M5S1 Organization Of The Nervous System Flashcards
What does the nervous system consist of
Brain, spinal cord, sensory organs and all of the nerves within the body
Function of the nervous system
Body’s control and communication system
-complex system that controls both voluntary and involuntary processes
-simplified into 3 steps:
Sensory input, integration, and motor output
- refer to goodnotes
In very simple terms, describe the function of the nervous system
To gather information from the external or internal environment, integrating multiple signals to create a complete picture, and executing a motor output response to the environment
Organization of the nervous system
Divided into two principal subdivisions:
- Central Nervous System (CNS)
-made up of the brain and spinal cord
-commonly referred to as the “control center” of the body
-where all signals come to and from, where integrated and where information can be stored - Peripheral Nervous System (PNS)
-composed of all the nerves outside of the brain and spinal cord
-includes: cranial nerves, spinal nerves, the autonomic nervous system, the special sense organs
-brings signals to and from the central nervous system
Overview of the nervous system
- refer to goodnotes image
What is one similarity of the efferent and afferent neurons
Both are part of the PNS and function to carry electrical signals
Explain one difference between efferent and afferent neurons
Efferent neurons are part of the motor division and carry signals away from the CNS
Afferent neurons are part of the sensory division and carry signals to the CNS