Anatomy of the Pituitary Gland Flashcards Preview

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Flashcards in Anatomy of the Pituitary Gland Deck (48)
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1

What comprises the diencephalon?

Thalamus and hypothalamus

2

The diencephalon cnnects which aspects of the brain?

Right and left hemispheres and midbrain

3

How is the hypothalamus connected to the pituitary?

Infundibulum

4

Into which two parts is the pituitary gland split?

Anterior and posterior

5

The pituitary gland sits within the pituitary fossa which is located in which bone?

Sphenoid bone

6

The pituitary fossa lies within what?

Sella turcica

7

What are the two types of retina within the eye?

  1. Nasal retina
  2. Temporal retina

8

The optic canal runs through which bone?

Sphenoid bone

9

The right and left optic nerves combine/cross over forming what?

Optic chiasm

10

The pituitary gland originates from which embryogenic tissue?

Ectoderm

11

Which aspect of the pituitary is most glandular?

Anterior

12

The optic chiasm gives off what?

Optic tracts

13

Where do the optic tracts synapse?

Thalamus

14

What happens after the optic tracts synapse in the thalamus?

The next axons in the chain pass via the optic radiation to the visual cortex in the occipital lobe

15

Optic nerves from the nasal retinae will _______ _______ at the optic chiasm

Optic nerves from the nasal retinae will switch sides at the optic chiasm

16

What is the name of the condition when a patient loses the ability to see bilaterally in the temporal side of their vision?

Bitemporal hemianopia

17

Which two surgical procedures can allow access to the pituitary gland?

  1. Transcranial approach (under frontal lobe)
  2. Transsphenoidal approach (via nasal cavities and sphenoid sinus)

18

Which nasal conchae bone is a bone in itself without joining another conchae bone?

Inferior nasal concha

19

Both the ________ and __________ nasal conchae are part of the _________ bone

Both the superior and middle nasal conchae are part of the ethmoid bone

20

How many types of paranasal sinuses are there?

4

21

What are paranasal sinuses?

Air filled spaces within bones surrounding the nasal cavity

22

What are the four different paranasal sinuses?

  1. Frontal sinuses
  2. Maxillary sinuses
  3. Ethmoidal air cells
  4. Sphenoid sinuses

23

Which type of mucusa lines the paranasal sinuses?

Respiratory mucosa (mucous-secreting)

24

What are some proposed functions for the paranasal sinuses?

  1. To make mucous and drain it into the nasal cavities
  2. Reduce weight of skull
  3. Add resonance to voice

25

Which type of fracture can be caused to allow for better surgical access to the pituitary via the transnasal approach?

Le fort I

26

Which artery crosses the anterior surface of the pons?

Basilar artery

27

What is the name of cranial nerve III

Oculomotor nerve

28

What is the name of cranial nerve IV?

Trochlear nerve

29

What is the name of cranial nerve VI?

Abducens nerve

30

What are the three branches of the trigeminal nerve (CN V)

  1. Opthalmic nerve
  2. Maxillary nerve
  3. Mandibular nerve