skeletal muscle - voluntary control Mouth, pharynx, cranial esophagus, ext anal sphincter Facilitates chewing, mixing saliva with food, initiation of swallowing, and control of defecation Smooth muscle Majority of esophagus, stomach, s. intestines, l. intestines, and internal anal sphincter Primarily arranged in circular and longitudinal layers Contraction of circular muscle fibers __________ tract Contraction of longitudinal fibers __________ tract
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Digestive Tract Musculature Skeletal muscle - voluntary control
Dogs: 1st Molar in lower arcade and 4th Premolar in upper arcade
Abscesses that form at the root of the apex of the upper carnassial tooth often break through the thin bone of the maxilla and begin to drain through the skin below the eye. Removing the carnassial teeth is
difficult due to their deeply entrenched roots
Carnassial Teeth
Teeth are living structures that have nerve, blood vessel and lymphatic supply, making them susceptible to damage and pain.
_____________ – tooth above gums
_____________– tooth below gums
_____________ - center of tooth Blood and nerve supply enter at apex of
tooth root
______________- surrounds and protects tooth pulp
______________- hard conn. tissue Covers tooth root Fasten tooth in bony socket
______________- covers crown Hardest, toughest tissue in body
______________ – gums; epithelial tissue around teeth
Dental Prophylaxis
Small animals- scaling away of tartar from the teeth. Dental “__________”
Horses- teeth are “___________”, which reduces points on buccal and lingual edges of teeth.
Functions of the Oral Cavity
1. Prehend food
2. Initiate mastication (mechanical digestion) Breaks food into smaller particles Increases surface area for chemical digestion