What is Tegmentum pontis?
What is Tegmentum pontis?
The pontine tegmentum is all the material dorsal from the basilar pons to the fourth ventricle. Along with the dorsal surface of the medulla, it forms part of the rhomboid fossa – the floor of the fourth ventricle.
What is PON anatomy?
pons, portion of the brainstem lying above the medulla oblongata and below the cerebellum and the cavity of the fourth ventricle. The pons is a broad horseshoe-shaped mass of transverse nerve fibres that connect the medulla with the cerebellum.
What is a AICA?
The anterior inferior cerebellar artery (AICA) is one of the lateral branches of the basilar artery which supplies various structures of the posterior cranial fossa, most importantly the cerebellum and pons.
What is difference between tectum and tegmentum?
The tegmentum is the ventral part of the midbrain and the tectum is the dorsal part of the midbrain. It is located between the ventricular system and distinctive basal or ventral structures at each level.
Where is the ventral tegmental area located?
midbrain
The VTA is comprised of a group of neurons located around the midline of the midbrain floor and contains mainly neurons that produce DA. The VTA–DA neurons participate in drug addiction, behavioral disorders, cognition, motivation, and locomotor activity.
Where is the cerebral cortex and what is its function?
The cerebral cortex, which is the outer surface of the brain, is associated with higher level processes such as consciousness, thought, emotion, reasoning, language, and memory. Each cerebral hemisphere can be subdivided into four lobes, each associated with different functions.
What is the medulla in the middle of?
The medulla oblongata, also known as the medulla, directly controls certain ANS responses, such as heart rate, breathing, blood vessel dilation, digestion, sneezing, swallowing and vomiting. It is a portion of the brainstem, located just below the pons and just above the spinal cord.
What is the medulla responsible for?
The medulla oblongata plays a critical role in transmitting signals between the spinal cord and the higher parts of the brain and in controlling autonomic activities, such as heartbeat and respiration.
What is Wallenberg syndrome?
Wallenberg’s syndrome is a neurological condition caused by a stroke in the vertebral or posterior inferior cerebellar artery of the brain stem.
What is PCA artery?
The Posterior Cerebral Artery (PCA) supplies the occipital lobe, the inferior part of the temporal lobe, and various deep structures including the thalamus and the posterior limb of the internal capsule. Functions in integration of cerebral cortex with the rest of the central nervous system.
What is the basilar pontis?
The basis pontis, or basilar/basal part of the pons, refers to the ventral portion of the pons, which contains white matter fibers of the corticospinal tract. lacunar infarct in this region may result in pure motor hemiparesis, ataxic hemiparesis, or dysarthria-clumsy hand syndrome
What is the basis pontis of the pons?
The basis pontis, or basilar/basal part of the pons, refers to the ventral portion of the pons, which contains white matter fibers of the corticospinal tract. 1. Schmahmann JD, Ko R, MacMore J.
What is the basilar part of the Pons called?
The basilar part of pons, basis points, is the ventral part of the pons; the dorsal part is known as the pontine tegmentum. Tissue death (infarction), in this region can impair motor functioning.
Are the crus cerebri and basilar pons part of the tegmentum?
However, the crus cerebri and basilar pons (described below) are not considered as part of the tegmentum. This is because both structures are not a part of the primitive neural tube, but develop later in the embryological timeline. As a result, they are considered and discussed as separate entities from the tectum and tegmentum.
