Study of the structure and function of the human body
Coordinated function of all the parts of the human body
Allows us to interact with our surroundings by adjusting how the body responds to changes in environmental information
Information
Comes from inside and outside of the body
Changes
Serve as stimuli
Provides basis for understanding disease
Important for students who plan a career in health science
Allows us to distinguish between useful medical treatments and those that may be harmful
Anatomy
Scientific discipline that investigates the structure of the body
Dissect
Cut apart; separate
Examines the relationship between structure of a body part and its function
Approaches to studying anatomy
Systematic anatomy
Regional anatomy
Systematic anatomy
Study of the body by systems
Systems
Cardiovascular, nervous, skeletal, and muscular system
Regional anatomy
Study of the organizations of the body by areas
Areas
Head, abdomen, arm
Approach taken in most medical and dental schools
Ways to examine the internal structure
Surface anatomy
Anatomical imaging
Surface anatomy
Study of external features that serves as landmarks for locating deeper structures
External features
Bony projections
Anatomical imaging
Use of x-rays, ultrasounds, magnetic resonance imaging (MRI), and other technologies to create pictures of internal structures
Both surface anatomy and anatomical imaging provide important information for diagnosing disease
Physiology
Scientific discipline that deals with the processes or functions of living things
Recognize structures as dynamic rather than fixed and unchanging
Goals in studying physiology
To understand and predict the body's responses to stimuli
To understand how the body maintains internal conditions within a narrow range of values in the presence of continually changing internal and external environment
Human physiology
Study of specific organisms, the human
Cellular physiology
Study of the activities that take place in a cell to keep it alive
Systemic physiology
Study of specific organ systems, such as how they function
Structural levels of the human body
Chemical level
Cell level
Tissue level
Organ level
Organ system level
Organism level
Chemical level
Involves how atoms interact and combine into molecules
Molecule's structure determines its function
Cell level
Cells are the basic structural and functional units of organisms
Molecules combine to form organelles, small structure that make up cells
Tissue level
Tissue is a group of similar cells and the materials surrounding them
Characteristics of the cells and surrounding materials determine the function of the tissue
Primary types of tissues
Epithelial
Connective
Muscle
Nervous
Organ level
Organ is composed of two or more tissue types that together perform one or more common function
Organ system level
Organ system is a group of organs classified as a unit because of a common function or set of function
Coordinated activity of the organ systems is necessary for normal function
Dysfunction in one organ system can have profound effect on other systems due to the interrelated of the organ systems