SPHS-S 108 Lecture Notes - Lecture 1: Cerebral Palsy, Action Potential, Cranial Nerves
1 Aug 2018
School
Department
Course
Professor
Document Summary
Anatomic orientation terminology: anterior: toward the front, ventral: toward the belly/front, posterior: toward the back, dorsal: toward the back, (cid:862)caudal(cid:863) = used for (cid:374)o(cid:374)-human animals, superior: toward the top, ventral: toward the top (brain) Neuron anatomy: dendrites: branched projections that propogate electrochemical signals received from other neurons, axon: singular elongated projection that conducts an electrical signal away from the cell body, myelin sheath: fatty covering over the axon that speeds conduction. Neuron types: efferent: motor neurons; convey impulses from the brain to the body, afferent: sensory neurons; convey impulses from the body to the brain, neurotransmitters. Peripheral nervous system: 31 pairs of spinal nerves, not specialized for sensory of motor functions. Innervate specific parts of the bosy: 12 pairs of cranial nerves important for speech: look at book, v trigeminal, motor mastication, vii- facial, motor to facial muscles, viii auditory, sensory hearing and balance.
