What are the major features of intracranial fossa of the skull?
The anterior cranial fossa consists of three bones: the frontal bone, ethmoid bone and sphenoid bone. It is bounded as follows: Anteriorly and laterally it is bounded by the inner surface of the frontal bone.
What is a fossa in the skull?
In anatomy, a fossa (/ˈfɒsə/; plural fossae (/ˈfɒsiː/ or /ˈfɒsaɪ/); from the 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). Some examples include: In the Skull: Cranial fossa.
What structure covers the posterior cranial fossa?
Borders. The posterior cranial fossa is comprised of three bones: the occipital bone and the two temporal bones.
What structures occupy the middle cranial fossa?
The middle cranial fossa consists of three bones – the sphenoid bone and the two temporal bones. Its boundaries are as follows: Anteriorly and laterally it is bounded by the lesser wings of the sphenoid bone. These are two triangular projections of bone that arise from the central sphenoid body.
What does the middle cranial fossa control?
The middle cranial fossa is a butterfly-shaped depression of the skull base, which is narrow in the middle and wider laterally. It houses the temporal lobes of the cerebrum.
Where is the middle fossa?
The middle cranial fossa, deeper than the anterior cranial fossa, is narrow medially and widens laterally to the sides of the skull. It is separated from the posterior fossa by the clivus and the petrous crest.
Where is the Pterygopalatine fossa?
The pterygopalatine fossa (PPF) is a small, clinically inaccessible, fat-filled space located in the deep face that serves as a major neurovascular crossroad between the oral cavity, nasal cavity, nasopharynx, orbit, masticator space, and the middle cranial fossa.
Which bones contain a fossa?
The orbital part of the frontal bone, the cribriform plates of the ethmoid bone with the crista galli, and the lesser wings and jugum of the sphenoid bone form the anterior cranial fossa. It is occupied mainly by the frontal lobes of the cerebral hemispheres of the brain.
What is the function of a fossa?
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 an example of a fossa?
Learning Objectives
| Bone Markings (Table 7.2) | ||
|---|---|---|
| Marking | Description | Example |
| Fossa | Elongated basin | Mandibular fossa |
| Fovea | Small pit | Fovea capitis on the head of the femur |
| Sulcus | Groove | Sigmoid sulcus of the temporal bones |
How many types of Fossa are there?
Across Madagascar, people distinguish two kinds of fossa—a large fosa mainty (“black fossa”) and the smaller fosa mena (“reddish fossa”)—and a white form has been reported in the southwest.
Is a fossa a cat?
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.
Why is a fossa not a cat?
Fossas of Madagascar are the largest carnivore on that island, and are particularly cat-like animals. It was, in fact, once considered a cat because of the cat-like shape of its head, with shortened face, rounded ears and body form. They are nocturnal, live in the forests and feed exclusively on meat.
How do you pronounce fossa cat?
Native only to the island nation of Madagascar, off the east coast of Africa, fossas are that island’s largest carnivores. Locals pronounce the name “foo-sa” and “foosh.”
How does a fossa live?
Life in Madagascar The elusive fossa is a solitary animal and spends its time both in the trees and on the ground. It is active at night and also during the day. Females give birth to an annual litter of two to four young, and adulthood is reached after about three years.
What does the term Fossa mean?
(Entry 1 of 2) : an anatomical pit, groove, or depression.
What is Baobab oil?
Baobab oil is cold-pressed from seeds for various uses, from cooking to hair care to skin care. Baobab oil is rich in omega-3 fatty acids and other fats, including: palmitic acid. oleic acid. linolenic acid.
What does Baobab spell?
any large tree belonging to the genus Adansonia, of the bombax family, especially A. digitata, which is native to tropical Africa, has an exceedingly thick trunk, and bears a gourdlike fruit.