cerebrospinal fluid is what the liquid in the brain is called.
cerebrospinal fluid is what the liquid in the brain is called.
what is the liquid in the brain called?
cerebrospinal fluid
human brains are surrounded by a system of connective tissue membranes called meninges that separate the brain from the skull. this three-layered covering is composed of (from the outside in) the dura mater, arachnoid mater, and pia mater. the arachnoid and pia are physically connected and thus often considered as a single layer, the "leptomeninges". between the arachnoid mater and the pia mater is the subarachnoid space which contains cerebrospinal fluid (csf). this fluid circulates in the narrow spaces between cells and through the cavities in the brain called ventricles, to support and protect the brain tissue. blood vessels enter the central nervous system through the perivascular space above the pia mater. the cells in the blood vessel walls are joined tightly, forming the blood–brain barrier which protects the brain from toxins that might enter through the blood.
brain tumor
these orns are bipolar, on one end are the olfactory dendrites with the receptors for the odors and on the other end are the axons that carry the action potential to the antennal lobe of the brain. the antennal lobes have two kinds of neurons, projection neurons (mostly excitatory) and local neurons (inhibitory, with some excitatory). the projection neurons send their axon terminals to a part of the insect brain called the mushroom bodies (important in regulating learned odor responses) and another part of the brain called the lateral horn (important in regulating innate odor responses). both of these regions are part of the protocerebrum of the insect brain.
insect olfaction