Idk Early Stuff Flashcards
Receives messages and gives them to the cell body
Dendrite
“Life center” of neuron. Holds impulse before threshold is met.
Cell Body
Axon
Passes messages from cell body to other neurons
Myelin Sheeth
Protects Axon and speeds up impulse
Terminal branches
Form junctions with other neurons
Cerebral cortex
Covers the hemispheres
The lobe of the brain is responsible for decision making, judgement, cause and effect, and personality
Frontal lobe
Parietal lobe
Focusses on touch sensation
This lobe of the brain focusses on auditory function
Temporal lobe
Occipital lobe
Located in back of brain, focusses on vision
Phineas gage
Spike went through head, resulted in personality change
Brain stem
Oldest and innermost region of the brain
Medulla
Swelling on brain stem, controls heartbeat and breathing
Reticular formation
Network of neurons inside the brain stem that connects to the spinal cord
Thalamus
Brains switchboard, takes information from the senses (not smell) and sends it to appropriate region
Cerebellum
Two wrinkled halves, enables voluntary & involuntary movement
Limbic system
The limbic system is the part of the brain involved in our behavioural and emotional responses, especially when it comes to behaviours we need for survival: feeding, reproduction and caring for our young, and fight or flight responses.
Contains thalamus, hypothalamus, frontal lobe, olfactory bulb, amygdala, hippocampus
Hypothalamus
Homeostasis , governs maintenance, deals with four f’s fight flight food fornication, rewards for doing necessary bodily functions
Lateral Hypothalamus
Stimulates hunger
Ventromedial hypothalamus
Decreases hunger “full feeling”
Amygdala
Modulates fear and aggressive
Hippocampus
Modulates memory function
Dopamine
Excitatory, influenced movement, learning, attention, and emotion. Reward
Acetylcholine
Enables muscle, action, learning, and memory, excitatory
Serotonin
Inhibitory. Mood stabilizer, hunger, sleep, arousal
No epinephrine
Helps control alertness and arousal
GABA
Major inhibitory
Glutamate
A major excitatory
Central Nervous System
Brain And spinal cord
Peripheral nervous system
All of the nervous system excluding the brain and spinal cord
Autonomic Nervous System
Part of peripheral ns. Communicates with internal organs and glands
Somatic ns
Communicates with sense and organs and voluntary musicles
