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NLM2 Anatomy > Skull > Flashcards

Flashcards in Skull Deck (31):
0

What is the pterion?

H shaped area where frontal, parietal, greater wing of sphenoid and squamous part of temporal bones meet
Thin and can damage middle meningeal artery if hit

1

What is contained within the Petrous part of the temporal bone?

The inner and middle ear

2

Name the 4 parts of the temporal bone

Squamous part (w/zygomatic process)
Petrous part (w/mastoid process)
Tympanic part
Styloid process

3

What is contained within the mastoid process?

Mastoid air cells that communicate with the middle ear (only develop in 3rd year of life)

4

Where is the pituitary gland located?

In the sella turcica (saddle shaped hollow of sphenoid bone)

5

What does the viscerocranium consist of?

Maxilla and mandible (involved in eating)

6

What's the top of the skull called?

The vault

7

What are the small holes in the vault for?

Transmitting emissary veins

8

What is the bregma?

Where the coronal suture and saggital suture meet

9

What's the lambda?

Where the lambdoid suture and saggital suture meet

10

What type of joint is the temperomandibular joint?

Atypical synovial with articular disc
(Jaw)

11

What movements can occur at the temperomandibular joint?

Depression, elevation, protraction, retraction of the mandible
Also lower jaw side to side

12

What passes through the incisive fossa?

The nasopalatine nerve (branch of opthalmic- V1)

13

What's the crista galli?

Vertical midline projection between the cribiform plate (of the ethmoid bone)

14

What does the formanen rotundum lead to?

The pterygopalatine fossa

16

What is contained in the internal acoustic meatus?

Facial nerve (CN VII), vestibulocochlear nerve (CNVIII) and the labyrinthine artery

17

What are the 3 parts of the sphenoid bone?

Greater wings, lesser wings and body

18

What divides the nasal cavity into 2 halves?

Vomer bone

19

What is the hard palate made up from?

Palatine bone and palatine process of the maxilla

20

What passes through the foramen spinosum?

Middle meningeal vessels

21

What passes through the greater and lesser palatine foramina?

Palatine nerves (part of maxillary branch of opthalmic of CN V)

22

What passes through the carotid canals?

Internal carotid artery and sympathetic nerves

23

Where is the pituitary gland?

In a hollow of the sphenoid called the sella turcica

24

What part of the brain is found in the middle temporal fossa?

Temporal lobes

25

Where do the opthalmic arteries originate from?

From the internal carotid arteries

26

What forms the superior orbital fissure?

Between the lesser and greater wings of the sphenoid bone

27

Where is the mental foramen?

In the mandible, laterally

28

What passes through the foramen magnum?

Medulla oblongata, meninges, spinal accessory nerves (CNXI) and 2x vertebral arteries

29

What passes through the foramen rotundum?

Maxillary branch of trigeminal (CNV)

30

What is found in the posterior cranial fossa?

The cerebellum, with the tentorum cerebelli roofing it.

31

Why is the face small at birth compared to the rest of the head?

Teeth are unerrupted, nasal sinuses are undeveloped
Can fit through birth canal