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22 Cards in this Set
- Front
- Back
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Sympathetic autonomic nervous system
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All over the body, "flight or fight".
Postganglionic fibers are longer |
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Parasympathetic
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not present in the limbs.
Forcibly brings body back to homeostasis Preganglionic fibers are longer because ganglia are close to their structures |
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Where and from which system do preganglionic cell bodies originate?
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Sympathetic preganglionic cell bodies originate in later horn from T1-L2.
Parasympathetic preganglionic cell bodies are found in brainstem and in S2-S4 |
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Nerves with nuclei in Medulla
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Trigeminal, vestibulocochlear, glossopharyngeal, vagus, accessory, and hypoglossal
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Nerves with nuclei in Pons
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Trigeminal, abducent, facial
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Nerves with nuclei in Midbrain
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Oculomotor, trochlear, trigeminal
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Functions of cerebellum
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Coordination of musculature
Regulation of muscular tension for posture and smooth muscle function Muscle activity and proprioception |
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Fxns of thalamus
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Main relay center for info from the perifphery to the CNS.
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Fxns of Hypothalamus
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Connections to limbic system, pituitary and brainstem
Control of various visceral fxns Involved in drives and emotional states, including feeding and drinking behavior, temp regulation, gut motility and sexual activity |
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Fxns of medial and lateral geniculate bodies
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Medial - auditory system
Lateral - visual system |
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Pineal body fxns
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Involved in sexual development and modulation of reproductive cycles
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Basal ganglia fxns
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Modulating muscle fxn, muscle coordination and memory.
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Free nerve endings
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Located throughout body, mainly in skin, mucous membranes, deep fascia, muscles and various visceral organs.
These nerve endings respond to pain, touch, pressure, and proprioception |
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Merkel's corpuscles (cells)
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Found in basal layer of epidermis of the skin.
Respond to touch and pressure |
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Meissner's corpuscles
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Found in dermis of skin adjacent to the epidermis.
Respond to vibration and touch |
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Pacinian corpuscles
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Found in deepest areas of dermis and hypodermis of skin and genitalia.
Primarily deep pressure and vibration receptors |
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Ruffini endings
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Found in dermis and connective tissue.
Some say pressure, other say they are thermoreceptors |
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Krause corpuscles
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Located in connective tissue of lips, tongue, and genitalia.
Pressure receptors |
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Neuromuscular spindles
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Found in all skeletal muscles
Stretch receptors |
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What are the dorsal columns and their functions?
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Fasiculus gracilis and fasiculus cuneatus
They include conscious proprioception, fine touch, vibratory sense and stereognosis |
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Functions associated with spinothalamic tract
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pain, crude touch, pressure and temperature
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Spinocerebellar tract functions
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Unconcious proprioception
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