Introduction To The Body Flashcards
Scientific method
Any logical and systematic approach to discovering principles of nature, often involving testing of tentative explanation called hypotheses
Hypothesis (plural = hypotheses
A proposed explanation of an observed phenomenon.
Experimentation
The performance of a study that usually tests a tentative explanation of nature called a hypothesis
Experimental controls
Any procedure within a scientific experiment ensures that the test situation itself is not affecting the outcome of the experiment
Theory vs Law
Law - a scientific law is a theory, or explanation of a scientific principle, with an extraordinary high degree of confidence of scientists based on experimentation
Theory - an explanation of a scientific principle that has been tested experimentally and found to be true; compare to hypothesis and law
Levels of organization
The levels of organization progress from the least complex (chemical level) to the most complex (organism level.)
Chemical Level Of Organization Includes:
Atoms-> Molecules
What are cells considered
To be the smallest “living” units of structure and function in our body.
What is an organization of many cells that act together to perform a common function?
Tissues
What is a group of several different kinds of tissues arranged in ways that allow them to act as a unit to perform a special function? Is also larger and more complex than tissues.
Organs
Unlike microscopic molecules and cells, some tissues and most organs are gross (large) structures that can be seen easily without a microscope.
What are the most complex units that make up the body? A varying numbers and types of organs that can work together to perform complex functions?
System
What is the body as a whole?
Organism
Supine Position
– the body is lying face upward
Prone Position
- the body is lying face downward
Superior
– towards the head, upper or above
Inferior – towards the feet, lower or below
Anterior (ventral)
– front, in front of