Visceral Sensory Afferent
Visceral sensory (general visceral afferent). Convey sensory information from the viscera, including glands, the gastrointestinal tract, trachea, bronchi, lungs, blood vessels and heart, as well as the carotid body and sinus. Visceral sensory neurons course within CN IX and CN X. Sensory input not perceived consciously
Visceral sensations relayed are hunger, nausea, and visceral pain.
From the Abdomen
The visceral affferent pathway is in red.
The signal continues along the dorsal root from the dorsa (posterior)l root ganglion to a region of gray matter in the dorsal horn of the spinal column where it is transmitted via a synapse to a neuron in the thalamus. From the thalamus it goes to the cortex.
Pelvis
The course of GVA fibers from organs in the pelvis, in general, depends on the organ's position relative to the pelvic pain line. An organ, or part of an organ, in the pelvis is said to be "above the pelvic pain line" if it is in contact with the peritoneum, except in the case of the large intestine, where the pelvic pain line is said to be located in the middle of the sigmoid colon.[6] GVA fibers from structures above the pain line follow the course of the sympathetic efferent fibers, and GVA fibers from structures below the pain line follow the course of the parasympathetic efferents.[6] Pain from the latter fibers is less likely to be consciously experienced.[6]
Afferents fibers pahway is in black.