Unit 2 Flashcards
EEG
Readout of waves in brain
CT
X Ray pics revealing brain damage
PET
Shows brain activity by consumption of glucose
MRI
aligns spinning atoms of brain, pics of soft brain tissue
FMRI
Reveals structure and functioning
Our brain is wired by
Our experience
Biologist psychologists
Study biological activity and psychological events
Neuron
Basic building block of nervous system
Neurons carry incoming information from sensory receptors to the brain and spinal
Sensory neurons
Neurons that carry outgoing information from brain to spinal cord to muscles and glands
Motors neurons
Neurons within the brain and spinal cord that communicate internally
Interneurons
Insulates accent and speeds of process
Myelin sheath
Action potential
Electrical charge that travels down the axon
Not mixing, before the message held out and sent
Resting potential
Generate electricity from chemical events…
Involves exchange of ions
Outside axon membrane vs inside
O: positive ions
I: negative ions
Chemical messengers
Neurotransmitters
Meeting point between neurons
Synapse
When action potential reaches the end of the axon…
Sends neurotransmitters
Swelling on brainstem is…
Medulla , controls heart beat and breathing
Brainstem parts
Medulla and pons
Pons
Controls movement
How do neurons work together
Neural networks, feedback strengthens connections
Simple motor neuron response
Reflex
What is your bodies slow chemical communication system
Endocrine
What is endocrine system
System of glands that secrete hormones
Chemical messengers that affect tissues touches the brain, influence our interest on food aggression and sex
Hormones
Adrenal glands
Release epinephrine and norepinephrine, increase heart rate ,BP, energy source
Pituitary gland
Produces hormones begins during puberty
Controlled by hypothalamus
Growth
Main gland