Nervous System Flashcards
(13 cards)
What is the order of reflex actions
Stimulus => receptor cell => sensory neuron => CNS => relay neuron => motor neuron => effector => response
What is the nervous system?
The nervous system is a complex network of nerves and cells that transmit signals between different parts of the body.
What are reflex actions?
Reflex actions are automatic responses to stimuli that occur without conscious thought.
What is a synapse?
A synapse is the junction between two neurons where information is transmitted from one neuron to another.
How do reflex actions work?
Reflex actions work through a pathway called a reflex arc, which includes sensory neurons, interneurons, and motor neurons.
What role do synapses play in reflex actions?
Synapses allow for the transmission of signals between neurons, facilitating reflex actions.
How do synapses transmit signals?
Synapses transmit signals through the release of neurotransmitters.
What role do neurotransmitters play in synapses?
Neurotransmitters are chemicals that transmit signals across the synaptic gap.
What happens when neurotransmitters bind to receptors?
When neurotransmitters bind to receptors, they can trigger an electrical signal in the receiving neuron.
What is the synaptic gap?
The synaptic gap is the small space between two neurons at a synapse.
What is the process of reuptake in synapses?
Reuptake is the process where neurotransmitters are reabsorbed by the sending neuron after transmitting a signal.
What is the CNS made up of
Spinal cord and brain
Why are reflex actions so quick
Conscious part of brain not involved
