What is the study of the structures of the body called?
Anatomy
What is the study of the processes and functions of the body called?
Physiology
What are the 6 levels of organization for the human body?
Chemical
Cell
Tissue
Organ
Organ System
Organism
What does the chemical level of organization involve?
It involves how atoms interact and combine into molecules.
What is the basic structural and functional unit of organisms?
Cell
What is a tissue?
A group of similar cells and the material surrounding them.
What is an organ composed of?
Two or more tissue types that together perform one or more common functions.
What defines an organ system?
A group of organs classified as a unit because of a common function or set of functions.
What is an organism?
A complex of organ systems that are mutually dependent upon one another.
What are the 11 organ systems of the human body?
Integumentary
Skeletal
Muscular
Nervous
Endocrine
Cardiovascular
Lymphatic
Respiratory
Digestive
10. Urinary
11. Reproductive
What is the function of the integumentary system?
Provides protection, regulates temperature, prevents water loss, helps produce vitamin D.
What are some organs associated with the skeletal system?
Bones, associated cartilages, ligaments, joints.
What is the primary function of the muscular system?
Produces body movements, maintains posture, produces body heat.
What does the nervous system control?
Detects sensations and controls movements, physiological processes, and intellectual functions.
What is the role of the endocrine system?
Influences metabolism, growth, and reproduction through hormone secretion.
What does the cardiovascular system transport?
Nutrients, waste products, gases, and hormones throughout the body.
What is the function of the lymphatic system?
Removes foreign substances from the blood and lymph, combats disease, maintains tissue fluid balance, absorbs dietary fats.
What is the primary function of the respiratory system?
Exchanges oxygen and carbon dioxide between the blood and air, regulates blood pH.
What does the digestive system do?
Performs the mechanical and chemical processes of digestion, absorption of nutrients, elimination of wastes.
What is the function of the urinary system?
Removes waste products from the blood and regulates blood pH, ion balance, and water balance.
What is the role of the reproductive system?
Produces oocytes for females and sperm cells for males for reproduction and hormones that influence sexual functions and behaviors.
What are the 6 essential characteristics of life?
Organization
Metabolism
Responsiveness
Growth
Development
Reproduction
What does homeostasis refer to?
The condition in which body functions, body fluids, and other factors of the internal environment are maintained within a range of values suitable to support life.
What is a negative feedback mechanism?
A mechanism that regulates most systems of the body by making any deviation from the set point smaller or resisted.
What is a positive feedback mechanism?
A mechanism that occurs when the initial stimulus further stimulates the response.
What is the anatomical position?
Person standing upright
Face directed forward
Upper limbs hanging to the sides
Palms facing forward
What are the planes of the body?
Sagittal Plane: Separates body into right and left parts
Median Plane: Divides body into equal right & left halves
Transverse/Horizontal Plane: Divides body into superior and inferior parts
Frontal/Coronal Plane: Divides body into anterior and posterior parts
What are the sections of the body?
Longitudinal: Cut along the length of the organ
Transverse/Cross Section: Cut completely through an organ
Oblique: Cut made diagonally across the long axis
What are the trunk cavities?
Thoracic Cavity: Surrounded by rib cage, separated from abdominal cavity by diaphragm