A Flea Is Considered to Be a Predator on a Dog

question 63

True/False

A flea is considered to be a predator on a dog.

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Definitions:

Sympathetic

Pertaining to the sympathetic nervous system, a part of the autonomic nervous system responsible for stimulating the body's fight-or-flight response.

Parasympathetic

The part of the autonomic nervous system that is responsible for conserving energy and promoting a "rest and digest" response.

Neurotransmitters

Chemical messengers that transmit signals across a chemical synapse, from one neuron (nerve cell) to another target neuron, muscle cell, or gland cell.

Synaptic Vesicle

A small, spherical packet located within presynaptic terminals of neurons that stores neurotransmitters, which are released into the synaptic cleft during neurotransmission.