Back to AI Flashcard MakerAnatomy and Physiology /BDS2 OSCE Prep - Skull Growth And Anatomy
BDS2 OSCE Prep - Skull Growth And Anatomy
This deck covers key concepts related to skull growth and anatomy, including synchondroses, ossification centers, fontanelles, and sutures.
what is a Synchondrosis?
a primary cartilaginous joint (mainly found in the developing skeleton) - hyaline cartilage found between 2 bones
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Key Terms
Term
Definition
what is a Synchondrosis?
a primary cartilaginous joint (mainly found in the developing skeleton) - hyaline cartilage found between 2 bones
what is Spheno-Occipital Synchondrosis?
the cartilaginous joint between the sphenoid and occipital bone at the base of the skull
when does the Spheno-Occipital Synchondrosis close?
between 16-25 years old
what is an ossification centre?
the starting point for bone growth
what is the first ossification centre to appear?
the primary ossification centre
how many ossification centres does the occipital bone develop from?
6 centres
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| Term | Definition |
|---|---|
what is a Synchondrosis? | a primary cartilaginous joint (mainly found in the developing skeleton) - hyaline cartilage found between 2 bones |
what is Spheno-Occipital Synchondrosis? | the cartilaginous joint between the sphenoid and occipital bone at the base of the skull |
when does the Spheno-Occipital Synchondrosis close? | between 16-25 years old |
what is an ossification centre? | the starting point for bone growth |
what is the first ossification centre to appear? | the primary ossification centre |
how many ossification centres does the occipital bone develop from? | 6 centres |
what age do the occipital bone ossification centres close? | fused by school age |
what is a Fontanelle and why are they important? | membranous areas (soft spots) between bones where sutures interact - important as they allow bones to compress and overlap during birth |
how many fontanelles are there in the skull? NAME THEM | 6 in total 2x sphenoidal fontanelles 2x mastoid fontanelles anterior fontanelle posterior fontanelle |
when does the anterior fontanelle close? | around 2 years old |
when does the posterior fontanelle close? | between 1-3months |
when do the 2x sphenoidal fontanelles close? | by around 6 months |
what is the metopic suture? | connective tissue suture which separates the two halves of frontal bone of the skull |
when does the metopic suture fuse? | around 9 months |
what happens to the metopic suture at around 6 years old? | it disappears |
what is the mastoid process? | conical prominence projecting from the undersurface of the mastoid portion of the temporal bone (its behind the tympanic ring/plate) |
when does the mastoid process become distinct? | around 2 years old |
what is interesting about the tympanic ring? | starts as a ring but lengthens to a plate |
what is the mental symphysis? | un-fused centre of mandible |
when does the mental symphysis fuse? | 7-8 months |