Anatomy of Nervous System (Peripheral Nervous System PNS)

Somatic Nervous System (SNS)

transmits messages about sights, sounds, smells, temperature, body positions etc. to the central nervous system

Somatic Nervous System (SNS)

control purposeful body movements such as raising a hand, winking, or running, and tiny almost imperceptible movements that maintain our balance and posture

Autonomic Nervous System (ANS)

regulates the glands and the muscles of internal organ

Autonomic Nervous System (ANS)

controls activities such as heartbeat, respiration, digestion, and dilation of the pupil

Autonomic Nervous System (ANS)

activities can occur automatically, even while sleeping

Sympathetic Division

most active during processes that involve spending body energy from stored reserves, such as a fight-or-flight response

Parasympathetic Division

most active during processes that replenish reserves of energy, such as sleeping

Parasympathetic Division

active during relaxation

Sympathetic Division

active during arousal

Autonomic Nervous System (ANS)

activities are linked to various emotions such as anxiety and love