Biosychology Flashcards
What does the Nervous system incliude
Central nervous system
Peripheral nervous system
Whhat does the CNS include
Brain
Spinal cord
What does the PNS include
Autonomic nervous system
Somatic nervous system
What does the ANS do
Involuntary (breathing)
What are the sub sections in the ANS
Sympatheic- Fight or flight
Parasympathetic- Calms
What does the somatic nervous system do
Voluntary
What are dendrites
Recieves impulses from other neurons
What is nodes of ranvier
Gaps between myelin sheath
help speed up transmission of electrical impulses
What is Myelin Sheath
Surronds axon
protects, Allows impulses to be more rapid
What is axon terminals
End of axon
Communicate to next neuron across synapse
What is an axon
carriies impulse to axon terminal from cell body
What is the function of sensory neuron
transport info from receptor cells to CNS, located in PNS
Structure of the sensory
Long dendrites
Short axon
Whats the function of relay
Connect sensory and motor. In CNS
Structure of Relay
Short dendrites
Short axon
Function of motor
Transmit impulses to effector
In PNS
Structure of motor
Short dendrites
Long axon
Process of synaptic transmission
Info passed as an action potential
Cross over synaptic gap
Once reached receptor sites release of neurotransmitters
Can cause either excitatory or inhibitory response
Either broken down or reuptake
Excitatory neuron
Continue excitatory message
Activates recieving neuron
E.g Acetylcholine, Noradrenaline
Inhibitory Neurotransmitters
reduces activation
“off switches”
E.g GABA, Serotonin
Endocrine system
produce and secrete hormones to regulate body
Uses blood stream to transmit
Pituitary gland
Responds to hypothalumus
releases LH,FSH,oxytocin
Stimulates ovaries and testes
Ovaries
Releases Oestrogen
Regulates menstural cycle
testes
release testosterone
develops internal+external male genitles
Muscle growth
