3 Tutorials that teach Peripheral Nervous System (PNS)
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Peripheral Nervous System (PNS)

Peripheral Nervous System (PNS)

Author: Barbara Ludins

This lesson will differentiate between the Somatic Nervous System and the Autonomic Nervous System that make up the Peripheral Nervous System.

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Notes on "Peripheral Nervous System"


(00:00-02:05) Somatic Nervous System

(02:06-02:47) Autonomic Nervous System

(02:48-03:12) Sympathetic Branch

(03:13-03:47) Parasympathetic Branch

(03:48-04:18) Recap

Terms to Know
Somatic Nervous System

Nerves connected to the sense organs and skeletal muscles, which control voluntary movement, reflexes, and sensory neurons.

Sympathetic Nervous System

Controls body responses related to “flight or fight” response, when feel like in danger.

Autonomic Nervous System

Nerves connected to internal organs, which control internal, involuntary body functions (like breathing, heart rate, and digestion).

Parasympathetic Nervous System

Helps to maintain normal body functions and calm it down when excited by the sympathetic nervous system.

Reflex Arc

Simple, automatic responses to stimuli.

Sensory Neurons

Neurons that send information to brain from sense organs.