Nervous system Crossword
                                                          
                                                          
                                                          
                                                          
                                                          
                                                          
                                                          
                                                          
                                                          
                                                          
                                                          
                                                          
                                                          
                                                          
                                                          
                                                          
                                                          
                                                          
                                                          
                                                          
                                                          
                                                          
                                                          
                                                          
                                                          
                                                          
                                                          
                                                          
 
 
Down: 2) a subdivision of the PNS that consists of structures that regulate the body's involuntary functions3) A neuron that conveys impulses from the central nervous system to a muscle, gland, or other effector tis.4) second larges part of the human brain and helps control muscle contractions and maintain balance5) a subdivision of the ANS; ganglia are connected to the thoracic and lumbar regions of the spinal cord; functions as an emergency system6) specialized connective tissue cells that support neurons8) fluid that fills the subarachnoid spaces between the pia mater and arachnoid mater in the brain and spinal cord11) a group of nerve cell bodies located in the PNS12) another term for a nerve impulse13) chemicals by which neurons communicate17) another term for sensory neuron21) membrane between the dura and the pia mater22) the branching projections of a neuron26) thin, fibroud wrapping around each fascicle32) connect the spinal cord to the peripheral structures such as the skkin and skeletal muscles35) indentations between adjacent schwann cells37) between brains; small part of the brain between the midbrain below and the cerebrum above42) a group of wrapped axons44) protective membranes covering the brain and spinal cord45) oart if the brainstem between the medulla oblongata and the midbrain50) a group of peripheral nerve fibers bundled together Across: 1) small glial cells that act as a microbe eating scavenger3) the superior most portion of the brainstem7) a neurotransmitter that is released at some of the synapses in the spinal cord and at the neuromuscular junctions9) skin surface areas that are supplied by a single spinal nerve10) a collection of nuclei found on both sides of the thalamus, outside and above the limbic system, but below the cingulate gyrus and within the temporal lobes14) morphine like neurotransmitter released at various spinal cord and brain synapses in the pain conduction pathway15) the designation for the nerves of the body16) the single clongated projection of a neuron18) another term for motor neurons19) a subdivision of the ANS; ganglia are connected to the brainstem and the sacral segments of the spinal cord; controls many visceral effectors under normal conditions20) a white, fatty substance found in the sheath around some nerve23) another term for the grooves of the cerebrum24)  the layer of the brain often referred to as gray matter. It is the outer portion of the cerebrum.25) tissue made up of nerve tracts that are covered with myelin27) tissue in the CNS made up of cell bodies and unmyelinated axons and dendrites28) nerve cells29) consists mainly of the pituitary gland, pituitary, stalk, and gray matter and acts as the major center for controlling the ANS30) conduct impulses from sensory to motor neurons31) where the right and left hemispheres are joined33) a specialized type of neuron pathway34) neurotransmitters, like norepinephrine and dopamine, that may play a role in sleep, motor function, mood, and pleasure recognition36) help hold nerve fibers togeether and produce the myelin sheath38) enlarged, upward extension of the spinal cord; lowest part of the brainstem39) a neuroglial cell that has thread like extensions that extend out from the surface40) the response to impulse conduction over a reflex arc41) axons outside the CNS that are surrounded by a segmented wrapping of myelin42) the changes produced by increased sympathetic impulses allowing the body to deal any type of stress43) a microscopic space separating the axon ending of one neuron from the dendrites of another neuron46) the brain and spinal cord47) large nucleated cells that form myelin48) tough outer layer that lines the vertenral canal49) the main part of the neuron51) the outer cell membrane of he schwann cell52) a group of 12 pairs of nerves that attach to the undersurface of the brain and conduct impulses between the brain and structures in the head, neck, and thorax53) thin wrapping of fibrous connective tissue surrounding each axon in a nerve54) the beginnings of dendrites of sensory neurons55) another term for the ridges, or convolutions, of the cerebrum56) a tough, fibrous sheath that covers the whole nerve57) dumbbell shaped section of gray matter that helps produce sensations and associates those sensations with emotions
 

 

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