Ruminant head Flashcards
The horns of a ruminant are closer to the eye in what kind of ruminant?
Small ruminants
Do ruminants have facial crest?
No but have a facial tuberosity at M1
Where is the infraorbital foramen in the ruminant?
Dorsal to the first cheek tooth
Do ruminants have a nasoincisive notch?
Yes
What is the foramen orbitorotundum?
Combination of the orbital fissure and round foramen
What bone projects over the foramen in the orbit and blocks them laterally?
Pterygoid foramen
Where is the foramen orbitorotundum?
Ventral to the optic canal
What window can you use to get to the foramina in the orbit?
Between the zygomatic process of the frontal bone and the coronoid process of the mandible and the zygomatic arch
What is the lacrimal bulla?
Extension of the maxillary sinus that sticks into the orbit
Why is the lacrimal bulla important?
When doing an enucleation you could break this and contaminate the surgery site
What is different about the coronoid process of the mandible in the ruminant?
Ventral to the temporal line which is more lateral and it is thinner and more sloping caudally
What is the lacrimal fossa?
Unique to the sheep and is where the cutaneous gland sits
Do ruminants have canines?
Technically yeah but they pretty much look incisors
What type of tooth are ruminant incisors?
Brachydont
What is the ruminant dental formula?
2(I0/3, C0/1, P 3/3, M 3/3)=32`
