GENERAL ANATOMY
NERVOUS SYSTEM
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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a neurotransmitter travels through the nerves from the brain to the spinal cord.
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a change in temperature travels through the nerves from an organ to the brain.
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a stimulated receptor sends a signal through the nerves to the brain.
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a neuron in the brain sends a signal through the nerves to a muscle.
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Detailed explanation-1: -Sensory neurons are specialized to detect stimuli from the environment, such as light, sound, taste, or pressure. Detection of a stimulus triggers the sensory neuron to transmit a message to the central nervous system.
Detailed explanation-2: -Thalamus: The thalamus is the relay center of the brain. It receives afferent impulses from sensory receptors located throughout the body and processes the information for distribution to the appropriate cortical area.
Detailed explanation-3: -neurons carry information from the receptors to the brain.
Detailed explanation-4: -Two mechanisms have evolved to transmit nerve signals. First, within cells, electrical signals are conveyed along the cell membrane. Second, for communication between cells, the electrical signals generally are converted into chemical signals conveyed by small messenger molecules called neurotransmitters.
Detailed explanation-5: -Sensations begin as signals generated by touch receptors in your skin. They travel along sensory nerves made up of bundled fibers that connect to neurons in the spinal cord. Then signals move to the thalamus, which relays information to the rest of the brain.