Nervous System Crossword

enables muscle action, learning, and memory Common vertebrate neurotransmitter, especially in neuromuscular junctions.
loss of feeling or sensation resulting from ether, chloroform, novocaine, etc. loss of sensation
middle layer of the meninges delicate fibrous membrane forming the middle layer of the meninges
Provide structural and metabolic support for neurons. glial cells
A threadlike extension of a neuron that carries nerve impulses away from the cell body. long fiber that carries impulses away from the cell body of a neuron
epinephrine and norepinephrine hormones derived from an amino acid and secreted by the adrenal medulla
A neuron that is connected to other neurons, not to sense organs or muscles a neuron that transmits impulses between other neurons, especially as part of a reflex arc.
three protective membranes that surround the brain and spinal cord three layers of membrane that cover the brain and spinal cord
Branchlike parts of a neuron that are specialized to receive information. microscopic branching fiber of a nerve cell that is the first part to receive the nervous impulse
Important neurotransmitter in the CNS that acts on the sympathetic nervous system. Intropin
thick, outermost layer of the meninges surrounding and protecting the brain and spinal cord the thick, tough, outermost membrane of the meninges
cause responses that alter conditions in the internal environment muscles and glands
"morphine within"--natural, opiatelike neurotransmitters linked to pain control and to pleasure. Natural analgesics that decrease pain perception.
morphinelike neurotransmitters found in the brain and adrenals This chemical is released by injured tissues and is the most potent pain stimulus known.
A cluster of nerve cell bodies, often of similar function, located in the PNS. swelling
glue cells found throughout the nervous system that provide various types of support for neurons
accumulation of fluid in the spaces of the brain abnormal accumulation of fluid (CSF) in the brain
Act as phagocytes, eating damaged cells and bacteria, act as the brains immune system phagocytic cells that ingest and break down waste products and pathogens in the CNS
a neuron that sends an impulse to a muscle or gland, causing the muscle or gland to react this carries information from the brain to the muscles; also called "efferent"
multiple sclerosis myelin sheath destruction. disruptions in nerve impulse conduction MS