3: Anatomy - orbital autonomics Flashcards Preview

Ophthalmology Week 1 2017/18 > 3: Anatomy - orbital autonomics > Flashcards

Flashcards in 3: Anatomy - orbital autonomics Deck (74)
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1

Which two bones of the bony orbit is the suspensory ligament attached to?

Lacrimal (medially)

Zygoma (laterally)

2

If the zygoma is fractured, what happens to the suspensory ligament and the eye?

What symptom does this cause?

Suspensory ligament ruptures and eye drops

Diplopia (double vision)

3

Which cranial nerve is response for the sensation of the face?

CN V

(Trigeminal nerve)

4

Which nerves are responsible for sensation of

a) mandible and TMJ

b) maxilla

c) angle of mandible

d) cornea, conjunctiva and bridge of nose

a) CN V3

b) CN V2

c) C2 and C3

d) CN V1

5

What are the names of

a) CN V1

b) CN V2

c) CN V3?

a) Ophthalmic divison of trigeminal nerve

b) Maxillary division of "" ""

c) Mandibular division of "" ""

6

Which cranial nerves are responsible for the

a) sensory

b) motor

parts of the blink reflex?

a) CN V1

b) CN VII

7

Which cranial nerve supplies the orbicularis oculi?

CN VII (Facial nerve)

8

Which part of the orbicularis oculi is responsible for blinking?

Palpebral part

9

Which nerves pass through the

a) supraorbital notch / foramen

b) infraorbital notch

and which cranial nerves do they belong to?

a) Supraorbital nerve from CN V1

b) Infraorbital nerve from CN V2

10

Which fluid nourishes the cornea and washes away debris?

Lacrimal fluid

11

Which structures control

a) pupil diameter

b) lens shape?

a) Iris

b) Ciliary body

12

Where do sympathetic nerves originate?

Autonomic centres in the brain

13

At which levels do sympathetic nerves exit the spinal cord?

T1 L2

14

Sympathetic nerves exit the spinal cord from __ - __.

T1 L2

15

After exiting the spinal cord, where do sympathetic nerves go?

Sympathetic chain

16

How do sympathetic nerves reach somatic areas e.g the skin from the sympathetic chain?

Alongside spinal nerves

17

How do sympathetic nerves reach visceral areas i.e the organs?

In splanchnic nerves:

cardiopulmonary splanchnic nerves

abdominopelvic splanchnic nerves

18

How do sympathetic nerves reach

a) organs

b) the skin?

a) Splanchnic nerves

b) Spinal nerves

19

At which spinal level do sympathetic nerves exit the spinal cord to supply the head and neck?

T1

20

The sympathetic nervous system travels in the ___ outflow before reaching the sympathetic chains.

thoracolumbar outflow

T1 to L2

21

Where do sympathetic nerves synapse in the head and neck?

Superior, middle and inferior cervical ganglia

22

Sympathetic nerves for the head and neck exit the spinal cord at __ and travel in the sympathetic chains before synapsing where?

T1

Superior, middle and inferior cervical ganglia

23

After they synapse at the cervical ganglia, which structures do sympathetic nerves travel alongside?

Arteries

In peri-arterial plexuses

24

Which artery transports post-synaptic sympathetic nerves to the orbit?

Ophthalmic artery

25

Which cranial nerves do parasympathetic nerves come from?

CN III (Oculomotor)

CN VII (Facial)

CN IX (Glossopharyngeal)

CN X (Vagus)

26

CN III, VII, IX and all transmit (sympathetic / parasympathetic) fibres.

parasympathetic

27

Apart from cranial nerves, which area transmits parasympathetic fibres?

Sacrum

28

The parasympathetic nervous system has a ___ outflow - why?

craniosacral

Parasympathetic nerves originate from CN III, VII, IX and plus the sacral spinal nerves

Where as the sympathetic nervous system has a thoracolumbar outflow because its nerves come from T1 - L2 spinal nerves only

29

The (sympathetic / parasympathetic) nervous system supplies the body wall.

sympathetic

30

Which internal organs are supplied by parasympathetic fibres of

a) CN III

b) CN VII

c) CN IX

d) CN X

e) Sacral spinal nerves?

a) Eye

b) Submandibular, sublingual and lacrimal glands

c) Parotid glands

d) Neck, chest and abdominal organs up to midgut

e) Hindgut, pelvic and perineal organs