Match each structure of a neuron to its respective function. Dendrites Cell body Direction of nerve impulse Axon Myelin sheath (glial cells) Node of Ranvier Terminal buttons Synapse Drag each item on the left to its matching item on the right. receive chemical signals from other neurons integrate and store information cell body (soma) terminal buttons axondendrites holds neurotransmitters in vesicles and releases them into the synaptic cleft conducts electrical impulse from the cell body to the terminal buttons
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Below figure shows a synapse formed between two neurons. Presynaptic neuron Postsynaptic neuron Fill in the blanks by using the words listed below. [6 pt] The figure above shows a chemical synapse through which electrical signals are transmitted from one neuron to another via messenger molecules called __________. When an action potential reaches the __________ of a presynaptic neuron, these messenger molecules inside the __________ are released out of the presynaptic neuron to the __________. Then they bind to the __________ present on dendrites of the postsynaptic neuron, causing them to open up. Once they are opened, specific ions depending on the type of the channel flow in or out of the postsynaptic neuron via __________. The membrane potential of the postsynaptic neuron changes, either increases or decreases. cell body leak channels active transport synaptic cleft diffusion axon terminals ligand-gated ion channels carbohydrates synaptic cells nucleus neurotransmitters synaptic vesicles
Shaiju T.
Provide receptive surface on the neuron for input from the environment or from other cells: Dendrite Myelin Synaptic end bulb Nissl bodies Neurofilaments Endoneurium Axon Microtubules Endomysium Schwann cell. Conducts impulses away from the cell body to other neurons, muscle, or glands. Provide structural support to the cell and axon. An orderly arrangement of the cell's rough endoplasmic reticulum and free ribosomes. Swollen end of an axon terminal filled with vesicles with neurotransmitter. Cell of the peripheral nervous system that produces myelin to wrap axons. A protein and fat substance that is produced by the Schwann cell and wraps the axon. A layer of dense irregular connective tissue around individual axons. A layer of dense irregular connective tissue around individual myofibers. Assist with vesicular transport within the neuron.
Sri K.
Neurons and Nervous Tissue Matching Match each of the following with their correct function/description. There may be more than one correct answer for each numbered item. If so, include all correct answers. 1. Fatty sheath surrounding some nerve fibers. 2. Neuroglia found in the CNS. (two answers) 3. Highly concentrated ion inside the resting neuron. 4. Neurons that carry impulses to CNS. 5. Provide most of the structural support for the CNS. 6. Projections responsible for carrying impulses to cell body. 7. Active in maintaining the resting membrane potential. 8. Transports action potential away from cell body. 9. Primary extracellular cation in the resting neuron. 10. Neurons that carry impulses to glands or muscles. a. dendrites b. ependymal cells c. sodium d. myelin e. efferent neurons f. potassium g. afferent neurons h. astrocytes i. axon j. Na+/K+ pump Terminology Challenge
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