The nervous system Flashcards
Nervous system
Consists of the central nervous system and the peripheral nervous system. Communicates using electrical signals
Central nervous system (CNS)
Consists of the brain and the spinal cord and is the origin of all complex commands and decisions
Peripheral nervous system (PNS)
Sends information to the CNS from the outside world, and transmits messages from the CNS to muscles and glands in the body
Somatic nervous system (SNS)
Transmits information from receptor cells in the sense organs to the CNS. It also receives information from the CNS that directs muscles to act
Autonomic nervous system (ANS)
Transmits information to and from internal bodily organs. It is ‘autonomic’ as the system operates involuntarily (i.e. automatic). It has two main divisions: the sympathetic and parasympathetic nervous systems
What are the two main divisions of the autonomic nervous system?
The sympathetic and parasympathetic nervous systems
The nervous system is a specialised network of cells in the human body and is our…
primary internal communication system
What is the nervous system based on?
Electrical and chemical signals
What is the endocrine system based on?
Hormones
What are the two main functions of the nervous system
To collect, process and respond to information in th environment and to co-ordinate the working of different organs and cells in the body
What two subsystems are the nervous system divided into?
The Central Nervous System and Peripheral Nervous System
To collect, process and respond to information in the environment. What is this a function of?
The nervous system
To co-ordinate the working of different organs and cells in the body. What is this a function of?
The nervous system
The CNS is made up of the _____ and the ______ ____
brain, spinal chord
The _____ is the centre of all conscious awareness
brain
