the skull and facial bones part 1 Flashcards
1
Q
meninges
A
refers to membranous coverings of brain and spinal cord
2
Q
how many layers of the meninges are there and what are they called
A
-3
- dura mater
- arachnoid mater
- pia mater
3
Q
name the 8 cranial bones that can be seen via lateral view
A
- frontal
- parietal x2
- occipital
- temporal x2
- sphenoid
- ethmoid
4
Q
what bone can only be seen via PA view
A
occipital bone
5
Q
name the 2 facial bones
A
- maxilla
- mandible
6
Q
what is the mandible
A
the movable part of the jaw
7
Q
name the two bones of the nasal septum (AP view)
A
- vomer
- perpendicular plate of ethmoid bone
8
Q
what are round holes through a bone referred to as
A
foramen
9
Q
foramen magnum
A
- a large hole in base of skull that the spinal cord passes through
- slightly posterior to centre
10
Q
what suture unites left and right frontal bones after birth
A
metopic suture
11
Q
what do 2 parietal bones form?
A
- greater portion of sides
- roof of cranial cavity
12
Q
what are the functions of parietal bones?
A
- cover centre of the skull
- protect right and left parietal lobes of brain
- helps shape head
13
Q
name the sutures of parietal bones and when they close
A
- sagittal suture - 22yrs
- coronal suture - 24yrs
- squamous suture - 60yrs
14
Q
what do paired temporal bones form
A
- the inferior lateral aspects of cranium
- part of cranial floor
15
Q
functions of temporal bones
A
- house structures of ears
- crossed by majority of cranial nerves
- first region to show signs of ageing
