BIOLOGICAL BASES OF BEHAVIOR
BIOLOGICAL PSYCHOLOGY
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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carry messages from the CNS along nerves in the PNS to effectors in the body (muscles & glands)
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they carry messages through the body to the bones
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they have long dendrites and short axons
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they have short dendrites and long axons
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Detailed explanation-1: -Efferent, or motor, neurons transmit impulses from the CNS to effector organs such as muscles and glands. Efferent neurons usually have short dendrites and long axons.
Detailed explanation-2: -The cell bodies of some PNS neurons, such as the motor neurons that control skeletal muscle (the type of muscle found in your arm or leg), are located in the CNS. These motor neurons have long extensions (axons) that run from the CNS all the way to the muscles they connect with (innervate).
Detailed explanation-3: -Motor neurons have short dendrites and long axons. Their dendrites and cell body are in the spinal cord and their axons are found in the muscle, organ or gland that they innervate.
Detailed explanation-4: -Although there are billions of neurons and vast variations, neurons can be classified into three basic groups depending on their function: sensory neurons (long dendrites and short axons), motor neurons (short dendrites and long axons) and relay neurons (short dendrites and short or long axons).
Detailed explanation-5: -Motor neurons have the most common type of ‘body plan’ for a nerve cell-they are multipolar, each with one axon and several dendrites.