Ependymal cells produce CSF (cerebrospinal fluid), which is located within the ventricles of the brain and in the subarachnoid space that surrounds the brain and spinal cord. Aside from allowing the brain to float in the skull, CSF acts as a cushion against traumaand also helps wash away some...
What cells produce the myelin sheath?Myelin SheathThe myelin sheath wraps some neuron's axons to increase the speed at which they pass electrical signals. The myelin sheath also works to protect and insulate axons. Axons are wire-like extensions on the neuron responsible for carrying signals away...
Figure 2. A microscopic view ofSaccharomyces cerevisiae, the yeast responsible for making bread rise (left). Yeast is a microorganism. Its cells metabolize the carbohydrates in flour (middle) and produce carbon dioxide, which causes the bread to rise (right). (credit middle: modification of work...
You may need any of the following if your symptoms continue or get worse:Medicines may be given to control migraines or decrease the amount of CSF you produce. This will help relieve pressure in your skull. You may need medicines to decrease extra fluid that collects in your body. You may...
Activation of GABA-B re- ceptors in the nucleus accumbens reduces firing of dopaminergic cells and inhibits the release of dopamine, thus it appears that GABA-B activation can block the increase in dopamine release that is induced by drugs of abuse. Accumulating evidence also suggests that ...
The epithelial cells of the choroid plexussecrete cerebrospinal fluid (CSF), by a process that involves the movement of Na(+), Cl(-) and HCO(3)(-) from the blood to the ventricles of the brain. This creates the osmotic gradient, which drives the secretion of H(2)O. ...
What is the blood-brain barrier? Contrast BBB and CSF.Cerebrospinal Fluid:Cerebrospinal fluid is a clear, colorless fluid that surrounds and protects the brain and spinal cord in the central nervous system. It is produced by two small glands known as the choroid plexuses. The cerebrospinal ...
Which type of glial cell in the CNS is found in the white matter of the brain and the spinal cord? Which type of glial cell in the CNS is found in the white matter of the brain and spinal cord? Which type of glial cells in the CNS is found in the white matter of the brain...
Oncolytic viruses are viruses that are either genetically manufactured or naturally made, that can kill cancer cells without affecting normal cells. The virus rapidly multiplies until the cancerous cell explodes. This releases the virus, tumor specific agents, and GM-CSF. This causes the immune syst...
What do mucous cells secrete? What are the functions of these secretions? What is a neuromuscular junction? What is the function of fluid that fills the pericardial sac? What is the role of T tubules in contraction? Describe the effects that aldosterone has on the distal convoluted tubule and...