Meninges & Posterior fossa structures (Cerebellum & Brainstem) |CT BRAIN| Chapter# 4 скачать в хорошем качестве

Meninges & Posterior fossa structures (Cerebellum & Brainstem) |CT BRAIN| Chapter# 4

The video will provide a brief overview of the anatomy of the brain on CT scan, highlighting the Meninges, meningeal folds & Posterior fossa structures (Cerebellum & Brainstem) Link to previous videos: chapter#1    • Lobes of the Brain |CT BRAIN| Chapter#1   chapter#2    • Cisterns & Ventricles |CT BRAIN| Chapter# 2   chapter#3    • Brain parenchyma, Internal capsule, Deep B...   The meninges are three protective membranes that cover the brain and spinal cord, providing support and protection to the central nervous system. The three layers of the meninges are: Dura Mater: The outermost, tough, and thick layer that acts as the first line of defense against physical impacts. Arachnoid Mater: The middle layer, which is web-like and contains the cerebrospinal fluid (CSF) that cushions the brain and spinal cord. Pia Mater: The innermost, delicate layer that closely adheres to the surface of the brain and spinal cord, following their contours. These layers work together to protect the nervous tissue, provide a barrier against infections, and maintain the circulation of cerebrospinal fluid. Dural folds are specialized extensions of the dura mater, the outermost layer of the meninges, that project into the cranial cavity and help stabilize and support the brain. The main dural folds include: Falx Cerebri: A sickle-shaped fold that separates the two cerebral hemispheres along the midline of the brain. It attaches to the crista galli of the ethmoid bone at the front and extends to the internal occipital protuberance at the back. Tentorium Cerebelli: A horizontal fold that separates the cerebrum (above) from the cerebellum (below). It acts like a tent over the cerebellum and helps prevent the weight of the cerebrum from compressing the cerebellum. Falx Cerebelli: A smaller, vertical fold that separates the two hemispheres of the cerebellum, located beneath the tentorium cerebelli. Diaphragma Sellae: A small, circular fold that covers the sella turcica of the sphenoid bone, where the pituitary gland sits, with an opening for the pituitary stalk. These folds play an important role in maintaining the structural integrity of the brain within the skull, limiting excessive movement, and helping divide and compartmentalize brain structures. usually falx cerebri and tentorium cerebelli are visible on CT scan. The posterior fossa is a small, bowl-shaped compartment at the back of the skull, located below the tentorium cerebelli.The main structures in the posterior fossa include: Cerebellum Brainstem-This consists of three parts: 1.Midbrain 2.Pons 3.Medulla Oblongata credits to the sources. chapters 0:00 intro 0:43 Meninges & Dural Folds 2:12 posterior fossa structures 2:43 axial view 3:27 sagittal view #ctscan #brain #neuroscience #neuroanatomia #brainanatomy #neurosurgery_made_easy #neurosurgerytraining #brainsurgery #ctbrain #mri #medicaleducation #howtoreadctscan #ctscanner