Mechanism of Somatic Nervous System
The mechanism of somatic nervous system are:
- Sensory Input: Sensory receptors detect stimuli such as touch, pain, and temperature changes in the environment or within the body.
- Transmission of Signals: Sensory neurons transmit signals from the receptors to the central nervous system (CNS), specifically the brain and spinal cord.
- Processing in CNS: The CNS processes sensory information, integrating it with other sensory inputs and generating appropriate motor responses.
- Motor Output: Motor neurons in the CNS send signals to skeletal muscles, initiating voluntary movements or reflex actions.
- Neuromuscular Junction: At the neuromuscular junction, motor neurons release the neurotransmitter acetylcholine (ACh) to stimulate muscle contraction.
- Muscle Contraction: ACh binds to receptors on muscle fibers, triggering a series of events that lead to muscle contraction and the execution of the desired movement.
- Voluntary Control: The SNS allows for conscious control over skeletal muscles, enabling precise and coordinated movements in response to sensory stimuli or intentional actions.
Somatic Nervous System
The somatic nervous system (SNS) controls voluntary movements and reflex arcs by transmitting sensory information to the central nervous system (CNS) and motor commands from the CNS to skeletal muscles. It consists of motor neurons that stimulate muscle contractions and sensory neurons that relay information from sensory organs. The SNS enables conscious control over bodily movements and responds to external stimuli. It plays an important role in activities such as walking, grasping, and reflex actions.
In this article, we will study the somatic nervous system, its components, functions, mechanism of action and disorders in detail.
Table of Content
- What is the Somatic Nervous System?
- What is Somatic Nervous System Made of?
- Components of the Somatic Nervous System
- Sensory Neurons
- Motor Neurons
- Neuromuscular Junctions
- Sensory Receptors
- Spinal Cord
- Brainstem and Motor Cortex
- Cranial Nerves
- Types of Somatic Nervous System
- 1. Afferent (Sensory) Nerves
- 2. Efferent (Motor) Nerves
- 3. Interneurons
- Importance of the Somatic Nervous System
- Difference Between SNS and ANS
- Mechanism of Somatic Nervous System
- Somatic Nervous System Functions
- Disorders that Affect Somatic Nervous System
- Symptoms of Somatic Nervous System Disorders
- Treatments for Somatic Nervous System Disorders