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Flashcards in Head and Neck Deck (8)
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1
Q

Fontanelles in developing skull persist until…

A

2 years old,

fuse together, before = soft spots

2
Q

what is a suture in skull?

A

fibrous connection between (fused) bones;

  • sagittal
  • coronal
  • lambdoid
3
Q

bregma

A

the point at which multiple sutures meet up;

4
Q

pterion

A

special, particularly thin area in skull;

on middle lateral portion, where coronal and sagittal sutures line up.

5
Q

characteristics of dura mater covering brain

A

Strongest layer of meninges, adheres to skull;
2 layers: periosteal and meningeal
*mostly adherent but w/ space in middle for venous sinuses

6
Q

CSF (cerebral spinal fluid) mostly located in…

A

subarachnoid space

* space maintained by trabeculae

7
Q

blood supply to meninges

A
  1. anterior meningeal aa (from ethmoid aa)
  2. middle meningeal a (from maxillary a)
  3. posterior meningeal aa (from occipital and ascending pharyngeal aa)
8
Q

sensation in brain?

A

No!
BUT do have sensory innervation of meninges to sense swelling/shrinkage
– from trigeminal and upper cervical nn.