WebA nerve impulse is an all-or-nothing response depending on if the stimulus input was strong enough to reach threshold. If a neuron responds at all, it responds completely. A greater stimulation does not produce a stronger impulse. Figure 8.4.2 An action potential speeds along an axon in milliseconds. WebWhen the nerve impulse reaches the dendrites at the end of the axon, chemical messengers called neurotransmitters are released. These chemicals diffuse across the synapse (the gap between the...
Neurons (Nerve Cells) Structure, Function & Types - SimplyPsychology.org
WebDec 7, 2024 · Neurons carry messages via action potentials. If a neuron receives a large number of inputs from other neurons, these signals add up until they exceed a particular threshold. Once this threshold ... WebSep 10, 2024 · Once a nerve impulse has triggered the release of neurotransmitters, these chemical messengers cross the tiny synaptic gap and are taken up by receptors on the surface of the next cell. These … st anthony canonization date
Slide show: How your brain works - Mayo Clinic
WebThe anatomical pathway of a reflex is called the reflex arc. It consists of an afferent (or sensory) nerve, usually one or more interneurons within the central nervous system, and an efferent (motor, secretory, or secreto … WebApr 20, 2016 · Slide show: How your brain works. A nerve cell (neuron) communicates with other cells through electrical impulses when the nerve cell is stimulated. Within a neuron, the impulse moves to the tip of an axon and causes the release of neurotransmitters, chemicals that act as messengers. Neurotransmitters pass through the synapse, the gap between ... WebSensory neuron sends electrical impulses to a relay neuron, which is located in the spinal cord of the CNS. Relay neurons connect sensory neurons to motor neurons. Motor neuron … st anthony breckenridge mountain clinic