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ANSC 221 EXAM 2 Questions With Verified Answers

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ANSC 221 EXAM 2 Questions With Verified Answers lips -most important for animals without hands, prehension (horse), sifting food, swallowing; -least important to chicken (no lips, beak) lips of pigs immobile, used for protection teeth mastication, particle size reduction -chewing importa...

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  • June 5, 2024
  • 17
  • 2023/2024
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ANSC 221 EXAM 2 Questions With Verified
Answers
lips
-most important for animals without hands, prehension (horse), sifting food, swallowing;
-least important to chicken (no lips, beak)
lips of pigs immobile, used for protection


teeth
mastication, particle size reduction
-chewing important for ruminant animals-more they chew, more HCO3 produced, affects rumen
fermentation


tongue
swallowing


teeth carnivore
tearing


teeth omnivore
can chew food


teeth pig
cheek teeth w cone shaped or rounded cups for crushing food


herbivore teeth
only front teeth on bottom and pad on top


saliva
beginning of digestion for non-ruminant animals
-Mucous: to moisten food and stick it together, lubricate for swallowing
-Amylase (pytalin in humans): digest carbohydrates
-Bicarbonate in ruminants: produce large amounts of acid in rumen via fermentation, acid is buffered
in part from bicarbonate from saliva


esophagus
-connects mouth with stomach, food is moved from mouth to stomach by muscular contraction called
peristalsis
-reverse-peristalsis= vomiting, direction of contractions is reversed
-segmentation: occurs in small intestine; contraction, churning and mixing of food


stomach
storage
chemical digestion


pyloric sphincter
controls movement of gastric contents between stomach and small intestine

,non-ruminant stomach-regions
4 regions
esophageal
cardiac
fundin
pyloric


proventriculous
follows crop, ahead of gizzard
stomach like a mammal
avian


duodenum
closest to stomach, most active digestion


jejunum
absorption


ileum
absorb B12, anything that wasn't absorbed


large intestine
food that was not absorbed


colon
storage
absorption of water


cecum
bind pouch at junction of small and large intestine
non ruminant herbivores (horses, rabbits)
provides post-abortive fermentation vat
digests cellulose, does not provide protein, results in VFAs


liver
produces bile


bile
emulsifies fat


gall bladder
stores bile


rumen

, big fermentation vat
papilla
no real wall between rumen and reticulum
remodel proteins, manufacture essential amino acids
utilize NPN
manufacture B vitamins


reticulum
hardware stomach
honeycomb
no real wall between rumen and reticulum
regurgitation


omasum
many piles
filter of larger particles


abomasum
true stomach
HCL
enzymes


rectum
final section of the large intestine, connects to sphincter


cloaca
only opening for urinary, intestinal, and reproductive opening for birds and reptiles


cecae
cavity where large intestine begins and ileum opens, twin T junctions between large and small
intestine


amylase
only nonruminants
digest CHO
mouth
HCO3 only in ruminant


bicarbonate
mouth
buffer VFAs


HCL
stomach
activate pepsinogen
digestion
makes stomach acid

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