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43 Cards in this Set
- Front
- Back
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Central Nervous system |
Made up of Brain and Spinal Cord |
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Peripheral Nervous System |
Made up of Somatic Nervous System and Autonomic Nervous |
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Intrinsic neurons of CNS |
Somata and processes all in CNS |
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Extrinsic neurons of CNS |
Somata in CNS, distal axons in PNS
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Somatic NS of Peripheral NS (IN) |
sensory receptors; sensory neurons (afferent) |
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Somatic NS of Peripheral NS (OUT) |
Motor neuron fibers (efferent) |
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Sympathetic Autonomic NS of Peripheral NS |
"Flight or Fight" responses |
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Parasympathetic Autonomic NS |
(Body viscera) Calms, reduces activity, but also stimulates digestion |
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Number of Spinal Nerves ...cervical ...thoracic ...lumbar ...sacral ...coccygeal ...per side |
8 cervical 12 thoracic 5 lumbar 5 sacral 1 coccygeal 31 per side |
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Proprioception |
Knowledge of position and movemeent of muscles and skeleton (body sense) |
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1. Fascilulus gracilis |
Concious touch sensations from lower body. Carries Proprioceptive information |
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2. Fasciculus cuneatus (dorsal column) |
Conscious touch sensations from upper body. Carries proprioceptive information |
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3. Dorsal root |
Sensory signals into spinal cord. |
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4. Dorsal root ganglion |
contains all unipolar cells that form special receptor endings in periphery |
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5. Location of motor neurons |
N/A |
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6. Central Canal |
Contains cerebrospinal fluid |
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7. Lateral cortico-spinal tract |
Voluntary movements |
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8. Rubro-spinal tract |
Posture control. |
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9. Lateral spino-thalamic tract |
pain and temperature |
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10. Ventral root |
Carries motor axons with signals to muscles |
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11. Spinal nerve |
one of 30 pairs; contains both sensor and motor fibers |
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12. Spino-cerebellar tract |
Non conscious information form skin, muscle, and tendons via spinal circuits to cerebellum (muscle contraction) |
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Brain is required for spinal reflexes in vertebrates (T/F) |
False af |
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Renshaw cell |
"burst-shaping circuit" |
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Glycergic synapses can be blocked with ... |
strychnine |
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Major Subdivisions of Mammalian Brain |
-Forebrain -MidBrain -Hindbrain |
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Subdivisions of Forebrain |
-Telencephalon -Diencephalon |
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Subdivision of Midbrain |
-Mesencephalon |
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Subdivision of Hindbrain |
-Metencephalon -Myelencephalon |
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Subdivision of Telencephalon |
-Pallium (cortex & fibers) -Basal Nuclei -Rhinencephalon |
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Subdivision of Diencephalon |
-Thalamus -Hypothalamus |
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Subdivision of Mesencephalon |
Tectum |
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Subdivision of Metencephalon |
-Pons -Cerebellum |
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Subdivision of Myelencephalon |
Medulla |
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Function of Pallium (cortex & fibers) |
-Higher functions -Abstraction -Planning |
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Function of Basal Nuclei |
-Learned motor patterns |
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Function of Rhinencephalon |
-Olfaction - 1/2 of limbic system -hippocampus (memory organization) |
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Function of Thalamus |
Pre-cortical processing center for all sensory input BUT olefaction |
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Function of Hypothalamus |
-Core temperature regulation -Ionic homeostasis -Control of pituitary with pleasure and displeasure centers -hunger, thirst |
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Function of Tectum |
-reflex visual and conscious auditory processing -cranial nerve nuclei -reticular formation -red nucleus substantia nigra |
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Function of Pons |
-Cranial nerve nuclei -Respiratory centers -Reticular formation |
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Function of Cerebellum |
Subconscious muscle coordination. Compares intent of basal nuclei with performance of body and makes subconscious corrections. |
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Function of Medulla |
-Cranial nerve nuclei -Cardiac accelerator centers -Centers fro vasomotor centers -Vomiting -Coughing, salivation -Reticular formation |
