Lecture 27/28: Rabbits vs. Rodents

Question 1

T/F rabbit hair is very delicate

Answer 1

true: easily to tear or rip when clipping fur

Question 2

What is a key way to differentiate a female rabbit from a male rabbit

Answer 2

female rabbit possesses dewlap

Question 3

T/F rabbits lack footpads

Answer 3

true

Question 4

There is a risks of _______________ at the points of the hock and tips of ____________

Answer 4

pododermatitis, third phalanges

Question 5

What are the glandrous areas of a rabbit

Answer 5

nose tip, scrotal sacs, inguinal folds

Question 6

List the areas of the Rabbits scent gland

Answer 6

*chin gland
*perineal glands
*inguinal glands

Question 7

What is being pointed to

Answer 7

Inguinal scent glands Perineal scent glands

Question 8

Cornea of eye is ____% of the eyeglobe

Answer 8

30%

Question 9

what is the eye position of a rabbit? what does this allow for?

Answer 9

lateral position of eye globe in skull
wide field of view by O.U (both eyes)

Question 10

what kind of vision do rabbits have

Answer 10

Biocular vision

Question 11

O.U. =
O.D. =
O.S. =

Answer 11

O.U. = ocular universal (both)
O.D. = ocular dexter (right)
O.S. = ocular sinister (left)

Question 12

Answer 12

Lagomorpha Peg teeth

Question 13

What kind of teeth do rabbits have

Answer 13

Hypsodont

Question 14

How many incisors do rabbits have? rodents?

Answer 14

rabbits: 6 incisors (2 upper L and R)
rodents: 4 incisors (1 upper L and R)

Question 15

How are rabbits and horses similar

Answer 15

• very large masseter and temporal muscles due to grinding teeth
• don’t tend to open mouth too wide

Question 16

What kind of digestive tract do rabbits have/ how is the GI tract similar to horses

Answer 16

hindgut fermentation

Question 17

Why is it common for rabbits to experience GI problems

Answer 17

due to them being hindgut fermenters (colic)

Question 18

What organ is this? How is it orientated

Answer 18

cecum: superficially located in caudal
peritoneal cavity

Question 19

Answer 19

Question 20

WHERE IS THE DESCENDING DUODENUM LOCATED??????

Answer 20

ON THE RIGHT SIDE OF THE ABDOMEN

he repeated this a million times!!*

Question 21

Identify A-D

Answer 21

Question 22

what type of feces do rabbits have

Answer 22

Pellets and Caecotrophs

Question 23

what is caecotroph

Answer 23

“night feces”
Fermented in cecum

Question 24

what unique feature do rabbits exhibit with their feces

Answer 24

2 types of feces (night and pellet)

Coprophagy(eat) of cecotrophs

Question 25

Is it normal that rabbits eat their feces

Answer 25

YES, they are the ONLY species that it is normal in!

Question 26

What is unique about the rabbit uterus

Answer 26

duplex uterus (2 cervix) evolved to be able to make more babies because they are eaten SO often by predators

Question 27

Answer 27

**difficult to spay them**

Question 28

Answer 28

Question 29

Rabbit Reproductive tract differences from small carnivorous mammals List the 4 reproductive differences

Answer 29

*2 cervices *abundant adipose in broad ligament *numerous large vessels in broad ligament *lacking thick suspensory ligament

Question 30

Answer 30

Ovary; female rabbit, “doe”

Question 31

Answer 31

**ovary is a cylinder shape ** have to know its a duplex uterus (Dr. Nader said a million times)

Question 32

what is a male rabbit called

Answer 32

a Buck

Question 33

Answer 33

Question 34

What happens if the inguinal fat pad is damaged/torn during SX

Answer 34

makes it an open hematoma makes them more prone to herniation (Dr.Nader said a million times)

Question 35

Answer 35

Question 36

what are the shape of the rabbit's testicles

Answer 36

elongated; lateral to penis

Question 37

what is the route of sperm

Answer 37

Testicle-- Head, body, Tail of epididymus-- ductus deferns

Question 38

what animal is this? where do they normally live?

