The Nervous system consists of a Central Nervous System (CNS) and an Autonomic Nervous System (ANS).
The Central Nervous system includes the brain and spinal cord. The brain and spinal cord control the body’s communication, regulation, coordination and sensory assessment functions.
At the base of the skull atop the axis of the spine, lies the medulla area of the brain.
Some of the many functions of the medulla include: affecting blood pressure, heart rate, metabolic rate, glandular secretions, mineral utilization, oxygen supply and water retention.
The Autonomic nervous system controls the involuntary functions of the body. The ANS is controlled by neurotransmitters signaled by the adrenal glands.
There are 2 ANS branches, the Sympathetic Nervous system and the Parasympathetic Nervous system.
The Sympathetic Nervous system takes over during stressful situations also referred to as “fight or flight.”
The Parasympathetic Nervous system takes over during non-stressful situations for example, slows down a fast heart rate.
