Bioenergetics Flashcards
Bioenergetics
The scientific study of how energy is created and used in the human body.
Energy
the ability to do physical work
Metabolism
The sum of all chemical reactions in the body that either use or create energy.
Homeostasis
A state of balance and stability within the human body. The body’s ability to maintain an overall balance of metabolic processes to adapt to the changing environment.
Adenosine Triphosphate
The energy currency of the body. A chemical compound made up of adenosine and three phosphate molecules.
Creatine phosphate
A high-energy chemical compound stored in the muscle cell. With the aid of an enzyme called creatine kinase, CP splits to create ATP and provide energy.
lactate threshold
The point at which the lactic acid begins to accumalate in the blood.
anaerobic glycolysis
One of the body’s energy systems in which chemical reactions take place in the absence of oxygen. Energy is created by the metabolism of stored creatine phosphate, or glucose depending on the intensity of the activity.
aerobic system
One of the body’s energy production systems in which chemical reactions take place with oxygen. Energy is created by the metabolism of oxygen and glucose, or oxygen and fatty acids, depending on the intensity of the activity.
oxygen deficit/debt
The cellular situation in which the body does not have the required amount of oxygen to maintain homeostasis and meet the needs of the increased level of activity.
(EPOC) excess post-exercise oxygen consumption
The process by which the body continues to take in extra oxygen postexercise, to recover the cell and repay the oxygen deficit that occured while active.
