Definition of Feedback – Introduction to fundamental concepts of Biological Science including the organization and common characteristics of living matters, cell structures and functions, food production by photosynthesis, harvesting energy, mechanism of cells reproduction, genetics, evolutions, and Human Biology. Introduction to general chemistry including basic concepts about matter, atomic structure, chemical bonds, gases, liquid, and solids, solutions, chemical reactions, acid, bases, and salt;
organic and biochemistry including hydrocarbons and their derivatives, carbohydrates, lipids, proteins, enzymes, vitamins, and minerals, nucleic acids; principles of physics and applications to nursing including gravity and mechanics, pressure, heat and electricity; nuclear chemistry and nuclear physics, effects of radiation on human beings, and protection and disposal. The aim of the course is to acquire knowledge and skills in general biological science, general chemistry and physics.
Definition of Feedback
Feedback is the auto response of a system to a stimulus which is received by that system, i.e. it is a link between effector and receptor.
Types: Two type:
- Positive feedback mechanism.
- Negative feedback mechanism
Control Systems of the Body:
The human body has literally thousands of control systems in it. Some of these are-
- The genetic control system: The most intricate of all the control systems that operate in all cells to control intracellular & extracellular functions.
- The nervous system: It regulates the body function,
- The respiratory system: It regulates the concentration of O2 & CO2 in the extracellular fluid (ECF).
- The liver & Pancreas: Regulates the concentration of glucose in the ECF
- The kidneys: It regulates the concentration of H+, Na+, K+, PO4³ & other ions in the ECF.
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