Chapter 2 Flashcards
Biological psychology
Study the link between biological activity and psychological events understanding sleep hunger sex dreams depression stress
Phrenology
Bumps on the head said to know the abilities
Neuron
Consists of a cell body and it’s branching fibers nerve cell- basic building blocks of nervous systems
Dendrite
Receive info and send toward cell body LISTENER BUSHY EXTENSIONS
Axon
SPEAKER EXTENSIONS pass info or message to others neurons and muscles and glands
Myelin sheath
FATTY TISSUES insulates the axons of some neurons and helps speed up their impulses
Actions potential
Brief electrical charge that travels down the axon
Threshold
Combined signals trigger actin potential
Synapse (synaptic gap)
Gap between axon terminal sending and receiving axon
Neurotransmitters
Chemical messengers released by actin potential reaches knoblike terminal
Ach acetylcholine
Neurotransmitters that enables learning and memory and also triggers muscle contractions
Endorphins
Morphine within natural opiates
Nervous system
Electrochemical information network
Central nervous system
Brain and spinal cord
Peripheral nervous system
Links CNS w/ body’s sense receptors, muscles, and glands
Nerves
Neural cables containing many axons connect cns- pns
Sensory neurons
Neurons that carry incoming into from the sense receptors too CNS
Motor neurons
Carry out going info CNS to muscles and glands
Inter neurons
CNS neurons that internally communicate and intervene between the sensory inputs and motor outputs
Somatic nervous system
Enable voluntary control of our skeletal muscles
Autonomic nervous system
Controls the glands and the muscles of our internal organs
Sympathetic nervous system
Arouses heartbeat and blood pressure
Parasympathetic nervous system
Produces opposite effects lowers blood