The Nervous System - Chapter 3 Flashcards
Neurons are….
Nerve cells which work electrically
Synapses are:
Gaps within nerves which work chemically
The nervous system work on an:
Electro-chemical basis
The CNS is…
The Central Nervous system
The CNS’s main functions are to:
Analyse sensory inputs/information and act on them if needed
The PNS is:
Peripheral Nervous System
The PNS is needed to…
Transfer messages from sensory nerves to the CNS as well as then sending back the correct reflex.
A reflex is?
An involuntary response to a stimulus
The ANS is?
Automatic Nervous System. Other names include, autonomic, autonomous and vegetative nervous systems.
The ANS is responsible for:
Controlling any involuntary actions, such as:
- heart beat/pulse rate,
- breathing,
- blood pressure
ANS is split into:
Sympathetic and parasympathetic where the body prepares for a fight or flight situation
