Examlex
Reverse firewalls allow all incoming traffic except what the ACLs are configured to deny.
Central Nervous System
Comprising the brain and spinal cord, it processes information and is the primary control center for the body.
Hormones
Chemical messengers produced by the endocrine glands, these compounds regulate various physiological functions and behaviors.
Neurotransmitters
Chemical messengers in the body that transmit signals from nerve cells to target cells.
Chemical Messengers
Substances in the body that transmit signals from one cell to another, often referred to as hormones or neurotransmitters.
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