What is the meaning of central canal?
What is the meaning of central canal?
Medical Definition of central canal : a minute canal running through the gray matter of the whole length of the spinal cord and continuous anteriorly with the ventricles of the brain.
Is the central canal circular or oval?
Is the central canal basically circular or oval? oval; due to the fact that the spinal cord is flattened anteriorly and posteriorly.
What surrounds the central canal?
Surrounding the canal is a single layer of cells, the ependymal layer. Surrounding the ependymal layer is the gray matter – a region containing cell bodies – shaped like the letter “H” or a “butterfly”.
What does central canal of spinal cord contain?
The central canal of the spinal cord contains cerebrospinal fluid. The pleural fluid surrounds the lungs, interstitial fluid surrounds the cells of multicellular animals, and aqueous humour is the fluid present between the lens and the cornea of the eye.
What is the gray commissure?
Medical Definition of gray commissure : a transverse band of gray matter in the spinal cord appearing in sections as the transverse bar of the H-shaped mass of gray matter.
What meatus means?
Meatus: An opening or a passageway. For example, the meatus of the ear is the opening to the ear canal.
What is a doula oblongata?
Medulla oblongata, also called medulla, the lowest part of the brain and the lowest portion of the brainstem. The medulla oblongata plays a critical role in transmitting signals between the spinal cord and the higher parts of the brain and in controlling autonomic activities, such as heartbeat and respiration.
Where is central canal located in our body?
The central canal, also referred to as the spinal foramen or ependymal canal, extends from the conus medullaris in the lumbar spine to the caudal angle of the fourth ventricle and is lined by a single layer of columnar ependymal cells .
What is a persistent central canal?
The term ‘hydromyelia’ is often used to refer to an ependymal-lined, CSF-filled spinal cord cavity which most likely represents persistence into adulthood of a foetal configuration of the anatomy of the central canal of the spinal cord .
What is the function of central canal of spinal cord?
Function. The central canal carries cerebrospinal fluid (CSF), which it receives from the ventricular system of the brain. The central canal helps to transport nutrients to the spinal cord as well as protect it by cushioning the impact of a force when the spine is affected.
Is the corpus callosum white or GREY matter?
The corpus callosum is the largest white matter structure in the brain, consisting of 200–250 million contralateral axonal projections and the major commissural pathway connecting the hemispheres of the human brain.
What is the function of GREY commissure?
a second messenger that is involved in the activities of dopamine, norepinephrine, and serotonin in transmitting signals at nerve synapses.
What is the function of meatus?
The inferior meatus is the space between the floor of the nasal cavity and the inferior turbinate. This is the largest of the air spaces. This passageway serves multiple purposes: The nasolacrimal duct (tear duct) empties any drainage from the eyes, starting at the external eye and emptying into the inferior meatus.
What is another word for meatus?
n. auditory meatus, auditory canal, nasal meatus, acoustic meatus, ear canal, external auditory canal.
Can a doula deliver a baby?
A birth doula remains with the mother during birth, offering relaxation and breathing technique support, as well as comforting services like massage, and assistance with labor positions; however, doulas are not medically trained, and cannot deliver babies.
What is the main function of central canal?
What is GREY commissure?
The term gray commissure refers to the bridge of gray matter that contains the central canal of the spinal cord and connects the gray columns on either side of the spinal cord ( Carpenter-1983 ).
What is Siringomielia?
Syringomyelia is a disorder in which a fluid-filled cyst (called a syrinx) forms within the spinal cord. Over time, the syrinx can get bigger and can damage the spinal cord and compress and injure the nerve fibers that carry information to the brain and from the brain to the rest of the body.