Chapter 1- Anatomy and Physiology
Terms in this set (9)
List the survival needs
Nutrients, oxygen, water, normal body temperature, appropriate Atmospheric Pressure.
contain the chemical substances used for energy and cell building.
All nutrients in the world are useless unless oxygen is also available because the chemical reactions that release energy from foods are oxidative reactions that require energy
accounts for 60-80% of our body weight and is the single most abundent chemical substance in the body
Normal body Temperature
As body temperature drops below 37C (98.6F) metabolic reactions become slower and slower and finally stop.
Apporopriate Atmospheric Pressure
the force that air exerts on the surface of the body. Breathing and gas exchange in the lungs depends on appropriate atmospheric pressure.
What seperates living beings from nonliving objects?
Living organisms can maintain their boundaries,move,respond to enviromental changes, digest nutrients, carry out metabolism, dispose of waste, reproduce and grow. While inaminate objects may exhibit some of these properties but not all.
What name is given to all chemical reactions that occur within body cells?
Metabolism isthe term that encompasses all the chemical reactions that occur in body cells.
Why is it necessary to be in a pressurized cabin when flying at 30,000 feet?
In flight, the cabin must be pressurized because the atmosphere is thinner at high altitudes and the amount of oxygen entering the blood under such conditions may be insufficient to maintain life.