Digestive system horse, cow, pig

Question 1

digestive tract tract epithelium

Answer 1

-stratified squamous
-simple columnar

Question 2

where is stratified squamous epithelium found

Answer 2

-lips through non-glandular stomach and anal canal

-non-keratinized and keratinized regions (species specific)

-non keratinized eg- lips (pigs), proximal anal canal

-keratinized eg-lips (ruminants and horses), hard palate, tongue, esophagus, non-glandular stomach, distal anal canal

-both eg- cheeks, oropharynx, laryngopharynx

Question 3

where is simple columnar found

Answer 3

-glandular stomach
-small intestine
-large intestine except anal canal

Question 4

mouth features

Answer 4

-oral cavity and walls
-accessory structures that: project into oral cavity, drain into the oral cavity
-no tunica muscularis

Question 5

muscles of mastication

Answer 5

-5 masticatory muscles
-temporalis (closing)
-masseter (laterally move mandible)
-medial and lateral pterygoids (medially move mandible)
-digastricus (open)

Question 6

what are some ways to tell the bite force on an animal

Answer 6

-coronary process
-The higher the top crest on the skull the bigger the temporalis muscle

Question 7

what kinds of teeth do dogs have

Answer 7

barchydont=low crown relative to roots

Question 8

what kinds of teeth do rumiants and horses have

Answer 8

hypsodont=high crown
-continuously erupting
-cement and dentin wear down

Question 9

what kind of teeth do beavers and rabbits have

Answer 9

aradicular hypsodont=never forms root
-ever-growing
-can be incisors, canines, cheek teeth
-in beavers and rodents the front side is enamel but back is cement because cement wears down faster to make a sharp tooth

Question 10

permanent pig teeth

Answer 10

3143
3143

Question 11

permanent horse teeth

Answer 11

313(4)3
3133
mares have canines but they usually dont come in

Question 12

permanent ruminant teeth

Answer 12

0033
3133

Question 13

the tongue

Answer 13

-muscular organ filling the oral cavity

Question 14

tongue lingual papillae

Answer 14

-lingual papillae- projections on dorsal and lateral surfaces of the tongue

Question 15

types of lingual papillae on the dogs tongue

Answer 15

-six types classified according to shape
-cat, dog, pig and horses have 5 of the 6 types (lack lentiform)
-ruminant tongues have 5-6 types (lack foliate)
-gustatory vs. machanical
-fungiform, vallate, and folate bear taste buds
-filiform, conical, and lentiform papillae have mechanical roles