Linking Nerves Together Flashcards
What is a synapse?
A small gap between one neuron and the next: which neuron has to be transmitted.
What happens when a nerve impulse reaches the end of the nerve?
Goes from: electrical to chemical to electrical.
What does the presence of a synapse mean?
That a nerve is able to communicate better with several neurons that may go to different locations.
When is a chemical transmitter substance released?
As the nerve impulse reaches the end of a first neuron.
What binds with the receptor molecules?
The transmitter when it diffuses across the synapse and binds on the membrane on the next neuron: initiates a nerve impulse in the next neuron.
What happens after the impulses has been transmitted?
The chemical transmitter is removed from synapse (taken back up by the neuron or broken down by enzyme)
What works on different types of nervous pathways?
Different types of transmitter molecules: serotonin is a transmitter that is important for brain function.
How do some transmitters work?
By inhibiting the next nerve instead of exiting it: others work on muscles instead of nerves.
What do different transmitters have?
Different receptor molecules.
What is a stimuli?
The nervous systems response to change in environment.
What are receptors?
The stimuli detected by special cells.
What are the receptors grouped as?
Grouped together or form part of organs: eye and ear.
What is an effector?
The response to the stimuli.
What do effects include?
Glands and muscles.
What do glands make?
Make and release chemicals: enzymes and hormones: insulin is released after a meal when blood sugar rises.
