Skull Osteology 1 Flashcards
23
Identify this anatomical structure of the skull
Mastoid process
(Usually larger in males vs females)
Identify this anatomical structure of the skull
Styloid Process
Identity this anatomical structure of the skull.
Ethmoid
Name this anatomical structure.
Occipital
Name this anatomical structure.
Temporal
Name this anatomical structure.
Foramen magnum
Name this anatomical structure.
Orbital Margin
Name this anatomical structure.
Maxillary process
Name this anatomical structure.
Zygomatic facial foramen
Name this anatomical structure.
Masseteric origin
Name this anatomical structure.
Frontal process
Name this anatomical structure
Temporal process
Name this anatomical structure.
Zygomaticoorbital Foramina
Name this anatomical structure.
Zygometicotemporal Forman
What is the following skull orientation?
Frankfurt horizontal plane
What is the Frankfurt Horizontal plane defined by ?
3 points :
Right and left porion ( top of each external acoustic meatus)
Left orbitale ( bottom of left orbit)
Frankfurt horizontal plane allows you to view the skull from 5 different perspectives can you list them ?
1.Norma verticalis (above view)
2.Norma Lateralis (side view)
3.Norma Occipitalis (back view)
4.Norma Frontalis ( Front view)
5.Norma Basilaris ( base view)
2 Function of Sutures on skull.
1.Sutures overlap during childbirth to reduce the size of infants heads.
- Fracture stoppers
Benefits of joints on the skull?
More joints facilitates complex growth patterns and reduces larger fractures from occurring on the skull.
What is the function of the skull ?
Protects the brain and organs of special sense as well as housing the first part of the respiratory and Alimentary tracts.
Name the 2 parts the skull can be divided into.
1 : Neurocranium
2: Viscerocranium
What does the Neurocranium consist of ?
Base and vault whose walls and roof (Calvaria) complete the bony covering .
What does the Viscerocranium consist of?
Upper part forms the orbits and nose, and the lower part, together with the mandible, constitutes the jaws.
Name the two subdivisions of the Neurocranium.
Name the following .
Lambdoid Suture
Name this muscle and it’s function.
SCM= Sternoclidalmastoid
Name the anatomical structures.
Medial and Lateral Pterygoid plates
Identify number 1
1: cribriform plate
Name structure with blue dot
Lesser wings
Part of the sphenoid bone.
Name the yellow doted structure.
Sella Turcica
Or
Pituitary Fossa
Name the Green dotted Structure.
Greater wings of the Sphenoid
What is the anterior cranial fossa made up of?
Majority of the Anterior cranial fossa is made up of the frontal bone in its Center we have the ethmoid bone.
Name the burgundy doted structure.
Name the blue dotted structure.
Cribreform Plate
Which aspects of the sphenoid bone forms part of the Mid cranium fossa.
Greater wings
Body of the sphenoid
Where is the pituitary gland situated.
Sella turcica or (pituitary fossa)
Which nerve leaves the cribriform plate and where does it pass through?
Olfactory Nerve ( sense of smell) CN 1
This nerve passes through the nasal cavity.
Name the two purple structures
Occipital condials
Identify the green structure.
Palatine
Identify the blue structures
Zygomatic / zygoma
Identify the purple structure.
Occipital
Identify the yellow structures
Temporal bone
Identify the orange structure
Parietal bone
Name the blue structure found in the first image.
Dural venous sinuses
( corresponding s -shape grooves are found in the bones intercranialy).
As seen in yellow highlighted image 2.