UHS
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each of the black spaces below before clicking
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| 2 Main Systems | show 🗑
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| Central nervous system(CNS) | show 🗑
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| Perpheral Nervous system(PNS) | show 🗑
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| Autonomic Nervous system | show 🗑
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| Neurons | show 🗑
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| 3 parts of nuerons | show 🗑
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| show | branching projections that conducts impluses TO the cell body
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| show | is the elongated projection that conducts impulses AWAY from the cell
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| show | contains cell nucleus
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| show | 1-Sensory 2-Motor 3-Interneurons
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| Sensory(afferent) | show 🗑
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| show | neurons conduct impulses AWAY from the brain and spinal cord TO muscles and glands.
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| Internuerons(central or connecting) | show 🗑
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| show | support cells by bringing the cells of the nervous tissue together structurally or functionally
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| show | 1-Astrocytes 2-microglia 3-oligodendrocytes
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| Astrocytes | show 🗑
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| show | small cells that move in the inflamed brain tissue carrying on phagocytosis
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| show | form myelin sheaths on the axons in the CNS
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| show | form myelin sheaths on the axons of the PNS
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| Nerve | show 🗑
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| show | is a bundle of the central axons
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| show | refers to the tissue composed primarily of myelinated axons
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| Gray matter | show 🗑
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| show | are made of fibrous connective tissue
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| Endoneurium | show 🗑
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| show | surrounds a group of nerves, fascicle
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| show | surrounds the entire nerve
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| show | nerve impulses are conducted from receptors to effectors over the neurons pathways
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| show | conduction by a reflex arc results; contraction by a muscle or secretion by a gland
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| show | consist of sensory neurons that synapse in the spinal cord with motor neurons
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| three-neuron arcs | show 🗑
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| Nerve impulse (action potential) | show 🗑
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| show | at rest, the neuron's membrane is slightly positive on the outside and negative on the inside(from slight excess of sodium ions on outside)
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| show | inward movement of sodium ions cause the membrane to become positive on the inside and negative on the outside
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| show | section of membrane quickly recovers from depolarization
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| show | the place where impulses are transmitted from one neuron to another, the postsynaptic neuron
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| 3 structures of the synapse | show 🗑
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| show | bind specific receptor molecules in the membrane of a postsynaptic neuron, opening ion channels and thereby stimulating impulse conduction by the membrane;chemicals by which neurons communicate
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| Neurotransmitters | show 🗑
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| divisions of the brain | show 🗑
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| show | (in ascending order)
1-medulla oblongata
2-pons
3-midbrain
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| brainstem | show 🗑
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| show | conduct impulses to higher parts of the brain
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| Motor tract | show 🗑
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| show | function as important reflex centers
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| cerebellum | show 🗑
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| show | is the internal,treelike network of white matter tracts
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| show | helps control muscle contractions to produce coordinated movements to maintain balance, move smoothly, and sustain posture
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| diencephalon | show 🗑
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| Hypothalamus | show 🗑
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| Hypothalamus CONTD | show 🗑
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| Hypothalamus CONTD 2 | show 🗑
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| hypothalamus | show 🗑
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| show | a dumbbell shaped mass of gray matter extending toward each cerebral hemisphere;relays on impulses to cerebral cortex sensory areas;produces the emotions of (un)pleasantness associated with sensations
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| Pineal gland | show 🗑
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| show | LARGEST part of the human brain;outer part is the cerebral cortex;made up of lobes; composed mainly of dendrites and cell bodies of neurons
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| cerebrum CONTD | show 🗑
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| basal nuclei | show 🗑
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| Cerebrum functions | show 🗑
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| Spinal cord | show 🗑
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| tracts | show 🗑
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| spinal cord interior | show 🗑
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| spinal cord tracts | show 🗑
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| show | primary control center for ALL spinal cord reflexes
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| show | conduct impulses TO the brain
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| Motor tracts | show 🗑
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| cranial nerves | show 🗑
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| spinal nerves | show 🗑
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| dermatome | show 🗑
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| Autonomic Nervous system | show 🗑
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| show | are preganglionic autonomic neurons;conduct impulses from the spinal cord or the brainstem to an autonomic ganglion
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| show | conduct impulses from the autonomic ganglion to cardiac muscle,smooth muscle, and glandular epithelial tissue
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| show | include tissues to which autonomic neurons conduct impulses
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| show | 1-sympathetic system
2-parasympathetic system
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| show | consists of two-neuron relays;preganglionic neurons from the CNS to the autonomic ganglia, synapses & postganglionic neurons from ganglia to the visceral effectors
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| Somatic motor neurons | show 🗑
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| show | includes dendrite and cell bodies of the sympathetic pregamglionic neurons,located in the gray matter of the thoracic and upper lumbar segments of the spinal cord
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| show | axons leave the spinal cord in the anterior roots of spinal nerves , extend to sympathetic ganglia and synapse with several postganglionic neurons whose axons extend to the spinal cord or autonomic nerves to terminate in visceral effectors
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| chain of sympathetic ganglia | show 🗑
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| SNS CONTD2 | show 🗑
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| fight or flight response | show 🗑
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| Parasympathetic preganglionic neurons | show 🗑
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| show | synapses with postgagnlionic to only one effector;dominates control of many visceral effectors under normal everyday conditions;counter balance sympathetic functions
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| Cholinergic fibers | show 🗑
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| adrenergic fibers | show 🗑
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| show | also functions in ways that maintain homeostasis;many visceral effectors are doubly innervated, means they receive fibers from pararsympathetic and sympathetic didvisins;influenced in opposite ways of the teo divisions
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| limbic system | show 🗑
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| meninges | show 🗑
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| show | tough outer layer that lines the vertebral canal
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| pia mater | show 🗑
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| show | membrane between pia nad dura mater
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| show | small cavity, filled with CSF
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| cerebrospinal fluid CSF | show 🗑
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| show | structure connecting the right and left halves of the cerebrum
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| gyri | show 🗑
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| sulci | show 🗑
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| show | indentations between adjacent schwann cells
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| show | outside cell membrane of a schwann cell
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| olfactory | show 🗑
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| show | vision
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| auditory | show 🗑
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