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Digestive Anatomy

Terms in this set (38)

mouth
lips, tongue, and teeth
prehension
the process of grasping and somehow getting food into the mouth; uses the lips, mouth and teeth
mastication
the process of chewing and grinding food into smaller pieces
what kind of teeth do horses have
Hypsodont teeth
pharynx
a short muscular tube between the mouth and esophagus
Esophagus
a long muscular tube running down the left side of the neck and through diaphragm to the stomach
Peristalsis
the contractions of the esophagus, moves food down to the stomach
Stomach
u shaped sac, located in the front part of the abdomen, breakdown of food matter is aided by gastric juice
digestion in the stomach
food is mixed with pepsin and HCL
when does the stomach function best
when it is 3/4 full
what can form with frequently empty stomach
gastric ulcers
Small intestine
a tube of smooth muscle, has a u shaped curved after stomach then coils in left flank area
how much can the small intestine hold
12 gallons
how much of the digestive system's capacity does the small intestine account for
28%
what are the three parts of the small intestine
duodenum, jejunum, ileum
where is the major site of digestion and absorption of many nutrients
small intestine
how long does food take in the small intestine
30 to 90 mins
where is a horses gall bladder
they don't have one
how big is the small intestine
2 inches in diameter and 70 feet long
Cecum
elongated sac starting in the high right flank area, fermentation occurs here
what is the capacity of the cecum
8 gallons
how long is food in the cecum
7 hours
how long is the cecum
4 feet
what are always the contents in the cecum
they are always liquid
fermentation
fiber digestion completely dependent on microbes, vitamins and fatty acids absorbed here
large colon
connects cecum to small colon
how big is the large colon
10-12 inches in diameter and 12 feet long
what is the capacity of the large colon
20 gallons
what does the large colon usually have in it
food matter
how big is the small colon
4 inches in diameter and 10 feet long
what happens in the small colon
water is absorbed and fecal balls form
what is in the small colon
contents are usually solid
digestion in large colon
microbial digestion continues
where is the common location for colic
large colon
digestion in the small colon
absorption of moisture
defecation
process of excreting waste
what stores feces
rectum
how long is the rectum
12 inches long
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