BIOLOGICAL BASES OF BEHAVIOR Flashcards
SENSE RECEPTORS
- detects heat, light or touch
- pass info. to brain
NEURONS
pathway of communication from sensory receptors to brain and vice versa
SENSORY NEURONS
- AFFERENT neurons
- take information from BODY to spinal cord & brain
MOTOR NEURONS
- EFFERENT
- info. from BRAIN TO BODY
INTERNEURONS
- ASSOCIATION NEURONS
- neurons that communicate with other neurons
ACTION POTENTIAL
- electrical signal that is chemically generated
SYNAPTIC GAP
- what ?
- what kind of signal?
gap between neurons
-communication via NEUROTRANSMITTERS
NEUROTRANSMITTERS
chemical molecules contained in vesicles within the axon terminal
-released in the synaptic cleft
enzymatic degradation
-breaking down of excess neurotransmitter
REUPTAKE
-re-absorption of excess neurotransmitter
SEROTONIN
-controls AROUSAL and SLEEP
DECREASE leads to DEPRESSION
AGONIST
positive
1) MIMIC neurotransmitter
2) INHIBIT RE-UPTAKE of neurotransmitter
PROZAC
AGONIST drug
- inhibits re-uptake of serotonin
- helps with depression
ANTAGONIST
negative
drugs that 1) BLOCK activation sites
2) inhibits release of neurotransmitter
CENTRAL NERVOUS SYSTEM
includes the BRAIN and SPINAL CORD
PERIPHERAL NERVOUS SYSTEM
- what?
- two ways?
includes the SENSORY AND MOTOR NEURONS that connect the brain and spinal cord to the rest of the body
AUTONOMIC and SOMATIC
AUTONOMIC NERVOUS SYSTEM
-two types
automatic regulation of internal organs and glands
- SYMPATHETIC and PARASYMPATHETIC NS
SOMATIC NERVOUS SYSTEM
controlling voluntary skeletal muscle movement
SYMPATHETIC NERVOUS SYSTEM
FIGHT OR FLIGHT
PARASYMPATHETIC NERVOUS SYSTEM
REST AND DIGEST
NEURAL NETWORKS
groups of neurons that serve similar functions
BRAINSTEM
controls HEARTBEAT AND BREATHING
THALAMUS
-relay information received from sensory neurons to higher brain regions
RETICULAR FORMATION
CONTROLS AROUSAL AND SLEEP
-FILTERS incoming stimuli and send it to other parts of the brain
