A reflex pathway stimulates the sympathetic nervous system to increase the heart rate. In this reflex pathway, the heart is the target.
Reflex pathway is the path travelled by a reflex action. A reflex is an involuntary action produced due to a sudden stimulus to the body. Any pathway consists of following 5 steps: sensor, sensory neuron, control center, motor neuron, and muscle.
Sympathetic nervous system is the part of the brain responsible for activating the flight-and-fright responses of the body. This is responsible for increasing the heart rate of the body, dilation of pupils, piloerection, etc. The hormones that help in activating this nervous system are: the epinephrine and the norepinephrine.
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