Explanation:
Synapses are junctions at axon terminals where they connect to dendrites of other neurons at these junctions chemical reactions occur in order to facilitate the passage of information as chemical signals. There are several neuron types which include sensory motor and into neurons which bridge the two.
1. At neuromuscular junctions, electrical signals are transmitted:
- The action potential travels along the membrane until the synapse where it’s electrical depolarization leads to the opening of channels allowing only sodium ions to enter
- these flow through a presynaptic membrane until the concentration is built up, activating ion sensitive proteins attached to vesicles containing neurotransmitters like acetylcholine
- this leads to changes in the proteins leading to the fusion with the membrane of the presynaptic cell, so vesicles are open and neurotransmitter is released. The neurotransmitter diffuses across to chemical receptors on the presynaptic cell where they bind temporarily. This increases the permeability of the sarcolema to Na+;a new action potential is generated
2. Contraction of the sarcomere occurs via several steps.
- This action potential in the muscle, travels along T-tubules, and Ca+ ions are released by the sarcoplasmic reticulum into the sarcoplasm
- Ca and troponin combine, pulling myosin filaments, exposing the actin filament's myosin binding sites
- cross-bridge formation occurs, leading to the sliding of filaments.
- ATP drives cross-bridge cycling while mysosin pulls on actin strands
- muscle fibers shorten and contract
- later ACH is degraded in the synapse. Na ions are not released, and the action potential is not transmitted.
- the Ca channels on the SR close, while Ca is reabsorbed stopping Ca-troponin binding, closing myosin binding sites on actin and leading to cross bridge separation. The muscle fiber relaxes in their resting states.
Learn more about the autonomic nervous system at brainly.com/question/10386413
Learn more about neurotransmitters at brainly.com/question/9424160
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2 identical diploid cells
Mr. Fraser convinced the Judge to
- go out and observe the scene himself
The result of this challenge was that
- the judge granted the retrial for Francisco Carrillo and even released him so that he could help in preparing his defense before the prosecution if that was required.
In this interview with Raz, Mr. Scout Fraser who is a Forensic Psychologist that believes that all our memories are reconstructed defended a man who was convicted for the murder of a father of two 21 years ago.
He imagined the scene that saw 6 witnesses testify against Francis Carrillo and determined that the witnesses were most likely wrong with the identification. It was night and the cones of the eye could not under the dark conditions of the night correctly identify the culprit. He urged the judge to observe the scene under the same conditions.
After the observation, the judge saw reasons with Fraser. He ordered a retrial and released Carrillo to aid with the preparation of his defense.
Learn more here:
brainly.com/question/3111743
Answer:
Grapheme-color synesthesia is a consistent brain-related phenomenon. A syneshete automatically associates distinct, consistent colors with certain letters, numbers, and/or words. A word that is printed in black on a page or wall in front of you will carry its own specific color when you see it.
Explanation: