ANFS350 Lecture Notes - Lecture 4: Endothelium, Autonomic Nervous System, Somatic Nervous System
28 Feb 2018
School
Department
Course
Professor
Document Summary
Animals engage in a variety of behaviors feeding, sleeping, grooming, reproduction, aggression, etc. Physiology can be influenced by age, sex, hunger, health. Stimulus -> receptor -> nerve impulse -> cns -> nerve impulse -> motor neuron activity. Photoreception- response to radiant energy in the visible wavelengths (humans: 390-700 nm) Thermoreception - response to radiant thermal energy in the non-visible wavelengths. Mechanoreception- response to kinetic energy (hearing, vibration, touch, pressure) Hair cell is the mechanoreceptor of the inner ear. Products from the endocrine, immune, and peripheral systems can inform the brain of the body"s condition. Estrogen can stimulate sexual motivation and receptivity in females. Insulin has a role in satiety (loss of appetite) Immune cytokines (il-1, il-6, tumor necrosis factor) - stimulate loss of appetite. Not all substances in blood can reach the brain. Certain parts of the brain are more receptive to substances in the blood (circumventricular tissues) Peripheral nervous system monitors events in the body and reports to.
