Chapter 1 - ANSWER Introduction to Human Anatomy and Physiology
What is the difference between anatomy and physiology? - ANSWER Anatomy examines
the structures, or morphology, of body parts—their forms and organization. Physiology
considers the functions of body parts—what they do and how they do it.
What are the levels of organization and define each. - ANSWER Subatomic Particles-
Atoms-Smallest particle of an element that has the properties of that element
Molecule-Particle composed of two or more joined atoms
Macromolecule-Very large molecule, such as a protein, starch, or nucleic acid
Organelle-
Cell- The structural and functional unit of an organism,
Tissue-Assembled group of similar cells that performs a specialized function
Organ-Structure consisting of two or more tissues with a specialized function
Organ System-Group of organs coordinated to carry on a specialized function
Organism- An individual living thing
What are the characteristics of life and define each. - ANSWER Growth-Increase in cell
number and size and increase in body size
Reproduction-Production of new cells and organisms
Responsiveness-Reaction to a change inside or outside of the body
Movement-Change in body position or location; motion of internal organs
Metabolism-The sum of all chemical reactions in a living system: Energy and nutrient
cycling
, What are the requirements of life? Why is each important? - ANSWER Water-Water also
carries substances within the organism and is important in regulating body
temperature.
Heat-It is a product of metabolic reactions, and the degree of heat present partly
determines the rate at which these reactions occur.
Pressure-In humans, this pressure is important in breathing.
Define homeostasis. - ANSWER Homeostasis refers to the body's ability to keep its
internal conditions stable, such that its cells can survive. To this end, all cells, whether
as part of a tissue, an organ, or an organ system, make some specific contribution.
What is a homeostatic mechanism? - ANSWER The body maintains homeostasis through
a number of self-regulating control systems
Chapter 2 - ANSWER Chemical Basis of Life
Define matter, element and atom. What is the basic unit of matter? - ANSWER
Atom-Smallest particle of an element that has the properties of that element
Element-Any of the fundamental chemical substances, each characterized by a distinct
type of atom.
Matter-Anything that has weight and occupies space.
Atoms are the basic unit of matter
What is the structure of an atom? - ANSWER An atom consists of a central portion called
the nucleus and one or more electrons that constantly move around the nucleus. The
nucleus contains one or more relatively large particles, protons and usually neutrons.
Define nucleus, proton, neutron and electron. What charges do each of these particles
have? - ANSWER Nucleus- The dense core of an atom that is composed of protons and
neutrons
Proton- Positively charged particle in an atomic nucleus.
Neutron- Electrically neutral subatomic particle.