Full Answer
Peripheral nervous system 1 Peripheral nerves. The workhorse of the peripheral nervous system are the peripheral nerves. ... 2 Somatic nervous system. The somatic, voluntary, nervous system is responsible for providing sensory and motor innervation to skin, muscles and sensory organs. 3 Autonomic nervous system. ...
Functionally, the PNS can be divided into the autonomic and somatic nervous systems. Both of these can be further subdivided; the former into sympathetic and parasympathetic arms and the latter into sensory and motor divisions. It might sound complicated, but it’s not.
Last but not least, we have reached the autonomic division of the peripheral nervous system (ANS). It is involuntary in nature, meaning that we have no conscious control over it. The ANS is responsible for providing sensory and motor innervation to smooth muscles, blood vessels, glands, and internal organs.
List the basic functions of the nervous system. Identify the anatomical and functional divisions of the nervous system Contrast the control of the somatic division and autonomic division Contrast the effects of the sympathetic division and the parasympathetic division
The somatic nervous systemThe somatic nervous system is a component of the peripheral nervous system associated with the voluntary control of the body movements via the use of skeletal muscles.
The somatic nervous system (SoNS) is the part of the peripheral nervous system associated with the voluntary control of body movements through the skeletal muscles and mediation of involuntary reflex arcs.
sympathetic nervousThe sympathetic nervous system regulates skeletal muscle motor innervation and acetylcholine receptor stability.
Somatic motor neurons innervate involuntary effectors.
The efferent nervous system is the division of the peripheral nervous system that brings information from the brain to the body. The efferent nervous system is also called the motor nervous system because these neurons control the movement of the body.
The autonomic nervous system comprises two parts- the sympathetic and parasympathetic nervous systems. The sympathetic nervous system activates the fight or flight response during a threat or perceived danger, and the parasympathetic nervous system restores the body to a state of calm.
the somatic nervous systemSimply put, the somatic nervous system innervates skeletal muscle, whereas the ANS innervates glands, neurons of the gastrointestinal tract, and cardiac and smooth muscles of glandular tissue.
Each skeletal muscle fiber is innervated by a single motor axon. The same axon may also innervate other muscle fibers. All the fibers innervated by the same axon are called a motor unit.
The autonomic nervous system, also called the visceral efferent nervous system, supplies motor impulses to cardiac muscle, to smooth muscle, and to glandular epithelium. It is further subdivided into sympathetic and parasympathetic divisions.
sympathetic nervous system, division of the nervous system that functions to produce localized adjustments (such as sweating as a response to an increase in temperature) and reflex adjustments of the cardiovascular system.
The glossopharyngeal and vagus parasympathetic nerves innervate glands of the upper tract; these include the salivary glands, esophageal glands, gastric glands, pancreas, and Brunner's glands in the duodenum. Glands in the large intestine also receive parasympathetic innervation.
Most effector organs receive dual innervation, but some (e.g., adrenal medulla, sweat glands, pilomotor muscles, and many blood vessels) are innervated by only the sympathetic nervous system.