GENERAL HISTOLOGY

Detailed explanation-1: -The autonomic nervous system has visceral sensory neurons which are responsible for monitoring the internal environment and eliciting appropriate changes in effector organs to maintain homeostasis.

Detailed explanation-2: -Sensory receptors detect changes in the internal as well as external environment. Sensory receptors comprise specialised cells close to neurons or neuron endings, which are a part of the afferent neurons and send signals to the central nervous system and brain for processing and integration.

Detailed explanation-3: -) General visceral afferent receptors are found in organs of the thorax, abdomen, and pelvis; their fibres convey, for example, pain information from the digestive tract. Both types of afferent fibre project centrally from cell bodies in dorsal-root ganglia.

Detailed explanation-4: -Many sensations are generated and transmitted via specialized sensory organs, others, as viscera, contain nociceptors that activate following inflammation and tissue damage. The sensory organ of the eye is the retina.