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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.
In neuroanatomy, the lateral geniculate nucleus (LGN; also called the lateral geniculate body or lateral geniculate complex) is a structure in the thalamus and a key component of the mammalian visual pathway. It is a small, ovoid, ventral projection of the thalamus where the thalamus connects with the optic nerve. There are two LGNs, one on the ...
The two inferior colliculi are situated immediately inferior/caudal to the superior colliculi; the inferior and superior colliculi are known collectively as the corpora quadrigemina (Latin for quadruplet bodies). The superior colliculi are larger than the inferior colliculi, though the inferior colliculi are more prominent. [10]
The tectospinal tract connects the superior colliculi to the cervical nerves of the neck, and co-ordinates head and eye movements. Each superior colliculus also sends information to the corresponding lateral geniculate nucleus , with which it is directly connected.
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 , and tectum .
The brain is the most well-protected organ in the human body, but it has a surprisingly high amount of microplastic pollution, according to a study published in Nature Medicine on Monday.
The bodies had no signs […] Authorities found the 57-year-old man and a 53-year-old woman in the bedroom at 431 East 154th St. in Melrose at around 4:15 p.m., according to the NYPD. 2 decomposed ...
The neck is referred to as the cervical region. The trunk of the body contains, from superior to inferior, the thoracic region encompassing the chest [1] the mammary region encompassing each breast; the sternal region encompassing the sternum; the abdominal region encompassing the stomach area; the umbilical region is located around the navel