PSYC 110 Lecture Notes - Lecture 11: Peripheral Nervous System, Parasympathetic Nervous System, Autonomic Nervous System
Document Summary
*the slides from this lecture are very helpful. Neuron and nerve: neuron- the basic unit of the nervous system are individual neurons, neurogenesis (the development) begins prenatally and newborns have more neurons in their brains than adults. Selective death of neurons also begins prenatally and continues after birth: nerve- a bundle consisting of the axons of many neurons within the peripheral nervous. The nervous system: peripheral nervous system (pns, central nervous system (cns -brain and spinal cord, they work together. The central nervous system: brain and spinal cord, composed of interneurons. Peripheral nervous system: conne(cid:272)ts the (cid:272)e(cid:374)tral (cid:374)er(cid:448)ous s(cid:455)ste(cid:373) to the (cid:271)od(cid:455)"s orga(cid:374)s a(cid:374)d (cid:373)us(cid:272)les, autonomic nervous system (ans) controls self-regulated action of internal organs and glands. Glial cells: the glue: neurons- 10% of your brain, glial cells- 90% of your brain/ helps out the neuron, astrocites- babysitters of the neuron/ clean up neurons, oligodendrocytes- insulators of the cns.
