The term "m cerebri" refers to a part of the brain, specifically the midbrain. The spelling may seem confusing due to the use of the Latin abbreviation "m" for "medulla," which means "middle." Additionally, the use of the Latin word "cerebri" for "brain" adds to the complexity of the spelling. However, using the International Phonetic Alphabet (IPA) can help clarify the pronunciation of the word. The IPA transcription of "m cerebri" is /ɛm səˈrɛbri/.
M cerebri, also known as the "tentorium cerebelli," is a structure in the brain that plays a vital role in providing support and protection to various regions within the cranial cavity. It is a curved, thick, crescent-shaped sheet of dura mater, a tough, fibrous membrane that covers the brain and spinal cord. This structure is located between the cerebral hemispheres and the cerebellum, dividing the cranial cavity into two major compartments: the supratentorial space above and the infratentorial space below.
The main function of the M cerebri is to provide a rigid partition that supports the weight of the cerebral hemispheres and separates them from the cerebellum beneath. It acts as a horizontal shelf that prevents the downward movement of the cerebrum, thereby preventing compression of the underlying structures. Additionally, the M cerebri also plays a role in protecting the delicate structures of the brain by acting as a barrier against potential damage from impacts or sudden movements.
The name "m cerebri" is derived from its appearance, resembling a tent or "tentorium" due to its tent-like shape and location. It is an essential anatomical structure that contributes to the overall structural integrity and protection of the brain, allowing for the normal functioning of different regions within the cranial cavity.
Falx cerebri.
A practical medical dictionary. By Stedman, Thomas Lathrop. Published 1920.