Horse Head Lecture Flashcards

1
Q

What n are important to be aware of when anesthetizing horse head?

A

Branches of trigeminal and facial n

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

What structures are innervated by the infraorbital n and inferior alveolar/mental n?

A

Infraorbital n=upper mouth/teeth

Inferior alveolar/mental n= cheek teeth and lower mouth

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

When blocking infraorbital n, what must be done?

A

Displace levator labii superioris m to find infraorbital foramen

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

How could you find mandibular foramen to block?

A

Imaginary intersection of lateral commisure of eye and level of cheek teeth.

MEDIAL SIDE

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

Auriculopalpebral n is a branch of?

Innervates?

A

Facial n

Eyelid m

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

Where should you block auriculopalpebral n?

A

Behind or in front of zygomatic arch

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

What may happen if horse head is improperly places in lateral recumbency?

A

Partial paralysis of dorsal and ventral buccal n

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

What are vasculature structures you can take a pulse on?

A

Transverse facial a
Facial a
Masseteric a

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

“False nostril”

A

nasal diverticulum

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

Trephine

A

Hand spiral saw that was used to open sinuses in horse head

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

Conchofrontal sinus made of

A

frontal sinus

Dorsal conchal sinus

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

Maxillary sinus made of

A

Caudal maxillary sinus

Rostral maxillary sinus

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

What are some minor sinuses?

A

Sphenopalatine
Ventral conchal
Middle conchal

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

What sinuses communicate with what?

A

Both maxillary sinuses communicate with middle nasal meatus

Rostral and caudal maxillary DO NOT communicate

Several sinuses communicate with caudal maxillary sinus

Frontal and dorsal conchal sinus communicate

Conchofrontal communicates with caudal maxillary

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

What are the 3 dilated v found deep to masseter

A

Transverse facial v
Deep facial v
Buccal v

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

Importance of dorsal and ventral boundary of the surgical access to maxillary sinus?

A

Dorsal
Protects nasolacrimal duct and contents of infraorbital canal

Ventral
Prevents venous dilations ventral to the facial crest

17
Q

Surgical access boundaries to maxillary sinus

A

Ventral
Facal crest

Dorsal
Parallel to facial crest at level of infraorbital foramen

Rostral
Nasoincisive notch to find infraorbital foramen

Caudal
Medial commisure of eye

18
Q

What should be avoided when passing nasogastric tube

A

Nasal diverticulum

19
Q

Route of the nasogastric tube

A
Nostril (avoid nasal diverticulum
Ventral meatus
Nasopharynx
Laryngopharynx
Pharyngoesophageal limen
Esophagus
20
Q

Lampas

A

Irritation of gums…used to treat with hot iron

21
Q

What is the space between cheek teeth and incisors?

A

Diastema (don’t put twitch here)

22
Q

Conditions involving larynx

A

Laryngeal hemiplegia (roaring)

Epiglottic entrapment

23
Q

Important muscles on cricothyroid

A

Cricoarytenoideus dorsalis

Cricothyroideus

24
Q

What m abducts arytenoid cartilage to open glottis

A

Cricoarytenoideus

25
Q

Explain relationship between arytenoid cartilage and vocal fold

A

The bottom of the vocal folds are the vocal processes which attach to the bottom of the arytenoid cartilated

26
Q

What occupies the space that the thyroid notch creates?

A

Cricothyroid ligament

27
Q

What muscles are manipulated during tie-back surgery to correct roaring

A

Thyropharyngeus

Cricopharyngeus

28
Q

What is guttural pouch

A

Ventral diverticulum of auditory tube

29
Q

What is the pharyngeal opening of auditory tube

A

plica salpingopharyngeal

30
Q

Major structures in contact with guttural pouch

A
Retropharyngeal n (medial and lateral)
Vagus n
Glossopharyngeal n
Cranial cervical ganglion
Internal carotid a
31
Q

How to tell difference btw medial and lateral compartement of guttural pouch

A

Stylohyoid bone will divide halves
Lateral is more muscular
Medial has internal carotid and glossopharyngeal n present and hangs down further

32
Q

Surgical approach to guttural pouch

A

Viborg’s triangle

33
Q

Borders of viborgs triangle

A

Sternomandibularis/Sternocephalicus

Linguofacial v

Ramus of mandible

34
Q

Epiglottic entrapment

A

Xs mucosa covering and cartilage inverts itself

35
Q

Sound difference between epiglottic entrapment and roaring

A

Epiglottic entrapment=Expiratory sound

Roaring=Inspiratory sound

36
Q

Lengthy soft palate

A

Can cause dorsal displacement of soft palate on top of epiglottis

37
Q

What could be damaged in the boundaries of the sinuses?

A

Dorsally-nasolacrimal duct and infraorbital n

Ventrally-venous dilations