The cerebral aqueduct is a narrow 15 mm conduit that allows for cerebrospinal fluid (CSF). CSF flows through two passageways into the third ventricle. From the third ventricle it flows down a long, narrow passageway into the fourth ventricle.
Cerebral aqueduct is the structure within the brainstem that connects the third ventricle to the fourth. It is located in the midbrain, surrounded by periaqueductal grey matter with the tectum of midbrain located posteriorly and the tegmentum anteriorly.
It consists of groups of nerve cells-grey matter scattered in white matter. It basically connects the forebrain and the hind brain. It has four corpora quadrigemina which are the reflex centres of eye movement and auditory responses.
The corpora quadrigemina are the four colliculi, two inferior and two superior, that sit on the quadrigeminal plate on the posterior surface of the midbrain. The corpora quadrigemina are reflex centers involving vision and hearing.
The mammillary bodies are directly connected to three other brain regions: the hippocampus via the fornix, thalamus via the mammillothalamic tract, and the tegmental nuclei of the midbrain via the mammillary peduncle and mammillotegmental tract.
The primary function associated with the mammillary bodies is recollective memory. Theta waves activate CA3 neurons in the hippocampus. Information about memory transmits through the fornix to the mammillary bodies.
The optic chiasm allows the visual cortex to receive the same hemispheric visual field from both eyes. Superimposing and processing these monocular visual signals allow the visual cortex to generate binocular and stereoscopic vision.
Parieto-occipital sulcus is a deep furrow, anterior to the cuneus, that separates the occipital and the parietal lobes. The parieto-occipital sulcus marks the boundary between the cuneus and precuneus, and also between the parietal and occipital lobes.
Social deficits in nonliteral language comprehension, humor, social reasoning, and recognition of facial expression have all been documented in adults with agenesis of the corpus callosum. Very occasionally, a person will be born without a corpus callosum.
The two hemispheres in your brain are connected by a thick bundle of nerve fibres called the corpus callosum that ensures both sides of the brain can communicate and send signals to each other.
The Rolandic sulcus, also called Rolando or the central sulcus, is a very important sulcus because it delimits the boundary between motor and the sensory cortices, as well as the boundary between the frontal and parietal lobes.
Also called the central fissure, the central sulcus is a prominent sulcus that runs down the middle of the lateral surface of the brain, separating the frontal lobe from the parietal lobe.
The postcentral gyrus is the main sensory receptive area for the sense of touch. Like other sensory areas, there is a map of sensory space in this location, called the sensory homunculus.
#Brain The postcentral gyrus is a prominent gyrus in the lateral parietal lobe of the human brain. Located rostral to the central sulcus. called the somato-motor cortex because it controls volitional movements of the contralateral side of the body.
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