The nervous system is divided into two parts which are the Central Nervous System and the Peripheral Nervous System.
Nerve impulses are transmitted by neurons which are; sensory neurons that carry information to the CNS(Central Nervous System) ,interneurons that relay information between neurons and motor neurons that carry information to the effector that produces responses.The reflex arch is a response to a stimulus through a simple pathway. It consists of a receptor, sensory neuron, and an effector. An example of a reflex arch would be to reflexively pull your hand away from a hot object which happens so quickly without any thinking.
Since the nervous system does not store nutrients, it must receive a continuous supply from blood. Any interruption to the flow of blood may bring brain damage or death. The nervous system maintains homeostasis by controlling and regulating the other parts of the body.A deviation from a normal set point acts as a stimulus to a receptor, which sends nerve impulses to a regulating center in the brain. The brain directs an effector to act in such a way that an adaptive response takes place. If, for example, the deviation was a lowering of body temperature, the effector acts to increase body temperature. The adaptive response returns the body to a state of normalcy and the receptor, the regulating center, and the effector temporarily cease their activities. Since the effector is regulated by the very conditions it produced, this process is called control by negative feedback.The amount of neurotransmitter produced and broken down is normally monitored to maintain homeostasis (9).
Nerve impulses are transmitted by neurons which are; sensory neurons that carry information to the CNS(Central Nervous System) ,interneurons that relay information between neurons and motor neurons that carry information to the effector that produces responses.The reflex arch is a response to a stimulus through a simple pathway. It consists of a receptor, sensory neuron, and an effector. An example of a reflex arch would be to reflexively pull your hand away from a hot object which happens so quickly without any thinking.
Since the nervous system does not store nutrients, it must receive a continuous supply from blood. Any interruption to the flow of blood may bring brain damage or death. The nervous system maintains homeostasis by controlling and regulating the other parts of the body.A deviation from a normal set point acts as a stimulus to a receptor, which sends nerve impulses to a regulating center in the brain. The brain directs an effector to act in such a way that an adaptive response takes place. If, for example, the deviation was a lowering of body temperature, the effector acts to increase body temperature. The adaptive response returns the body to a state of normalcy and the receptor, the regulating center, and the effector temporarily cease their activities. Since the effector is regulated by the very conditions it produced, this process is called control by negative feedback.The amount of neurotransmitter produced and broken down is normally monitored to maintain homeostasis (9).