All information collected by human senses is passed through a net like group of cells known asOa) Reticular Activating system (RAS)Ob) Sensary Activating system (SAS)Oc) Both (a) & (b)d) None of these
Answers
Answer:
i think the answer is b) sensory activating system but i am not sure
Explanatiion:
Answer:
The reticular activating system (RAS) is a component of the reticular formation in vertebrate brains located throughout the brainstem. Between the brainstem and the cortex, multiple neuronal circuits ultimately contribute to the RAS.[1] These circuits function to allow the brain to modulate between slow sleep rhythms and fast sleep rhythms, as seen on EEG. By doing this, the nuclei that form the RAS play a significant role in coordinating both the sleep-wake cycle and wakefulness. The groupings of neurons that together make up the RAS are ultimately responsible for attention, arousal, modulation of muscle tone, and the ability to focus.[2]
Structure and Function
The RAS is a component of the reticular formation, found in the anterior-most segment of the brainstem. The reticular formation receives input from the spinal cord, sensory pathways, thalamus, and cortex and has efferent connections throughout the nervous system. The RAS itself is primarily composed of four main components that each contain groupings of nuclei. These are the locus coeruleus, raphe nuclei, posterior tuberomammillary hypothalamus, and pedunculopontine tegmentum. Each is unique in the neuropeptides they release. In large part, these centers are activated by the lateral hypothalamus (LH), which releases the neuropeptide orexin in response to the light hitting the eyes, which then stimulates arousal and the transition from sleep to waking.[3]
The locus coeruleus is located within the upper dorsolateral