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37 Cards in this Set

  • Front
  • Back
Sympathetic Nervous System
division of autonomic nervous system that prepares the body for activity or to cope with a stressor "Fight or Flight"
Parasympathetic Nervous System
division of autonomic nervous system that oversees digestion, elimination, and glandular function, "Resting and Digesting"
Peripheral Nervous System
portion of system consisting of nerves and ganglia that lie outside the brain and spinal cord
Histamine
Promotes wakefulness in posterior hypothalamus
Acidosis
State of abnormally high hydrogen ion concentration in the extracellular fluid
Alkalosis
State of abnormally low hydrogen ion concentration in the extracellular fluid
Central Nervous System
Brain and Spinal Cord
Spinal Cord
Bundle of nervous tissue that runs from the brain to the 1st-3rd lumbar vertebrae and provides a conduction pathway to and from the brain
Pons
part of brainstem connecting the medulla with the midbrain, providing linkage between upper and lower levels of the CNS
Lobes of the Brain
Frontal
Cerebral
Parietal
Temporal
Occipital
Neurotransmitter
Chemical messenger released by neurons that may. upon binding to receptors of neurons or effector cells, stimulate or inhibit those neurons or effector cells
Synapse
Functional junction or point of close contact between two neurons or between a neuron and an effector cell
Neuron
cell of the nervous system specialized in generating or transmitting electrical signals (action and graded potentials)
Sleep Spindles Result From:
Blocking of information between the thalamus and cortex result from deactivation of the Reticular Activating System (RAS)
Reticular Thalamic Nuclei
promotes spindles and sleep preservation in the brain
Alertness is linked to:
Body Temperature
3 Things the Circadian Rhythm Influences
1) Body Temperature
2) Hormone levels
3) Potassium (K) levels
Serotonin
promotes wakefulness in ascending reticular activating system (RAS)
Internal Clock
Zeitgebers
Dorsal Raphe Nucleus Discharge
Slowly in NREM, absent in REM
Controls Circadian Rhythm
Superchiasmatic Nucleus (SCN)
Pontine Saccade Generators
Rapid Eye Movements
PGO
Pons
Occipital Cortex
Geniculate Nucleus of the Thalamus
Lateral Geniculate Nucleus
PGO waves
Cortex
Acetycholine
promotes wakefulness and REM (on cholinergic neurons)
4 Things PGO Triggers
1) Muscle Twitches
2) Eye Movements
3) Changes in respiration
4) Changes in HR
Gateway Structure Between Body and Cerebral Cortex
Thalamus
Seizures occur most in what area of the brain?
Temporal Lobe
Lateral Tegmenteoreticular Tract
responsible for muscle atonia
Part of brain when stimulated produces sleep onset
Nucleus Tractus Solitarius
Pineal Gland
Where melatonin is released
Effectors
Impulses sent via motor neurons to muscles
2 Medications that Facilitate GABA
Barbituates
Benzodiazepines
Caffeine Blocks in the Anterior Hypothalamus:
adenosine receptors
The Anterior Hypothalamus Secretes
GABA
5 Anatomical Sites that Control NREM Sleep (BRAND)
1) Basal Forebrain Area
2) Reticular Thalamic Nuclei
3) Anterior Hypothalamus
4) Nucleus Tractus Solitarius
5) Dorsal Raphe Nucleus
Generator of Wakefulness
Ascending reticular activation system