Chapter 2 - The Brain and Behavior Flashcards
collecting chemical information from nearby structures
Dendrites
information from dendrites is sent to the ____ and if/when it reaches a certain amount of chemical information, it wants to send a signal to another structure
Cell Body
signal is sent down a long tail
- conducts electrical impulses
Axon
axon is covered in ___
- fat blobs used as insulation
Myelin
chemicals will be released out into space and picked up by an adjacent/muscle/gland
Terminal Branches of Axon
houses all the organelles of the cell
Nucleus
channels/windows when ions can flow in or out of the axon through the cell membrane
Nucleus
exchange of sodium and potassium ions which allows a signal to be sent
Nucleus
chemicals released into the space between the axon and the adjacent structure
Synapse
- alzheimers disease (memory)
- agonist: nicotine (muscles, thoughts, behaviors)
- antagonist: botox
Acetylcholine (Neurotransmitter)
- parkisons disease (lose motor movements)
- agonist: schizophrenia (hallucinations, L-dopa)
- antagonist: antipsychotics
Dopamine (Neurotransmitter)
- depression
- agonist: prozac, zoloft (improve mood)
Serotonin (Neurotransmitter)
- anxiety
- agonist: valium, xanax (relaxation)
- antagonist: caffine
GABA (Neurotransmitter)
- depression (body’s natural pain reliver)
- agonist: opiate (addictive)
- narcan (overdoses)
Endorphins (Neurotransmitter)
- fight or flight response
- agonist: epipen
- antagonist: beta blocker (slows heart rate)
Epinephrine (Neurotransmitter)
- ability of your brain to recognize itself
- ex., injuries (stroke)
Neuroplasticity (Neurotransmitter)
brain and spinal cord (center of body)
Central Nervous System
all the nerves outside the central nervous system
Peripheral
motor neuron allows you to move your muscles and sensory neuron allows you to feel
- spinal nerves
Somatic (Peripheral)
all the nerves that are going into your organs
Autonomic (Peripheral)
- fight or flight response
- arousing
Sympathetic
- calming
- relaxing
Parasympathetic
pons, medulla, reticular activating system (RAS)
Brain Stem
- links your brain to your spinal cord
- handles unconscious movements (sleeping)
- coordinates facial nerves
Pons
controls breathing, heart rate, reflexes, and blood pressure
Medulla
regulates arousal and sleep-wake transitions
Reticular Activating System (RAS)
- responsible for motor control
- balance/coordination
Cerebellum
- all sensory information is gathered (except smell) and transfers information to the appropriate structures in the cerebral cortex (forebrain)
- plays a role in sleep, consciousness, wakefulness, learning, memory
Thalamus
older structure of the brain we share with mammels
- hypothalamus, amygdala, hippocampus
Limbic System
- keeps your body in a stable state
- body temp, appetite, eating, drinking, sex, emotions, stress
- controlling endoctrine system
Hypothalamus
- regulates emotions
- detecting threats in your environment (fear and aggression)
Amygdala
what allows you to form and keep memories
Hippocampus
all the cell bodies from the neurons (thinking and planning)
- left side: language, math, logic, ability to speak (controls motor movements on right side)
- right side: spacial relationships, music, emotions, recognizing faces (controls motor moments on left side)
Cerebral Cortex
coordinates with the thalamus and motor area to plan improvement
Basal Ganglia
- RAS
- role in sleep-wake cycle, arousal, and patterned movements
Reticular Formation
- back: motor cortex
- front: emotions, personality, and decision making
Frontal Lobe
- part of frontal lobe
- generate signals to direct motor movements (hands, fingers, and face are heavily represented)
Primary Motor Cortex
- part of frontal lobe
- cognitive reasoning (thoughts, actions, emotions)
Prefrontal Cortex
vision
- color determination
- object and face recognition
- memory formation
Occipital Lobe
sensory
- management of touch, taste, hearing, sight, smell
Parietal Lobe
- part of parietal lobe
- sense of touch on different parts of body (fingers and face are heavily represented)
Somatosensory Cortex
auditory information is processed
- managing emotions, processing information from your senses, storing and retrieving memories, and understanding language
Temporal Lobe
- part of temporal lobe
- hearing
Primary Auditory Cortex