Nervous System Flashcards
Central Nervous System
Brain
Spinal cord
Peripheral Nervous Systen
Cranial nerves
Spinal nerves
Sensory nerves
Messages toward brain; afferent
Motor Nerves
From the brain; efferent
Automatic Nervous System
Nervous system to organs; sympathetic and parasympathetic
Sympathetic
Fight or flight
Parasympathetic
Nerve balance
Neuron
Electrical impulse
Parts of a Neuron
- Dendrites- tree/branching
- Cell body
- Nucleus
- Axon- cord-like
- Myelin sheath (wraps around axon)
- Terminal end fibers
- Synapse (neurotransmitters: dopamine, epinephrine, serotonin)
Glia Cells
Maintain health of nervous system; 4 types of
Astrocytes
BBB; protect brain from harmful substances
Microglia
Protect neurons when’s there’s inflammation
Oligdendroglia
Protect dendrites and sheath
Ependymal
Ependym/o- wrapping
Frontal lobe
Thought process, behavior, personality, and emotion
Parietal
Sensations, vision, spatial perception
Occipital
Vision
Temporal
Hearing, understanding, speech/language
Gyri
Folds in the brain
Sulci
Deep grooves
Corpus callosum
Holds hemispheres together
CSF
Cerebral spinal fluid
Meninges
Viral, bacterial, fungal (meningitis)
Cerebellum
Voluntary movement and balance
Thalamus
Consciousness, learning, and memory. Information station.
Hypothalamus
Below thalamus
Body temp., sleep, appetite, sex, and emotion
Regulates hormones
Monitors sympathetic and parasympathetic
Pons (bridge)
Houses nerves for face and eyes
Midbrain
Top
Medulla oblongata
Connects spinal cord to brain, regulates blood vessels, heart, respiratory, and emesis
Myelin
Fatty insulation for nerve cells