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The inferior colliculus ( IC) ( Latin for lower hill) is the principal midbrain nucleus of the auditory pathway and receives input from several peripheral brainstem nuclei in the auditory pathway, as well as inputs from the auditory cortex. [1] The inferior colliculus has three subdivisions: the central nucleus, a dorsal cortex by which it is ...
62403. Anatomical terms of neuroanatomy. [ edit on Wikidata] In neuroanatomy, the superior colliculus (from Latin 'upper hill') is a structure lying on the roof of the mammalian midbrain. [1] In non-mammalian vertebrates, the homologous structure is known as the optic tectum or optic lobe. [1] [2] [3] The adjective form tectal is commonly used ...
The heart is a muscular organ situated in the mediastinum.It consists of four chambers, four valves, two main arteries (the coronary arteries), and the conduction system. The left and right sides of the heart have different functions: the right side receives de-oxygenated blood through the superior and inferior venae cavae and pumps blood to the lungs through the pulmonary artery, and the left ...
The collicular artery is the first artery that arises from the posterior cerebral artery just distal to the bifurcation of the basilar artery. The collicular artery or quadrigeminal artery arises from the posterior cerebral artery. This small artery supplies portions of the midbrain, [1] especially the superior colliculus, inferior colliculus ...
The brainstem (or brain stem) is the stalk-like [1] : 152 part of the brain that interconnects the cerebrum and diencephalon with the spinal cord. [2] In the human brain, the brainstem is composed of the midbrain, the pons, and the medulla oblongata. [3] [1] : 152 The midbrain is continuous with the thalamus of the diencephalon through the ...
Dorsal cochlear nucleus. The dorsal cochlear nucleus ( DCN, also known as the " tuberculum acusticum ") is a cortex-like structure on the dorso-lateral surface of the brainstem. Along with the ventral cochlear nucleus (VCN), it forms the cochlear nucleus (CN), where all auditory nerve fibers from the cochlea form their first synapses.
In the brain, the corpora quadrigemina ( Latin for "quadruplet bodies") are the four colliculi—two inferior, two superior —located on the tectum of the dorsal aspect of the midbrain. They are respectively named the inferior and superior colliculus. The corpora quadrigemina are reflex centers involving vision and hearing.
Superior (from Latin super 'above') describes what is above something and inferior (from Latin inferus 'below') describes what is below it. For example, in the anatomical position, the most superior part of the human body is the head and the most inferior is the feet. As a second example, in humans, the neck is superior to the chest but ...