Peripheral Nervous System Flashcards
What 3 muscles do neurons control?
smooth, skeletal and cardiac muscle
What 3 things do autonomic neurons regulate the secretion of?
smooth muscle, cardiac muscle and glands
What do sound waves do?
activate the cochlea
What happens when the cochlea is activated?
it sends electrical signals to the auditory areas of the brain
What does music activate?
skeletal, cardiac and smooth muscle
Where does the Peripheral Nervous system reside?
outside the brain and spinal cord
What is the PNS responsible for collecting?
sensory information from external or internal stimuli
What does PNS transmit?
sensory information from external or internal stimuli to CNS through afferent sensory neurons
What is PNS responsible for sending?
commands using different CNS neural circuits to the glands and muscles
What nerves are in the PNS
12 cranial nerves
31 spinal nerves
Where do the cranial nerves originate from?
the brain stem
Where do the spinal nerves originate from?
the spinal cord
What are the 2 divisions of the motor neurons?
somatic nervous system and autonomic nervous system
What does the somatic nervous system regulate?
the movements that are under our control
What does the somatic nervous system respond to?
external stimuli
What does the autonomic nervous system regulate?
smooth and cardiac muscle which are not directly under our control
What does the autonomic nervous system control?
internal environment
What 5 things does the autonomic nervous system consist of?
parasympathetic nervous system, sympathetic nervous system, neurotransmitters, acetylcholine and adrenaline
Parasympathetic nervous system
regulates functions known as “rest and digest”
Sympathetic Nervous system
dominates in stressful situations and emotional events, fright and flight
What happens once sound waves are converted to electrical signals
they are transferred to different areas of the brain which trigger the somatic and autonomic nervous system