What is an air space within bone called?
Sinus. A cavity or hollow space. It is an air-filled chamber found in some skull bones. It is named for the bones in which they are located. Fossa.
What is an air filled cavity within a bone connected to the nasal cavity?
Paranasal sinuses are air-filled cavities in the frontal, maxilae, ethmoid, and sphenoid bones. These sinuses, which have the same names as the bones in which they are located, surround the nasal cavity and open into it.
What is a fossa bone?
Fossa – A shallow depression in the bone surface. Here it may receive another articulating bone or act to support brain structures. Examples include trochlear fossa, posterior, middle, and anterior cranial fossa.
What is a bony projection?
A projection is an area of a bone that projects above the surface of the bone. These are the attachment points for tendons and ligaments. In general, their size and shape is an indication of the forces exerted through the attachment to the bone.
What is a hollow cavity in the bone that should be filled with air?
sinus, in anatomy, a hollow, cavity, recess, or pocket; a large channel containing blood; a suppurating tract; or a cavity within a bone. Two types of sinus, the blood-filled and the air-filled sinuses, are discussed in this article.
What do you mean by pneumatic bones?
n. A bone that is hollow or contains many air cells, such as the mastoid process of the temporal bone.
Why are there air-filled cavities in the cranial bones?
The sinuses are air-filled cavities within skull bones that open into the nasal cavity. The sinuses function to decrease the weight of the skull and act as resonating chambers during sound production. The deepest bone of the skull, it lies between the nasal bones and the sphenoid.
What are air-filled cavities within the bones of the skull?
The skull contains air-filled cavities called sinuses. Their functions are debatable, but may be related to lessening skull weight, contributing to voice resonance, and warming and moistening inspired air.
Which bones have a fossa?
In the Skull:
- Cranial fossa. Anterior cranial fossa. Middle cranial fossa. Interpeduncular fossa.
- Hypophyseal fossa.
- Temporal bone fossa. Mandibular fossa. Jugular fossa.
- Infratemporal fossa.
- Pterygopalatine fossa.
- Pterygoid fossa.
- Lacrimal fossa. Fossa for lacrimal gland. Fossa for lacrimal sac.
- Mandibular fossa.