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14 Cards in this Set
- Front
- Back
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Nervous Tissue |
Made up of neurons and glial cells
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CNS |
Central Nervous system Brain and spinal cord
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PNS |
Peripheral Nervous system Cranial nerves, ganglia and spinal nerves
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General Functions |
1. Collecting information-sensory input
2. Processing and evaluating information.
3. Responding to information-effectors |
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Functional divisions of nervous system |
Sensory Nervous system and Motor Nervous system |
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Sensory Nervous System |
*Contains Receptors *Transmits info from receptors to CNS- Afferent ("inflowing", nerve impulses are transmitted to CNS) |
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Component of Sensory Nervous System: Somatic Sensory |
1. Somatic Sensory *General Senses-touch, pain, pressure,vibration. *Special Senses-taste, vision, hearing, smell. *Conscious Awareness-Voluntary.
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Component of Sensory Nervous System: Visceral Sensory
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2. Visceral Sensory *Transmits nerve impulses from blood vessels and viscera to the CNS. *Temperature and stretch (of muscles of organ walls) *Involuntary |
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Motor Nervous System |
*Transmits information from CNS to Muscles and glands (Efferent-"conducting outwards", nerve impulses transmitted from CNS) *Output
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Components of Motor Nervous System Somatic Motor |
Somatic Motor (Somatic Nervous System) *Impulses from CNS to skeletal muscles *Voluntary
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Components of Nervous system Autonomic Motor |
Autonomic Motor(Autonomic Nervous System) *Innervates internal organs and regulates smooth muscle, cardiac muscle and glands. *Involuntary |
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Cytology of Nervous Tissue
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2 cells: Neurons-excitable cells glial cells-support and protect neurons |
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Cytology-Neurons |
*Conduct impulses *High metabolic rate (need continuous glucose and oxygen) *Extreme Longetivity *Non-mitotic |
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Neuron Structure |
neuron |
