ANSC 3080 Lecture 1: Homeostasis and Neuro
8 Dec 2017
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Homeostasis: maintenance of constant internal environment, coordinated response (more than 1 system) of organs and systems that automatically (autonomic nervous system, no cognitive thought) compensate for environmental changes, blood pressure, body temperature, calcium levels. Involuntary muscle contraction: antagonistic muscles contract simultaneously. Learning objectives: define the structure and function of different classes of neurons, explain the mechanisms in forming membrane potentials, describe the events and properties of action potentials, describe and explain synaptic transmission. Interneurons connects info between neurons in the. Organization of the cns: brain, cerebrum, diencephalon (thalamus and hypothalamus, cerebellum, mesencephalon, pons, medulla oblongata (brain stem, spinal cord. Task of the cns: gets constant flow of information from inside and outside, analyze and interpret information, sends messages to body, keep internal systems working, respond to environment. Inserted between cerebral hemispheres the brain: mid meninx arachnoid, sub arachnoid space between arachnoid and pia mater, filled with cerebrospinal fluid.
