![]() Nerve cells send a signal from the sensory receptors to the CNS. Receptors are connected to effectors as follows: Sensory receptorsĭetect the changes in the environment (stimuli). For example: a gland releasing hormone in the blood, contraction of muscle to move an arm. Effectors include muscles and glands, and responses can include muscle contractions or hormone release. It also helps in relaying sensory and motor signals to the cerebral cortex.Įffectors: Bring about responses and restore optimum levels. Diencephalon helps in regulating consciousness, alertness, and sleep. ![]() The thalamus is where sensory and other impulses go and combine.
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