Reflexes

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Created by: SamDavies
Created on: 02-05-18 14:31

Receptor

Detects stimuli and converts to action potentials (transduction)

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Afferent

Neurons that carry information to the CNS

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Central

Interneurons found in the spinal cord and brainstem nuclei

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Efferent

Neurons that carry information away from the CNS and to the effectors

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Effectors

Deliver appropriate responses to the reflex, e.g. skeletal/cardiac/smooth muscle contraction or glandular release

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Monosynaptic

There is only a single neuron-neuron synapse

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Myotatic

A simple stretch reflex whose receptors are muscle fibres and Golgi tendon organs. The stretching of muscles can be enough to initiate a sensory response and an action potential - contraction of muscles prevents damage. It is monosynaptic

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Knee jerk

A reflex in which there is a second branch interacting with an interneuron. This leads to an inhibitory response which stops the contraction of one set of muscles, allowing for the contraction of the other set.

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Reverse myotatic

The reflex where the contraction of muscles applies pressure to sensory nerve endings, leading to excitation of the inhibitory neuron. Efferent neuron activity decreases and there is no contraction. This prevents overcontraction of muscle and damage

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Crossed extensor

A reflex where some interneurons are excitatory and some inhibitory, causing the contraction of one set of muscles (e.g. extensor) and the relaxation of the corresponding muscle (e.g. flexor)

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Other cards in this set

Card 2

Front

Neurons that carry information to the CNS

Back

Afferent

Card 3

Front

Interneurons found in the spinal cord and brainstem nuclei

Back

Card 4

Front

Neurons that carry information away from the CNS and to the effectors

Back

Card 5

Front

Deliver appropriate responses to the reflex, e.g. skeletal/cardiac/smooth muscle contraction or glandular release

Back

View more cards

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Reflexes