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Nervous System, Kayla Cortez, Period 1 (Cranial Nerves (Abduncens Nerve,…
Nervous System, Kayla Cortez, Period 1
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Major Nerves of the Body
Sensory Nerves
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Collects information on pain, temperature, and pressure.
Autonomic Nerves
regulates the activity of heart muscle, smooth muscle, and glands.
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Cranial Nerves
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Essential in vision, smell and eve/facial movements
Spinal Nerves: Carries motor, sensory, and autonomic signals between the spinal cord and the body.
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Divisions of the PNS of the body (sensory, motor, somatic, etc.)
Motor (efferent) Nerves
Carry impulses from CNS organs, muuscles
Somatic Motor Nerves
Conscious voluntary control, sense, and respond to external environment
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Autonomic Motor Nerves
Autonomic, unconscious involuntary control and respond to internal environment
Action Potential
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Na+ channels open, allowing Na+ entry
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Na+ channels are inactivating. K+ channels open, allowing K+ to exit.
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Some K+ channels remain open, and Na+ channels reset .
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