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.
Where is the fossa on the body?
The fossa is located behind the zygomatic process of the frontal bone in the anterior and lateral part of the orbital roof. fossa for the lacrimal sac A vertical groove, some 5 mm deep and about 14 mm high, formed by the frontal process of the maxilla and lacrimal bones and which contains the lacrimal sac.
How would you describe a fossa?
The fossa (Cryptoprocta ferox) is the largest carnivorous mammal on the island of Madagascar. They can reach nearly six feet in length, with half of that due to their long tails. They look like a cross between a cat, a dog, and a mongoose. Fossas have slender bodies, muscular limbs, and short, reddish-brown coats.
What bones have Fossae?
Each lacrimal bone is a small, rectangular bone that forms the anterior, medial wall of the orbit (see Figure 7.4 and Figure 7.5). The anterior portion of the lacrimal bone forms a shallow depression called the lacrimal fossa, and extending inferiorly from this is the nasolacrimal canal.
How many fossas are in skull?
There are three distinct cranial fossae: Anterior cranial fossa (fossa cranii anterior), housing the projecting frontal lobes of the brain. Middle cranial fossa (fossa cranii media), separated from the posterior fossa by the clivus and the petrous crest housing the temporal lobe.
What is fossa biology?
In anatomy, a fossa (/ˈfɒsə/; plural fossae (/ˈfɒsiː/ or /ˈfɒsaɪ/); from Latin fossa, “ditch” or “trench”) is a depression or hollow, usually in a bone, such as the hypophyseal fossa (the depression in the sphenoid bone).
How does a fossa survive?
HABITAT AND DIET
That extra-long tail helps the fossa balance and jump from branch to branch. Retractable claws like those of a cat and flexible ankle joints help it climb down a tree headfirst! Although it spends a lot of time in trees, the fossa is just as comfortable running flatfooted like a bear along the ground.
