The chemoreceptors aka our taste buds.
Science
Visceral Sensory Neurons and Referred Pain
Overview of visceral sensory neurons and a map of referred pain
The Autonomic Nervous System
The sympathetic, parasympathetic divisions, their functional differences and the adrenal medulla.
Innervation of the skin: Dermatomes
Map of the dermatomes.
Peripheral Nervous System: Spinal Nerves and Plexuses
Looking at the 31 pairs of spinal nerves including the cervical, brachial, lumbar, and sacral plexuses in detail.
Peripheral Nervous System: Cranial Nerves
Basic structural components of the PNS, four divisions, and cranial nerves.
Disorders of the Central Nervous System
The various spinal cord damage disorders…
Protection for the Brain: Meninges, CSF, Blood-Brain Barrier
All the layers covering the brain and the CSF
The Limbic System and the Reticular Formation
Anatomy of the limbic system (emotional brain), reward system, and reticular formation.
Cerebral White Matter and Gray Matter and Basal Ganglia
Anatomy of the Cerebral White Matter and Gray Matter and Basal Ganglia.