motor goes to the skeletal muscles and consists of a single neuron that comes
out of the anterior gray horn and runs out to the effector. The somatic nervous
system includes both sensory and motor neurons. Sensory neurons are related to
touch, pain, temperature, and proprioception (sense of self position), sight,
hearing, taste, smell and equilibrium. Motor neurons innervate skeletal muscles.
has 2 neurons that run from the lateral gray horn of the CNS out to another
cluster of neurons (ganglion) outside the CNS then to the effector the
autonomic nervous system receives input from sensory receptors located in organs,
blood vessels, muscles and the nervous system. Motor neurons innervate smooth
muscle cardiac muscle and glands. Consists of two motor neurons: first neuron
(preganglionic), and the second neuron (autonomic ganglion).
nervous system is one of two main divisions of the autonomic nervous system
(ANS). Its general action is to mobilize the body’s fight-or-flight response or
how the body reacts to perceived danger. The sympathetic nervous system is a
faster system as it moves along very short neurons. When the system is
activated, it activates the adrenal medulla to release hormones and chemical
receptors into the bloodstreams. The target glands and muscles get activated. The
body speeds up, tenses up and becomes more alert. Functions that are not
essential for survival are shut down. The cardiac muscles are stimulated to increase
in the rate and constriction of the heart, dilation of bronchial tubes in the
lungs and pupils in the eyes and contraction of muscles.
parasympathetic nervous system is one of the two main divisions of the
autonomic nervous system (ANS). Its general function is to control homeostasis
and the body’s rest-and-digest response. The parasympathetic nervous system is
a slower system and moves along longer pathways. This Counterbalances the
sympathetic nervous system. It restores the body to a state of calm. The
specific responses are: decrease in heart rate, constriction of bronchial tubes
in the lungs and pupils in the eyes and relaxation of muscles.