organs of nervous system Flashcards
what percent of neural tissue is found in the brain and spinal cord?
98%
what are the organs of the nervous system?
brain, spinal cord, nerves (cranial nerves, spinal nerves, peripheral nerves)
what is neuroglia and what are its functions?
neuroglia=specialized support tissue
many functions
structure..CSF..myelination..clean-up
what are the functions of glial cells?
maintenance, food delivery, lining, insulating, killing & cleaning
what are receptors specialized to do?
specialized to detect change & stimuli
chemoreceptors detect what?
chemical levels ~ glucose
barrocreceptors detect what?
organ pressure
mechanical detects what?
touch, pressure, vibration, pain & temperature
special receptors ~ in complex organ ~ special senses. give examples?
eyes, ears, nose, tongue
blood vessels..lymphatic..and connective tissue