Answer 38

Long-tailed Chinchilla Natural Habitat: Andes Mountain & high elevation terrain

Question 39

what is significant about the chinchillas (rodent) skull

Answer 39

HUGE tympanic bulla allowing for great hearing Huge pinna to capture sound Hypsodont teeth like rabbit/horse point= lingual/buccal teeth

Question 40

How are the incisors of a rodent oriented

Answer 40

single incisor for each quadrant (101,201,301,401)

Question 41

Why are the teeth yellow on the chinchilla

Answer 41

the more enamel the darker the color

Question 42

T/F Rodents have chisel shaped teeth

Answer 42

true; helps because their teeth are always growing

Question 43

Answer 43

1. tympanic bulla 2. diastema

Question 44

term for rabbit incisor teeth that continuously growing throughout life of mammal what teeth matches this term

Answer 44

elodont

Question 45

what is the term for high crowns to teeth irregular occlusal surfaces, enamel crests & dentinal grooves, cheek teeth, both premolars & molars

Answer 45

hypsodont

Question 46

what teeth are these and what type

Answer 46

Rodent incisors = elodont type

Question 47

Chinchilla & Guinea pig premolars & molars =

Answer 47

elodont (incisors) & hypsodont type (premolar and molar)

Question 48

Chinchilla & Guinea pig tooth types:

Answer 48

*elodont *hypsodont

Question 49

gerbil, hamster, mouse & rat: teeth type

Answer 49

elodont (incisor teeth) brachyodont (premolars & molars)

Question 50

anelodont: Growing or non-growing throughout life

Answer 50

not growing throughout life

Question 51

elodont: Growing or non-growing throughout life

Answer 51

continuously growing throughout life of mammal

Question 52

Term for low crowns to teeth

Answer 52

brachyodont

Question 53

what type of teeth are these

Answer 53

Rodent incisors = elodont & hypsodont type

Question 54

what key thing should you look for when identifying the ileum

Answer 54

antimesenteric iliac a.

Question 55

Answer 55

1. stomach 2. liver 3. SI

Question 56

Rats are herbivores/omnivores/carnivores?

Answer 56

omnivores

Question 57

Answer 57

Question 58

T/F rodents have a single chambered stomach

Answer 58

true

Question 59

T/F Norway (Lab) rat do NOT possess a gall bladder

Answer 59

TRUE

Question 60

Answer 60

Question 61

what kind of cervix do rats have

Answer 61

Single cervix elongated horns to hold large number of offspring

Question 62

Answer 62

Question 63

T/F Rat testicles are very identifiable (very big(

Answer 63

true

Question 64

Answer 64

Question 65

Answer 65

Question 66

Answer 66

Question 67

Norway rat: Rattus norvegicus; possess ___ pairs of mammary glands; ___mammary glands in total

Answer 67

6 pairs ; 12 in total

Question 68

Identify mammary glands 1-6

Answer 68

Question 69

Why is it important for Norway (Lab) rats to have 12 mammary glands

Answer 69

Need large number to supply large number of offspring

Question 70

what is this rat suffering from

Answer 70

Mammary gland neoplasia (Lab rats=high prevalence)

Question 71

T/F Guinea pig tend to have twins

Answer 71

true

Question 72

what is significant about the guinea pigs pelvis

Answer 72

*if sow does not have litter prior to fusion of pubic symphysis by 6 – 9 months, dystocia common *If sow has litter before fusion of pubic symphysis, then cartilage union forms & persists for life.

Question 73

Guinea pig sow w/ 2 feti; close to parturition event;________________ ligaments open prior to delivery of large feti.

Answer 73

Pubic symphysis

Question 74

T/F Dystocias is relatively common in both guinea pigs and chinchilla

Answer 74

true

Question 75

guinea pigs and chinchilla are known as being precocious what does that mean

Answer 75

showing the qualities or abilities of an adult at an unusually early age

Question 76

_____________expands prior to parturition to allow passage of large feti

Answer 76

Cartilage union

Question 77

Answer 77

haha jumpscare