Search results
Results from the WOW.Com Content Network
The vitamin D receptor (VDR also known as the calcitriol receptor) is a member of the nuclear receptor family of transcription factors. [5] Calcitriol (the active form of vitamin D , 1,25-(OH) 2 vitamin D 3 ) binds to VDR, which then forms a heterodimer with the retinoid-X receptor .
A retinal ganglion cell (RGC) is a type of neuron located near the inner surface (the ganglion cell layer) of the retina of the eye.It receives visual information from photoreceptors via two intermediate neuron types: bipolar cells and retina amacrine cells.
Receptors are located throughout the body including the skin, epithelia, internal organs, skeletal muscles, bones, and joints. The cutaneous receptors of the skin project in an orderly fashion to the spinal cord , and from there, via different afferent pathways ( dorsal column-medial lemniscus tract and spinothalamic tract ), to the ventral ...
The VDR is widely distributed in tissues, and is not restricted to those tissues considered the classic targets of vitamin D. The VDR upon binding to 1,25(OH) 2 D heterodimerizes with other nuclear hormone receptors, in particular the family of retinoid X receptors. This VDR/RXR heterodimer complex binds to the specific VDRE in the promoters of ...
A photoreceptor cell is a specialized type of neuroepithelial cell found in the retina that is capable of visual phototransduction.The great biological importance of photoreceptors is that they convert light (visible electromagnetic radiation) into signals that can stimulate biological processes.
These photoreceptor cells project both throughout the retina and into the brain. They contain the photopigment melanopsin in varying quantities along the cell membrane, including on the axons up to the optic disc, the soma, and dendrites of the cell. [3] ipRGCs contain membrane receptors for the neurotransmitters glutamate, glycine, and GABA. [11]
The umbo is the center of the foveola which in turn is located at the center of the fovea. The fovea is located near the center of the macula. It is a small pit that contains the largest concentration of cone cells. The retina's receptor layer contains two types of photosensitive cells, the rod cells and the cone cells.
Visual neuroscience is a branch of neuroscience that focuses on the visual system of the human body, mainly located in the brain's visual cortex.The main goal of visual neuroscience is to understand how neural activity results in visual perception, as well as behaviors dependent on vision.