Head Miscellaneous Flashcards

1
Q

What is the midline of the skull called

A

Sagittal suture

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2
Q

What is the cribiform plate

A

Barrier between nasal cavity and brain

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3
Q

What are the perforations in the cribiform plate for?

A

Olfactory nerves

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4
Q

What does the tympanic bulla contain?

A

Middle and inner ear (semicircular canals)

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5
Q

What des the large hole of the tympanic bulla allow the passage of?

A

Ear canal

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6
Q

What are trephine sites/holes?

A

Where a hole is drilled into the skull

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7
Q

Describe the differences between the herbivore and carnivore TMJ?

A

Herbivore allows lots of lateral movement

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8
Q

Name the holes found in the orbital bone?

A

Optic canal
Orbital fissure
Alar canal

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9
Q

What passes through the optic canal foramen?

A

CN 2 - optic

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10
Q

What passes through the orbital fissure?

A

CN III, IV, V, VI

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11
Q

What passes through the alar canal?

A

Maxillary branch of trigeminal nerve

Maxillary artery

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12
Q

What are the foramina in the inner mandible called? What passes through this?

A

Mandibular of alveolar foramen

Mandibular branch of trigeminal nerve

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13
Q

What are the outer mandibular foramina called? What passes through this?

A

Mental foramina

Mandibular branch of trigeminal nerve

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14
Q

What is the thin cutaneous muscle lying over the neck? What is its innervation?

A

Platysma

Cervical branch of the facial nerve

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15
Q

Which is the snarling muscle? Which nerve innervates this?

A

Zygomaticus

Facial nerve

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16
Q

WHat is the depressor of the ear opposite the zygomaticus called? What innervates this?

A

Parotidoauricularis

Facial nerve

17
Q

What veins does the jugular branch into?

A
Maxillary vein
Lingofacial vein (branches into lingual and facial)
18
Q

Where are the mandibular lymph nodes found?

A

Either side of the facial vein

19
Q

Where is the parotid lymph node found? What does it drain?

A

Caudal to zygomatic arch

Dorsal structures of the head

20
Q

What is the name of the swellings that attach the frenulum to the floor of the mouth?

A

Sublingual caruncles

21
Q

The tympanic bulla is part of which bone?

22
Q

Which hyoid bones are fused in the horse?

A

Stylohyoid

Epihyoid

23
Q

What is an overbite called?

A

Prognathism

24
Q

What is an underbite called?

A

Brachygnathism

25
What do the a1/a2 receptors do?
Arterioles constrict | To decrease TPR
26
What do M1 receptors do?
Decrease HR, less action potentials less contractility
27
What do B1 receptors do?
Increase heart rate, more action potentials, more contractility
28
What do B2 receptors do?
Cause arteriole vasodilation | Increase TPR