What is cranial fossa?

What is cranial fossa?

A cranial fossa is formed by the floor of the cranial cavity. There are three distinct cranial fossae: Anterior cranial fossa (fossa cranii anterior), housing the projecting frontal lobes of the brain….

Cranial fossa
FMA 321144
Anatomical terminology

What is middle cranial fossa?

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.

What organs are contained in each cranial fossa?

Anatomical terminology The posterior cranial fossa is part of the cranial cavity, located between the foramen magnum and tentorium cerebelli. It contains the brainstem and cerebellum. This is the most inferior of the fossae. It houses the cerebellum, medulla and pons.

What does fossa mean in medical terms?

depression
Medical Definition of fossa : an anatomical pit, groove, or depression the temporal fossa of the skull the fossa in the liver for the gallbladder. Other Words from fossa.

What forms the cranial fossa?

The anterior cranial fossa is formed by the orbital part of the frontal bone, the cribriform plate and crista galli of the ethmoid bone, and the lesser wings and anterior part of the body (jugum sphenoidale and prechiasmatic sulcus) of the sphenoid bone (Standing, 2015).

What is fossa in the body?

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 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.

What is posterior cranial fossa?

The posterior cranial fossa is the most posterior aspect of the skull base housing the brainstem and cerebellum.

What part of the brain is cranial 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 does the cranial cavity contain?

The cranial cavity fills most of the upper part of the skull and contains the brain. The spinal cavity is a very long, narrow cavity inside the vertebral column. It runs the length of the trunk and contains the spinal cord.

What are the 3 cranial fossa?

The Anterior Cranial Fossa. The floor of the cranial cavity is divided into three distinct depressions. They are known as the anterior cranial fossa, middle cranial fossa and posterior cranial fossa. Each fossa accommodates a different part of the brain.

What is the meaning of cranial fossa?

Medical Definition of cranial fossa : any of the three large depressions in the posterior, middle, and anterior aspects of the floor of the cranial cavity: a : the posterior one that is the largest and deepest of the three and lodges the cerebellum, pons, and medulla oblongata — called also posterior cranial fossa, posterior fossa

What structures are present in the midline of anterior cranial fossa?

The anterior cranial fossa constitutes the floor of cranial vault which houses the frontal lobes of the brain. Structures present in the midline of anterior cranial fossa from anterior to posterior are: groove for superior sagittal sinus. groove for anterior meningeal vessels. foramen cecum.

What is the posterior fossa of the brain?

: the posterior one that is the largest and deepest of the three and lodges the cerebellum, pons, and medulla oblongata. — called also posterior cranial fossa, posterior fossa.

What is the fossa of the occipital bone?

condylar fossa ( condyloid fossa) either of two pits on the lateral portion of the occipital bone. coronoid fossa a depression in the humerus for the coronoid process of the ulna. cranial fossa any one of the three hollows (anterior, middle, and posterior) in the base of the cranium for the lobes of the brain.