Flashcards in Introduction Deck (36)
study of life
a body of systematized knowledge; a way of knowing
How does science work?
List some ways we can keep up with the advances of science.
1. Read in professional areas
2. Apply new findings to your profession
3. Apply new findings to your new daily lives
4. Attend professional meetings
5. Learn to think logically, be reasonable, and be unbiased as we evaluate new advances
How many cells are in the human body?
About 100 trillion
How many anatomical terms for parts are there in the human body?
Organization of the human body (smallest to largest)
Chemical (atoms & molecules) -> Cellular -> Tissue -> Organ -> Organ System -> Organismal
What is the biochemical definition of life?
Coordinated interaction of biomolecules
What is the relationship between structure and function?
function determines structure; form determines function
When does life begin?
the ability to maintain a constant internal environment
Give examples of homeostasis. Why is it important?
Define negative feedback. Why is it important?
The output shuts off the original stimulus. E.g. regulation of blood pressure
What is positive feedback? Why is it important?
the output enhances/exaggerates the original stimulus. E.g. childbirth, digestive system, blood clotting
What happens if we fail to maintain homeostasis?
It is the basis for disease
Which organ system is not concerned with homeostasis?
How do we maintain boundaries between the internal and external environments at the cellular and organismal levels?
towards the head
away from the head
towards the front of the body