Biopsychology- approaches Flashcards
(30 cards)
what is the nervous system
comprises of the central and peripheral nervous system
what is the central nervous system (CNS)
comprises of the brain and the spinal cord
what are the 2 functions of the CNS
control of behaviour and regulation of the body’s physiological processes.
what is the perpheral nervous system (PNS)
transmits information to the CNS from the environment ans sends messages from CNS to muscles and glands
what is the somatic nervous system(SNS)
sends information from the sense organs to the CNS. It also process information from the CNS that controls muscle action.
what is the autonomic nervous system
automatically send information to and from bodily organs. It has divisions - sympathetic and parasymphatetic
the nervous system is dived into 2 sub-systems what are they
central nervous system and peripheral nervous system.
what is the brain’s role
center of all conscious awareness. Can be divided into 4 areas- celebral cortex, cerebellum, diencephalon and the brain stem. Brain divided into 2 hemisphere (left and right) which communicate with eachother via a bridge the corpus callosum
what does the brain do with the information
sends messages to the glands and muscles
what is the role of the spinal cord
a long bundle of nerve cells that carry messages from and to the brain to body. Spinal nerves-part of the PNS- connect with specific muscles and glands. Very fast reflexes
what does the PNS refer to
any nerves and nerve cells which are not classed as part of the brain or the spinal cord. They send information via millions of neurones to the CNS from enviro and relay messages from the CNS.
there are 2 divisions of the peripheral nervous system what are they
somatic and autonomic
what are the 2 functions of the somatic nervous system
reciveing information from our senses and passing it to the CNS,
Controlling voluntary muscle movement
what is the SNS made up of
cranial nerves. these nerves have sensory and motor neurones.
what are sensory neurones
relay/send messages to the CNS from our sense organs
what are the motor neurones
relay info from the CNS to other areas of the body
what does the ANS do
responsible for involuntary (reflex/automatic) movements. communicates info to the CNS from our organs and to our organs the CNS
ANS split into 2 divisions what are they
symphatetic and parasymphatetic
what is the role of sympaphetic
helps us deal with emergencies- flight or fight- also slows down bodily processes that are less important in emergency such as digestion
parasympaphetic role
restores the body back to normal functioning after the emergency has passed. slows down heart rate and bloood pressure down. digestion beings again sometimes known as ‘rest and digest system’
what is a neurone
a nerve cell that receives and processes electrical or chemical impulses
what is a sensory neurone
has long dendrites- short axons- transmits signals from the receptors to CNS
what is the motor neurone
has short dendrites- long axons- Send messages from CNS to rest of the body
what is the relay neurone
short axons and dendrites- connect motor and sensory and other relay neurones
