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- Originate in the midbrain and extends into all brain regions, particularly the hypothalamus
- Also present in the blood Platelets and the lining of the digestive tract
- Regulates state of consciousness, mood, depression, and anxiety. It affects basic bodily functions such as appetite, sleep,and sexual behavior.
- May contribute to aggression and schizophrenia.
Is present in the three nerve tracts that have different functions
- - Transmitter located in the sympathetic nerves of the peripheral and central nervous systems.
- -Is secreted by the adrenal glands in response to stress or arousal
Psychotropic drugs are attributed to?
- 1. Acetylcholine - not on test
- 2. norepinephrine
- 3. Dopamine
- 4. Serotonin
- 5. Gamma (Gabba)
In charge of processing visual input
Receives sensory information from the body
- Affects gross motor skills and the integration of sensory input
- ex:hearing,perception,and storage of memory
- -Largest,govern personality, emotion,reasoning,learning, and speech.
- -Motor control
- -Decision making and purposeful behavior
- Surface of each hemisphere is an intricately folded layer of nerve cells.
- Behind the brain stem and receives information from the muscles, joints, balance, skin, the eyes, and ears
- - Controls bodily functions operating below the level of consciousness. ex: posture,balance, movement through space
- -memory of certain kinds of simple learned responses may be stored
- At the center of the brain stem and traveling it's full length is a core of neutral tissue
- - controls the position and tension of muscles
- -Hind brain
- -located just under the midbrain
- -links the various areas of the brain with each other and the central nervous systems
- - controls coordinated movements
- -involved in language and thinking
- -links the brain to the spinal cord
- -maintence of the unconscious life support functions
- - Medulla oblongata
- -regulates vital functions - arousal, heartbeat,respiration, blood flow, muscle tone, movement of stomach, and intestines.
3 sections of the brain
- - Hind brain
- -Mid brain
- -Fore Brain
A serious of interconnecting neurons working together for some coordinated purpose
-The study of drugs that affect a person's thinking, emotions, and behaviors
- - Connects the cerebral cortex and the other parts of the brain.
- When unintentionally affected by certain psychotropic medications adverse side effects happen
- -Located near the center of the Forebrain
- -relays sensory information from the body to the brain
- -Helps initiate consciousness and make preliminary classifications of external information
- - involved in learning
- -memory - helps convert information short term to long memory
- - involved in memory
- -emotional responses
- - switching station for sensory information
- -involved in memory
- - produced by the hypothalamus
- -influence motivation, sexual arousal, eating and drinking, sleeping, waking, certain chemical balances, and emotions important to survival.
Consists of brain stem, cerebellum, and pons
- Largest section of the brain
- Consists of many specialized areas
- - involved in emotion and homeostasis
- -regulates body temperature, blood pressure, heart rate, and blood sugar levels.
- - limbic system
- - relay station for internal regulatory systems
- -monitoring information coming from the autonomic nervous systems
- - influencing the body's behavior through pathway
- -produces neurohormones
- - monitors and integrates various sensory functions
- - serves as a center of visual and auditory stimulation
- -on the upper surface of the midbrain, collections of cells relay specific information from sense organs to higher levels of the brain.
- Is a membrane of the cell body, or dendrite, on which receptor sites are located
- - the receiving area of the synapse on the dendrite of the nerby cell body.
- an axon nerve cell ending containing neurotransmitters that extend to the synopse
- - central area of the neuron
- -metabolic center
- -lipid (fatty) material, the cell membrane separates the contents of the cell from the fluid enveloping it.
- - Process by which a neurotransmitter crosses the snypatic cleft and attached to a receptor in the postsynaptic membrane which activates chemical changes in the postsynaptic membrane
- - can encourage or discourage the production of nerve impulses
How do drugs work?
- - by modifying natural events in the synapses along pathways in certain areas of the brain
- 1. altering presynaptic activity to prompt neurotransmitter release
- 2.altering post synaptic activity to affect receptor binding
- 3.interfering with normal reuptake process
- 4.altering the manufacture of receptors
-After transmission is complete the neurotransmitter is either discarded as waste by the grial cells or enters the presynpatic terminal for storage and use at another time