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RSSNociceptor
A nociceptor is a sensory
receptor that sends signals
that cause the perception of
pain in response to
potentially damaging
stimulus. Nociceptors are
the nerve endings
responsible for nociception,
... > full story
Myelin
Myelin is an electrically
insulating phospholipid
layer that surrounds the
axons of many neurons. It is
an outgrowth of glial cells:
Schwann cells supply the
myelin for peripheral
neurons while
... > full story
Peripheral vision
Peripheral vision is a part
of vision that occurs
outside the very center of
gaze. There is in actuality
a very broad set of
non-central points in the
field of view that is
included in the notion of
... > full story
Optic nerve
The optic nerve is the nerve
that transmits visual
information from the retina
to the brain. The optic
nerve is composed of retinal
ganglion cell axons and
support cells. It leaves the
orbit (eye) via the optic
... > full story
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Pupillary reflex
In medicine, the pupillary reflex or pupillary light reflex, is the reduction of pupil size in response to light. It is a normal response and dependent on the function of the optic nerves and ... > more -
Peripheral nervous system
The peripheral nervous system or PNS, is part of the nervous system, and consists of the nerves and neurons that reside or extend outside the central nervous system (the brain and spinal cord) to ... > more -
Carpal tunnel
In the human wrist there is a sheath of tough connective tissue which envelopes and protects one nerve and tendons, which attach muscles to the wrist and hand bones. The carpal tunnel is the space ... > more -
Spinal cord
The spinal cord is a part of the vertebrate nervous system that is enclosed in and protected by the vertebral column (it passes through the spinal canal). It consists of nerve cells. The cord conveys ... > more -
Motor neuron
In vertebrates, motor neurons (also called motoneurons) are efferent neurons that originate in the spinal cord and synapse with muscle fibers to facilitate muscle contraction and with muscle spindles ... > more -
Oculomotor nerve
The oculomotor nerve is the third of twelve paired cranial nerves. It controls most of the eye movements (cranical nerves IV and VI also do some), constriction of the pupil, and holding the eyelid ... > more -
Sciatic nerve
The sciatic nerve is a large nerve that runs down the lower limb. It is the longest single nerve in the body. Pain caused by a compressed or damaged sciatic nerve is called sciatica. Arising from ... > more -
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Nervous System
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Nervous system
The nervous system of an animal coordinates the activity of the muscles, monitors the organs, constructs and also stops input from the senses, and initiates actions. The nervous system of vertebrate ... > more
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