WebbThe nerve impulse is a wave of depolarization traveling along the axon of the motor nerve such that the resting membrane potential of about −70 millivolt is reversed, becoming briefly positive. At the nerve terminal, … Webb3 apr. 2024 · What is the first step of a nerve impulse? Nerve impulses begin in a dendrite, move toward the cell body, and then move down the axon. A nerve impulse travels along the neuron in the form of electrical and chemical signals. The axon tip ends at a synapse. A synapse is the junction between each axon tip and the next structure.
Major Structures and Functions of the Brain - Discovering the Brain ...
WebbB. A sensory nerve running from a hand to the spinal cord. C. A motor nerve going from the brain to a skeletal muscle. D. A nerve running from the spinal cord to the stomach wall. 47. In a reflex arc, interneurons initiate nerve impulses in A. effectors. B. motor neurons. C. sensory neurons. D. sensory receptors. 48. WebbOrganization of N.S. • Central nervous system (CNS) – Brain – Spinal cord • Peripheral nervous system (PNS) – Nerves outside the brain and spinal cord – Sensory (afferent) division • Nerve fibers that carry information to the central nervous system – Motor (efferent) division • Nerve fibers that carry impulses away from the central nervous … infosys was founded in which year
The Initiation and Propagation of Impulses - Essay Example
WebbThe Phrenic Nerves: A set of two nerves that brings nerve impulses from the spinal cord to the diaphragm. primary motor cortex: The region in the brain that initiates all voluntary muscular movement, including those for respiration. Voluntary respiration is any type of respiration that is under conscious control. WebbThe hair cells located in the organ of Corti transduce mechanical sound vibrations into nerve impulses. They are stimulated when the basilar membrane, on which the organ of Corti rests, vibrates. The hair cells … WebbA nerve impulse is generated when the stimulus is strong. This stimulus triggers the electrical and chemical changes in the neuron. As mentioned already there are different ions on either side of the cell membrane. … misty pokemon card for sale