Sensory pathway poopoo + Sympathetic and Parasympathetic (T-T)

Somatosensation

Sensory receptor → Nerves → Dorsal root ganglia → Spinal cord → Brainstem → Thalamus → Cerebral Cortex

Audition

Cochlea → Vestibulocochlear nerve → Brainstem → Inferior (Auditory understanding) / Superior colliculus (Spatial info with different senses) → Thalamus → Cerebral Cortex

Equilibrium

Semicircular canal → Vestibulocochlear Nerve → Vestibular nuclei → Muscles (Posture and balance) / Cerebellum (Motor Control) / Eye Muscles (Coordination of vision and head motion) / Thalamus → Cerebral Cortex

Vision

Eyes → Optic Nerve → Optic Chiasm (Splits left and right) → Optic Tract → Superior Colliculus (Spatial processing / Hypothalamus (Circadian rhythm) / Thalamus → Cerebral Cortex 

Vision processing (In brain)

Thalamus → Primary visual cortex (Shape and distance) → Visual association cortex (Color and movement) → Temporal Lobe (Identification of object) / Parietal lobe (Spatial processing and motor response)

Motor Responses

Prefrontal cortex (Intent: What and why do we do with information) → Premotor Cortex + Supplementary motor area (Planning for which muscles are needed) → Primary motor cortex → Brainstem → Spinal cord → Muscle

Sympathetic nervous system

Central neuron (Signal from lateral horn) → Preganglionic fiber (Sends one signal to many directions) → Sympathetic chain ganglia (Sends signal to many post ganglionic nerves → Target effectors (Nerves that leads to organ)

Adrenal Medulla

Preganglionic fiber → Adrenal Gland

Parasympathetic system

Brainstem (Cranial nerves) / Sacral spinal cord (Spinal nerves) → Preganglionic fibers → Terminal ganglia (Near target effector) → Postganglionic fibers → Target effector

Sympathetic nervous system actions

Pupils dilate, saliva inhibited, airways dilate, heart rate increases, digestion inhibited by stomach, glucose release from liver, digestion inhibited by intestines, adrenaline released by kidney, bladder relaxes, reproductive system processes decreased.

Parasympathetic nervous system actions

Pupils constrict, salivation, airways constrict, heart rate slows, digestion in stomach and intestines, bladder constriction, reproductive system processes increase