Exam 1.3 Flashcards
(18 cards)
Define metabolism.
the chemical reactions in the body’s cells that change food into energy.
Anabolism.
When complex molecules are synthesized from simpler ones with the storage of energy.
Catabolism.
part of the metabolism responsible for breaking complex molecules down into smaller molecules.
Homeostasis.
Any process that living things use to actively maintain fairly stable conditions necessary for survival.
How is homeostasis controlled?
Negative feedback loops.
Components of a feedback system (3).
Sensor/Receptor, Control Center, Effector.
Negative Feedback System.
More frequent, resists change, narrow range, no need for external interruption, a way homeostasis keeps the body at equilibrium (Feedback System).
Positive Feedback System.
Less frequent, enhances change, wider range, needs external interruption, a way homeostasis keeps the body at equilibrium (Feedback System).
Anatomical Position.
The position with the body erect with the arms at the sides and the palms forward.
Identify why the anatomical position is important clinically.
Consistently describes the position of a patient to other employees.
Hydrogen Bond.
Weak bond between two molecules resulting from a chemical bond formed between an electropositive atom and a strongly electronegative atom, such as oxygen or nitrogen.
Solution & Components.
A homogeneous mixture of one or more solutes dissolved in a solvent; Solute and Solvent
The measure of the amount of a sub-component in a solution.
Concentration.
Acid.
Substances that produce hydrogen ions in a solution.
Base.
Compound that can accept a hydrogen ion.
pH.
A measure of how acidic/basic water is.
Buffer.
A solution usually containing an acid and a base, or a salt, that tends to maintain a constant hydrogen ion concentration.
How does the bicarbonate buffer system maintain acid base balance?
It helps control acid-base balance by excreting hydrogen ions and generating bicarbonate.
