Flashcards in Exam #3 ( Nervous System, Mental Health, Sensory Systems) Deck (47)
What do neurons do?
What do glia do?
Support and protect neurons, maintain ion balance
What are the three basic types of neurons?
What does the outer membrane of a neuron do?
Regulates the passage of ions in and out of the cell.
Define resting potential.
Neuron not transmitting signal; "at rest"
Define action potential.
Signal received, spreads to trigger zone.
How does an action potential move from one neuron to another?
Neurotransmitters (chemical signals) diffuse across a synapse (gap).
What structures constitute the central nervous system?
-The brain; Forebrain, midbrain, and midbrain.
-The spinal cord.
What structures constitute the peripheral nervous system?
Sensory input -> Integration -> Motor output
What are the primary functions of the sympathetic nervous system?
"Fight or Flight"
What are the primary functions of the parasympathetic nervous system?
"rest and digest"
What is the anatomy of a neuron?
-Dendrites, Cell body, Axon, Axon endings
Belief in someone or something that goes beyond the boundaries of self.
Define spiritual health.
Ability to identify one's purpose in life and achieve one's full potential.
How do you enhance spiritual health?
-Clarify your values
-Prayer or meditation
-Altruism: Helping or giving to others
Define Mental Disorder.
Pattern of behavior that is associated with distress or disability or with significantly increased risk of suffering, death, pain, disability or loss of freedom.
What causes mental illnesses?
Problems with communication between neurons in the brain (neurotransmitters)
What is the worlds most common mental disorder?
What is Bipolar Disease?
Alternation between major depression and abnormally elevated mood.
What is Anxiety Disorder?
Phobia: Irrational, persistent fear of objects and situations.
What is the most common childhood mental disorder?
What is Schizophrenia?
Profound impairment of sense of reality due to abnormal brain structure / chemicals
Nerve cells identify particular stimuli, depending on their type
Neurons carry signal to brain where it is decoded. The brain uses information about which nerve cells are involved, the frequency of impulses (action potentials), and number of neurons in order to identify the stimulus.
Pressure, position, or
Damage tissue (pain)