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19 Cards in this Set
- Front
- Back
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Name the three sutures of the cranium |
1. Coronal 2. Lambdoid 3. Sagittal |
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What is the opening to the nasal cavity in a bony skull and why is this different to a prosection? |
The piriform opening looks like a single opening but in a prosection this is two openings divided by the cartilaginous septum. |
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What does the floor of the nasal cavities form? |
The hard palate |
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Where is the zygomaticotemporal foramen located? |
In the inner surface of the orbit, lower lateral corners |
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What does the infra temporal fossa open into? |
It opens into the pteryogopalatine fossa beneath the orbit |
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What is found in the pterygopalatine fossa? |
Parasympathetic ganglion is found here. |
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Name the three layers of the meninges |
1. Pia mater 2. Arachnoid mater 3. Dura mater
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Characteristics of the dura mater, and what are the two layers present? Are these two layers always fused? |
1. External, dense and inelastic. 2. Two layers are periosteal which strongly adheres to bone, and the meningeal layer.
The two layers are always fused except when forming dural sinuses. |
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What is a dural sinus and what does it do? |
Venous channels between the layer of the dura mater, drain blood from the brain and cranial bone. Where the meningeal layer forms extensions and folds |
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What tissue forms dural sinuses, are valves present?
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Endothelium lines dural sinuses, there are no valves present. |
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Where do the dural sinuses drain? |
Into the internal jugular.
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What is the falx cerebri |
A longitudinal fold in the meningeal layer that divides the two hemispheres |
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What is the tentorium cerebelli? |
A fold in the meningeal layer between the cerebellum and the occipital lobes of the cerebral hemispheres |
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What is the falx cerebelli? |
Meningeal folds into the posterior cerebellar notch to partially separate the cerebellar hemispheres. Attaches to the inferior surface of the tentorium cerebelli.
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Features of the arachnoid mater |
Thin, covers the brain but does not penetrate the sulci, except for the longitudinal fissure |
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What does the arachnoid mater consist of? |
Arachnoid and arachnoid trabeculae (delicate connective tissue strands that connect the pia and arachnoid mater). |
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What flows beneath the arachnoid mater? |
Cerebrospinal fluid
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What is the sella diaphragm made of what does it contain? |
It is a flat piece of dura mater that covers the sella turcica and the pituitary gland with a space for the infundibulum of the hypothalamus. |
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Where is the pia mater found and what does it attach to? |
Innermost thin membrane found on the surface of the brain and attaches to the sulci |
