BIO 12 Lecture Notes - Lecture 1: Peripheral Nervous System, Central Nervous System, Spinal Nerve
14 Sep 2020
School
Department
Course
Professor
Document Summary
It is a complex network of nerves and cells that carry messages to and from the brain and spinal cord to various parts of the body. It consists of two main functional and structural division: central. Cranial nerves (to and from the brain) Spinal nerves (to and from the spinal cord) Ganglia (clusters of neuron cell bodies located outside the cns) Major functions: sensory input, integration, motor output. It is the communication and coordination system of the body. The brain is the seat of intellect and reasoning. Nervous tissue tissues that transmits impulse and messages to the body. Consists of two (2) major types of nerve cells: neuroglia or glial cells. Transport nutrients to neurons and restrict what substances can enter the brain, forming the blood - brain barrier. It provides structural support, regulates ion, nutrients and dissolved gases concentrations. Remove cellular debris, wastes and pathogens by phagocytosis from the nerve tissues.
