Physiological Psych & Psychopharmacology Flashcards
The 2 types of cells in the nervous system
Glial Cells and Neurons
What are the parts of a neuron
Dendrites, cell body/soma, axon
What is the space between the axon and receptor
Synapse
what part of the neuron transmits info to the post synaptic cells?
Axon
What is the myelin sheath made of
glial cells
What is multiple sclerosis
destruction of the myelin sheath and a malfunctioning immune system that destroys the myelin; sxs include impaired vision, pain, fatigue, impaired coordination, slurred speech, tremor
Chemicals that transfer info from the presynaptic neuron to the post synaptic neuron
Neurotransmitters
Increases the likelihood that action potential will occur in the post synaptic cell
Excitatory effect of a neurotransmitter
Decreases the likelihood that action potential will occur in the post synaptic cell
Inhibitory effect of a neurotransmitter
The electrical impulse that travels the length of a cell and responsible for the release of a neurotransmitter into the synapse
action potential
All or Nothing responses that either occur or don’t occur when a neuron gets sufficient stimulation from the presynaptic neuron
Action potential
Mimic or increase effects of a neurotransmitter at receptors
Agonist
Produce effects similar to (but weaker than) the effects of agonist or neurotransmitter at receptors
Partial Agonists
Bind to the same receptors as a neurotransmitter or agonist, but produce effects that are opposite of a neurotransmitter or agonists
Inverse Agonist
Produce no effects on their own but block or reduce the effects of a neurotransmitter or agonist at the receptor
Antagonists
The Central Nervous System is made up of
The brain and spinal cord
The brain is divided into what 3 parts
forebrain, midbrain, hindbrain
This is the most primitive part of the brain
Hindbrain; contains medulla, pons, and cerebellum
Most complex & largest part of the brain
Forebrain; contains cortical and subcortical structure
Consists of sensory and motor neurons that are located outside of the central nervous system
Peripheral Nervous System
What is divided into the somatic and autonomic nervous systems?
Peripheral Nervous System
Transmits info from body’s sensory receptors to the central nervous system and from the central nervous system to the skeletal muscles; Responsible for voluntary actions
Somatic Nervous System
Responsible for actions that tend to be involuntary; transmits info between the central nervous system and smooth muscles of the organs and glands
Autonomic Nervous System
This consists of the sympathetic and parasympathetic branches
Autonomic Nervous System