The somatic nervous pathway is made up of nerves that connect to the skin, sensory organs and allskeletal muscles. The system is responsible for nearly all voluntary muscle movements as well as forprocessing sensory information that arrives through external stimuli, which are things like hearing, touchand sight.The somatic motor pathways include smooth muscle, cardiac muscle, and glands. The two divisionswould be sympathetic division and parasympathetic division. Parietal lobe Frontal lobe Occipital lobe Thalamus Cerebellum
Cerebrum ain Cervical Cerebellum Enlargement SpinalNerve CordRoot ain ain Membranous covering (meninges) Lumbar Enlargement Filum terminale
Autonomic Nervous SystemFunction: Pathways in the ANS carryinformation to the visceral effectors which arethe smooth muscles, cardiac muscles, and
glands. It powers itself without our consciousknowledge. It has two efferent divisionsincluding the sympathetic andparasympathetic division. They are made upof autonomic nerves, ganglia, and plexuses.The parasympathetic division is the “rest andrepair” division that uses acetylcholine it’stransmitter to slow the heartbeat, promotedigestion etc. Parasympathetic stimulationshave different effects on effectors such asconstriction of bronchioles and contraction ofurinary bladder. The sympathetic divisionopposes the parasympathetic impulses whichwould for example, raise the heartbeat.
Sympathetic stimulations have effects likedilation of bronchioles and relaxation ofurinary bladder. As a whole, the ANSfunctions to regulate autonomic effectors tomaintain homeostasis. For example, X Vagusgoes to the heart and controls the heartbeat,while the IX Glossopharyngeal goes to thelungs and control respiratory actions.