A&P Chapter 2 Flashcards
The body is made up of many ______
Chemicals
Chemistry underlies all ______ reactions
Physiological
What are some examples of physiological reactions?
Movement, digestion, pumping of the heart, and nervous system
Chemistry can be broken down into what two categories?
- Basic chemistry
- Biochemistry
What is matter?
Anything that has mass and occupies space
Matter can be:
1. _______
2. _______
and/or
3. _______
Seen, smelled, felt
Weight is _____ + the effects of what?
Mass + the effects of gravity
What are the three possible states that matter can exist in?
- Solid
- Liquid
- Gas
What are characteristics of a solid?
Definite shape and volume
What are characteristics of a liquid?
Changeable shape; definite volume
What are characteristics of a gas?
Changeable shape and volume
What is energy?
The capacity to do work or put matter into motion
What are the two possible forms of energy?
Kinetic and potential
What is kinetic energy?
Energy in action
What is potential energy?
Stored (inactive) energy
Energy can be transformed from ______ —> what?
Potential —> kinetic energy
Stored energy can be ______, resulting in action
Released
All matter is composed of what?
Elements
4 elements make up what percentage of the body and what are they?
96% of the body is made up of carbon, oxygen, hydrogen, and nitrogen
9 elements make up how much of the body?
3.9%
11 elements make up how much of the body?
<0.01%
The periodic table lists what elements?
All known
What are all elements made up of?
Atoms
What are atoms?
- Unique building blocks for each element
- Smallest particles of an element with properties of that element
- What gives each element its particular physical and chemical properties