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?

A

Temporal

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
Q

What do the a1/a2 receptors do?

A

Arterioles constrict

To decrease TPR

26
Q

What do M1 receptors do?

A

Decrease HR, less action potentials less contractility

27
Q

What do B1 receptors do?

A

Increase heart rate, more action potentials, more contractility

28
Q

What do B2 receptors do?

A

Cause arteriole vasodilation

Increase TPR