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3 lis 2023 · The midbrain, or mesencephalon, is the most rostral part of the brainstem that connects the pons and cerebellum with the forebrain. For most of its part, the midbrain sits in the posterior cranial fossa, traversing the hiatus of the tentorium cerebelli. The midbrain is the shortest part of the brainstem. However, it contains many important ...
9 maj 2023 · Anatomy. The midbrain is the most superior region of the brainstem. Structure. Your brainstem connects your brain to your cervical spinal cord (neck) and consists of three main parts: Midbrain. Pons. Medulla oblongata. (Sometimes, the diencephalon is also considered part of the brainstem.)
9 maj 2023 · The midbrain is divided into two distinct portions: the anterior midbrain and the posterior midbrain. The anterior midbrain comprises the cerebral peduncles, which are bundles of nerve fibers connecting the midbrain to the cerebrum.
The central part of the tegmentum is supplied by the paramedian branches of the basilar artery. The lateral part of the midbrain is supplied by the posterior cerebral artery. Venous blood from the midbrain is mostly drained into the basal vein as it passes around the peduncle.
Midbrain, region of the developing vertebrate brain that is composed of the tectum and tegmentum. The midbrain serves important functions in motor movement, particularly movements of the eye, and in auditory and visual processing.
There are three main parts of the midbrain - the colliculi, the tegmentum, and the cerebral peduncles. Of the 12 cranial nerves, two thread directly from the midbrain - the oculomotor and trochlear nerves, responsible for eye and eyelid movement.
In the sagittal cross-section, the midbrain is divided into the crura cerebri, tegmentum and tectum. The crura cerebri form the ventral part, the tegmentum is the middle portion, and the tectum is the dorsal aspect of the midbrain.
