Explain how a simple reflex works o rapid motor responses to a stimulus and

Explain how a simple reflex works o rapid motor

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Explain how a simple reflex works. Differentiate between the following: sensory and motor neurons;
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skeletal muscle effectors o Automatic Nervous System unconscious/involuntary control, some internal reflexes uses 2 neurons to reach effector (pre and postganglionic) little to no myelin on axons stimulatory or inhibitory effect on effectors cardiac and smooth muscles and glands are effectors o Sympathetic Division stressful situations, “fight or flight” stimulates the body and uses lots of energy nerves originate in the middle portion of the spinal cord long postganglionic neurons sympathetic ganglia located just outside of spinal cord o Parasympathetic Division “rest and response” or “rest and digest” keeps body energy use as low as possible most nerves originate in the brain stem or sacral regions of spinal cord long preganglionic neurons ganglia located near the effector organ Describe some ways the nervous system maintains homeostasis of an animal. o Integumentary System receptors detect temperature changes ANS regulates sweat glands and blood vessels to dissipate or conserve heat o Muscular System skeletal muscles can be stimulated to shiver to generate heat o Cardiovascular system ANS monitors blood pressure, heat-rate and even blood volume o Respiratory System nervous system regulates breathing depth and rhythm while also monitoring O2 and pH levels Lesson 09: Communication via Neurons
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  • Spring '11
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