1.1 Nervous System: Introduction Part 2 Flashcards
What are nerves in regards to the PNS?
collection of nerve axons in the PNS
What are the two divisions of the PNS?
sensory division
motor division
What is the sensory division also known as?
afferent division
What is the motor division also known as?
efferent division
Where does the PNS receive impulses from?
sensory organs via the afferent division
Where does the PNS relay its signals from the CNS to?
muscles and glands via the motor division
What are the divisions of the efferent PNS?
somatic nervous system
autonomic nervous system
What type of control are the somatic nervous system nerves under?
conscious control
What is the function of the somatic nervous system?
controls the movements of the skeletal muscle, skin, and joints
What is the function of the autonomic nervous system?
controls glands and smooth muscle of organs
What type of control is the autonomic nervous system generally under?
NOT conscious control
What are the two divisions of the autonomic nervous system?
sympathetic
parasympathetic
What is the function of the sympathetic nervous system?
activates and prepares the body for vigorous muscular activity, stress, and emergencies
What is the function of the parasympathetic nervous system?
operates during normal situations, permits digestion, and conserves energy
