Parts of the Nervous System (Leaving Cert Biology): Flashcards
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Two main divisions of the nervous system
Two main divisions of the nervous system
Central nervous system (CNS) and peripheral nervous system (PNS)
Components that make up the CNS
Components that make up the CNS
Brain and spinal cord
Role of the brain in the CNS
Role of the brain in the CNS
Master control centre for processing and decision-making
Function of neurons in the spinal cord
Function of neurons in the spinal cord
Carry messages between the brain and rest of body
Main role of the CNS
Main role of the CNS
Receives info, processes it, makes decisions, sends commands
What the PNS connects to
What the PNS connects to
CNS to all organs, muscles, and sensory receptors
Location of PNS tissue
Location of PNS tissue
All nervous tissue outside the brain and spinal cord
Definition of ganglia
Definition of ganglia
Clusters of nerve cell bodies in the PNS
Location of ganglia
Location of ganglia
Outside the CNS, near spinal cord or organs
Direction of sensory information travel
Direction of sensory information travel
From body parts towards the CNS
Direction of motor commands travel
Direction of motor commands travel
From CNS out to muscles and organs
Main function of the PNS
Main function of the PNS
Carrying messages between CNS and body (both directions)