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Impulses are sent from the brain to the effector organs along what neurones?
Impulses are sent from the brain to the effector organs along motor neurons. These motor neurons are part of the peripheral nervous system and carry signals from the central nervous system to muscles and glands, allowing for coordinated movement and responses.
List the cellular structures over which an impulse would pass?
In the body, an electrical impulse travels through the neurons, or nerve cells, to send signals to and from the brain. The Dendrites of the neuron accept the impulse, send it through the soma, down the axon, and to the axon terminal, where it'll be sent to the next neuron, almost instantly.
When the receptor have registered a the energy is converted to a electrochemical impulse?
Yes, when a receptor detects a stimulus, it triggers an electrochemical impulse to be sent along a nerve cell. This impulse travels to the brain where it is interpreted as a specific sensation or perception.
What occurs at the synapes when a nerve impluse arrives?
When a nerve impulse arrives at a synapse, it triggers the release of neurotransmitters from the presynaptic neuron into the synaptic cleft. These neurotransmitters then bind to receptor sites on the postsynaptic neuron, causing a change in its membrane potential. This change can either excite or inhibit the postsynaptic neuron, influencing whether an action potential is generated.
If all the nerve impulses are same then why their response is different?
Although nerve impulses are electrical signals that travel along nerves in the same way, the specific response can differ based on the type of nerve fiber involved, where the impulse is being sent, and the neurotransmitters released. Different nerve fibers may lead to different responses in the body due to variations in the pathways and connections in the nervous system. Additionally, the specific receptors and effector organs that the nerve impulses target can also influence the response.
Does brain have nerve?
The nervous system is made up of three parts: the receptor, the decider, and the effector. The receptor receives an stimulus and creates an electric impulse to be sent to the brain. The brain receives this impulse and decides what to do in order to react to the stimulus. Your brain then makes a decision and sends out an electric impulse to the effector which moves the muscle or activates a gland in your body which is a reaction to the stimulus.
How does effector relate to reflex arc?
An effector is a part of the body (such as a muscle or gland) that carries out the response in a reflex arc. In a reflex arc, when a stimulus is detected by a sensory receptor, a message is sent via a sensory neuron to the spinal cord, where it is processed, and then a message is sent via a motor neuron to the effector causing a response.
Describe the path an impulse would take for a reflex reaction?
When a sensory receptor detects a stimulus, an impulse is transmitted via a sensory neuron to the spinal cord. In the spinal cord, the impulse is processed and a response is generated, which is then sent via a motor neuron to the effector (muscle or gland) to carry out the reflex reaction. This entire pathway occurs rapidly and automatically without involvement of the brain.
Impulses are sent from the brain to the effector organs along what neurones?
Impulses are sent from the brain to the effector organs along motor neurons. These motor neurons are part of the peripheral nervous system and carry signals from the central nervous system to muscles and glands, allowing for coordinated movement and responses.
What is the function of the cell body?
The cell body (soma) of a neuron contains the nucleus and organelles responsible for the cell's metabolic functions, such as protein synthesis and energy production. It integrates incoming signals from dendrites and generates nerve impulses that are transmitted down the axon to communicate with other neurons or effector cells.
What part of the body controls the vomiting impulse?
The vomiting impulse is controlled by the brain stem, specifically the vomiting center located in the medulla oblongata. Signals from various parts of the body, such as the stomach, intestines, and vestibular system, are sent to the brain stem to trigger the vomiting reflex.
List the cellular structures over which an impulse would pass?
In the body, an electrical impulse travels through the neurons, or nerve cells, to send signals to and from the brain. The Dendrites of the neuron accept the impulse, send it through the soma, down the axon, and to the axon terminal, where it'll be sent to the next neuron, almost instantly.
When the receptor have registered a the energy is converted to a electrochemical impulse?
Yes, when a receptor detects a stimulus, it triggers an electrochemical impulse to be sent along a nerve cell. This impulse travels to the brain where it is interpreted as a specific sensation or perception.
How does human body regulates body temperature?
The body regulates temperature through a physiologic process called negative feedback mechanism. It involves the skin(which has a thermosensitive receptor) sending an impulse or message to the hypothalamus in the brain. The hypothalamus then send an impulse to the different body parts. For example, in a cold weather the blood vessels constrict, behavioural changes occur i.e covering self with a blanket, closing nearby windows and doors e.t.c. When all these occur and the body temperature is back to normal, an impulse is sent again to the hypothalamus that the temperature has been regulated. Then, again the hypothalamus inhibits the process.
What occurs at the synapes when a nerve impluse arrives?
When a nerve impulse arrives at a synapse, it triggers the release of neurotransmitters from the presynaptic neuron into the synaptic cleft. These neurotransmitters then bind to receptor sites on the postsynaptic neuron, causing a change in its membrane potential. This change can either excite or inhibit the postsynaptic neuron, influencing whether an action potential is generated.
If all the nerve impulses are same then why their response is different?
Although nerve impulses are electrical signals that travel along nerves in the same way, the specific response can differ based on the type of nerve fiber involved, where the impulse is being sent, and the neurotransmitters released. Different nerve fibers may lead to different responses in the body due to variations in the pathways and connections in the nervous system. Additionally, the specific receptors and effector organs that the nerve impulses target can also influence the response.
How does the four major elements of a simple nervous pathway function during pain withdrawal reflex?
During a pain withdrawal reflex impulses are sent through different nerves and to the spinal cord. This reflex does not make it to the brain but only to the spinal cord. We call this involuntary action because we dont control reflexes. The sensory neurons are the first to recieve the impulse, then they travel to the interneurons, or associative neurons, and then they go to the motor neurons which carries the impulse to the central nervous system. Then the effector is the response, so in this case your musscle will contract.
