nervous tissue
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
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| show | nervous, endocrine
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| nervous has 3 basic functions | show 🗑
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| show | nerve
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| spinal cord connects to the ____ through the _____ _____ of the skull and is encircled by the bones of the vertebral column | show 🗑
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| ____ is located outside the brain and the spinal cord, are small masses of nervous tissue containing primarily cell bodies of neruons | show 🗑
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| entric _____ help regulate the digestive system | show 🗑
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| show | sensory receptors
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| the ____ function is to analyze the sensory info., store some aspects and make decisions reguarding appropriate behaviors. (association or interneurons serve this function) | show 🗑
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| the ____ function is to respone to stimului by initiating action | show 🗑
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| show | brain/ spinal
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| show | -cranial/ spinal nerves (sensory & motor)-connects CNS to muscles, glands and all sensory receptors
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| motor neurons to skeletal muscles | show 🗑
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| show | SNS
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| show | autonomic (involuntary) nervous system
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| motor neurons to smooth and cardiac mucles and glands (symp/parasymp) | show 🗑
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| involuntary sensory and motor neruons control GI tract | show 🗑
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| show | sensory neruons
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| show | enteric nervous system
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| show | enteric motor neruons
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| functional unit of nervous system | show 🗑
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| show | neruons
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| show | pro. rough ER and free ribosomes for protein synthesis
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| show | neruofilaments
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| ___ move material inside cell | show 🗑
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| cell processes= | show 🗑
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| ___ are the recieving or input portions of a neuron (carry action potential toward soma) | show 🗑
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| conducts nerve impules from the neuron to the dendrites or cell body of another neuron or to an efffect organ of the body (muscle or gland) | show 🗑
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| typically short, highly branched and unmyelinated | show 🗑
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| conduct impules away from cell body | show 🗑
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| long, thin cylindrical process of cell | show 🗑
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| in axons they arise where? | show 🗑
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| show | neurotransmitters
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| show | protein synthesis
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| show | movement in one direction only- away from cell body
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| show | moves organelles & materials along surface of microtubules; either direction
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| most neurons in body are | show 🗑
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| show | multipolar
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| one main dendrite and one axon | show 🗑
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| bipolar are found where | show 🗑
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| show | unipolar
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| show | sensory neurons
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| show | sensory (afferent) neurons
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| show | motor (efferent) neurons
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| show | interneurons(association) neurons
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| half of the volume of the CNS/ smaller cells than neurons | show 🗑
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| show | neuroglial cells
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| show | astrocyte
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| show | Astrocytes
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| small cells found near blood vessels/ phagocytic role- clear away dead cells | show 🗑
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| show | ependymal cells
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| show | ependymal cells
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| derived from cells that also gave rise to macrophages and monocytes | show 🗑
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| show | satellite cells
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| show | satellite
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| show | Oligodendocytes
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| show | Oligodendocytes
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| a multilayered lipid and protein covering called the myelin sheath | show 🗑
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| show | myeliniation
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| cells encircling the PNS axons | show 🗑
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| Each cell pro. part of myelin sheath surrounding an axon in the PNS | show 🗑
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| show | myelin sheath, Schwann cells
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| show | myelin
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| Schwann cell _____&______ forms outermost layer of neurolemma with inner portion being the myelin sheath | show 🗑
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| _____ myeliniate axons in the CNS | show 🗑
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| show | myelinated processes (white in color)
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| nerve cell bodies, dendrites, axon terminals, bundles of UNmyelinated axons and neuroglia | show 🗑
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| spinal cord= | show 🗑
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| show | brain
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| a ____ is a mass of nerve cell bodies and dendrites inside the CNS | show 🗑
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| neurons are electically excitable due to the ____ difference across their membrane | show 🗑
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| communicate with two types of electrical signals: | show 🗑
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| potentials that can travel long dis. | show 🗑
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| show | graded
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| show | ion channels
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| _____ (nongated) channels are always open | show 🗑
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| show | K+
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| ____ channels open and close in response to a stimulus- results in neuron excitability | show 🗑
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| ___ ____ channels respond to voltage changes, ligands(chemicals) and mechanical pressure | show 🗑
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| _____ gated channels respond to a direct change in the membrane potential | show 🗑
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| show | ligand gated channels
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| show | mechanically gated ion channels
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| ____ ions along inside of cell mem. and ___ ions along outside | show 🗑
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| potential enegry difference at rest is | show 🗑
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| why does resting potential exist | show 🗑
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Created by:
Mollie28
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