Ruminant Nerve blocks Flashcards
What are horn glands?
Scent glands behind the horns of small ruminants that can be cauterized if too smelly
The trigeminal is generally…
Sensory
The facial nerve is generally..
Motor
Where does the cornual nerve come from?
Sensory nerve from the orbit from the trigeminal nerve
What does the maxillary/ infraorbital nerve supply?
Sensory to upper arcade of teeth and upper lip and muscle
What does the mandibular nerve supply?
Sensory to the lower arcade of teeth and lower lip
What does the ophthalmic nerve supply?
Manny branches in the orbit and is the origin of the infratrochlear nerve
What does the auriculotemporal nerve supply?
It is a branch of the trigeminal and supplies skin of the face and joins with the buccal branches of facial
What provides sensory to the horn?
Cornual
What does the infratrochlear nerve supply?
Branch of the ophthalmic and is sensory to the horn in small ruminants
What does the buccal branches supply?
Facial. Motor to muscles of face
What does the auriculopalpebral supply?
Facial. Motor to muscles of the eyelid
What does the auriculotemporal supply?
Trigeminal. Sensory to the face
Is there a facial artery in small ruminants?
No
What artery can bleed alot in an enucleation?
Malar artery
What artery encircles the horn base?
Cornual artery
What lymph nodes are palpable on small ruminants?
May or may not be able to palpate parotid and mandibular but they are consistent
Where does the parotid duct open in the goat and cow?
Goat: Opposite P4/
Cow: Opposite M2/
Where does the parotid duct run on the sheep?
Across the masseter like in the dog
What is the Peterson orbital ocular block?
Target all nerves that emerge from optic canal and foramen orbitorotundum by entering the orbit from the caudal aspect
What are the landmarks used for POOB?
- Angle between zygomatic arch and frontal process of the zygomatic bone
- Advance needle to a 8cm
What is the Retrobulbar ocular nerve block?
Enter the orbit cranially and alongside eyeball to block the optic canal and foramen orbitorotundum. Can do 2 points or 4 points
Where do you block the cornual nerve in the ox?
just ventral to the temporal line
Where do you block the cornual nerve in small ruminants?
Caudal to zygomatic process of frontal bone and dorsomedial margin of the orbit 1/2 way between medial canthus and horn
