The Neuron
The brain’s communicator
Neuron
Who introduced the concept of natural selection
Charles Darwin
drugs that reduce neural activity and slow body functions
Depressants
What nervous system is in charge of voluntary movements
Somatic Nervous system
___ and their derivatives; they depress neural activity, temporarily lessening pain and anxiety
Opioids
What is the role of the Myelin sheath
Speed up signal
traits that help organisms survive and reproduce get passed down
Natural selection
psychedelic (“mind-manifesting”) drugs that distort perceptions and evoke sensory images in the absence of sensory input
Hallucinogens
What nervous system is made up by the brain and spinal chord
Central Nervous System
a neurotransmitter’s reabsorption by the sending neuron
Reuptake
What is the path of a electrical signal using cell body, axon, dendrites
Dendrites -> cell body -> axon
This lens of psychology is most concerned with nature vs nurture
Evolutionary psychology
a molecule that increases a neurotransmitter’s action
Agonist
Sympathetic nervous system speeds up all body processes except ___, which it slows
Digestion
“morphine within”; natural, opioid-like neurotransmitters -linked to pain control and to pleasure
Endorphins
What type of neuron carries messages from the body's tissues and sensory receptors inward?
Sensory neurons (or afferent)
the complete instructions for making an organism
Genome
the body’s “slow” chemical communication system; a set of glands and fat tissue that secrete hormones into the bloodstream
Endocrine system
You’re running and your eyes dilate. This is the system that engages to account for fight/flight
Sympathetic nervous system
What type of drug is LSD
Hallucinogen
What are two of the three main functions of Glial Cells
support, nourish, and protect neurons
What are eggs that are fertilized separately called
Dizygotic
The category of drugs that depress central nervous system activity, reducing anxiety but impairing memory and judgment
Barbiturates
These process info in the CNS between sensory inputs and motor outputs
Interneurons
Myasthenia gravis occurs in the neuromuscular junction when the immune system produces antibodies that block or destroy the receptors for this neurotransmitter
acetycholine