Nervous system Crossword
                                                          
                                                          
                                                          
                                                          
                                                          
                                                          
                                                          
                                                          
                                                          
                                                          
                                                          
                                                          
                                                          
                                                          
                                                          
                                                          
                                                          
                                                          
                                                          
                                                          
                                                          
                                                          
                                                          
                                                          
                                                          
                                                          
                                                          
                                                          
 
 
Down: 2) the superior most portion of the brainstem3)  the layer of the brain often referred to as gray matter. It is the outer portion of the cerebrum.5) nerve cells7) between brains; small part of the brain between the midbrain below and the cerebrum above11) a tough, fibrous sheath that covers the whole nerve12) a subdivision of the ANS; ganglia are connected to the thoracic and lumbar regions of the spinal cord; functions as an emergency system13) fluid that fills the subarachnoid spaces between the pia mater and arachnoid mater in the brain and spinal cord14) indentations between adjacent schwann cells16) 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 thorax18) membrane between the dura and the pia mater20) small glial cells that act as a microbe eating scavenger21) dumbbell shaped section of gray matter that helps produce sensations and associates those sensations with emotions23) the response to impulse conduction over a reflex arc24) tissue made up of nerve tracts that are covered with myelin26) tissue in the CNS made up of cell bodies and unmyelinated axons and dendrites27) chemicals by which neurons communicate28) a group of peripheral nerve fibers bundled together30) the main part of the neuron35) a neurotransmitter that is released at some of the synapses in the spinal cord and at the neuromuscular junctions37) protective membranes covering the brain and spinal cord39) connect the spinal cord to the peripheral structures such as the skkin and skeletal muscles41) the beginnings of dendrites of sensory neurons42) a microscopic space separating the axon ending of one neuron from the dendrites of another neuron44) specialized connective tissue cells that support neurons47) a neuroglial cell that has thread like extensions that extend out from the surface48) the single clongated projection of a neuron49) largest part of the brain made up of gray and white matter; functions in mental processing56) another term for the ridges, or convolutions, of the cerebrum Across: 1) innermost membrane covering the spinal cord itself3) second larges part of the human brain and helps control muscle contractions and maintain balance4) a white, fatty substance found in the sheath around some nerve6) morphine like neurotransmitter released at various spinal cord and brain synapses in the pain conduction pathway8) where the right and left hemispheres are joined9) network of intersecting nerve branches10) thin, fibroud wrapping around each fascicle15) help hold nerve fibers togeether and produce the myelin sheath17) large nucleated cells that form myelin19) 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 conditions22) conduct impulses from sensory to motor neurons25) 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 lobes29) enlarged, upward extension of the spinal cord; lowest part of the brainstem31) oart if the brainstem between the medulla oblongata and the midbrain32) a brain tumor33) the designation for the nerves of the body34) the branching projections of a neuron36) another term for a nerve impulse37) A neuron that conveys impulses from the central nervous system to a muscle, gland, or other effector tis.38) the brain and spinal cord40) axons outside the CNS that are surrounded by a segmented wrapping of myelin43) another term for the grooves of the cerebrum45) thin wrapping of fibrous connective tissue surrounding each axon in a nerve46) consists mainly of the pituitary gland, pituitary, stalk, and gray matter and acts as the major center for controlling the ANS50) the changes produced by increased sympathetic impulses allowing the body to deal any type of stress51) another term for sensory neuron52) neurotransmitters, like norepinephrine and dopamine, that may play a role in sleep, motor function, mood, and pleasure recognition53) skin surface areas that are supplied by a single spinal nerve54) a group of wrapped axons55) tough outer layer that lines the vertenral canal57) a subdivision of the PNS that consists of structures that regulate the body's involuntary functions58) a specialized type of neuron pathway
 

 

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