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Chapter 1
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65
Anatomy
Undergraduate 2
09/07/2012

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Term
Anatomy
Definition
the study of the structure of body parts and their relationships to each other
Term
Physiology
Definition
the study of the function of body parts
Term
Gross or Macroscopic Anatomy
Definition
the study of structures large enough to be seen by the naked eye
Term
Regional Anatomy
Definition
the study of all the body structures in the given body region
Term
Systemic Anatomy
Definition
the study of all body structures in a body system
Term
Surface Anatomy
Definition
the study of internal body structures as they relate to the overlying skin
Term
Microscopic Anatomy
Definition
the study of structures that are too small to be seen with the naked eye
Term
Cytology
Definition
the study of individual cells
Term
Histology
Definition
the study of tissues
Term
Developmental Anatomy
Definition
the study of the change in body structures over the course of a lifetime
Term
Embryology
Definition
the study of the development before birth
Term
Pathological Anatomy
Definition
the study of structural changes associated with disease
Term
Radiographic Anatomy
Definition
the study of internal structures using specialized visualization techniques
Term
Molecular Anatomy
Definition
the study of biological molecules
Term
The Principle of Complementarity of Structure and Function
Definition
states that function is dependent on structure, and that the form of a structure relates to its function
Term
Chemical Level
Definition
the simplest level of organization
Term
Organelles
Definition
the basic unit of living cells
Term
Cellular Level
Definition
the smallest unit of life, and varies widely in size and shape according to the cell's function
Term
Tissue Level
Definition
groups of cells having a common function
Term
Organ Level
Definition
made up of discrete structures that are composed of at least two groups of tissues that work together to perform a specific function in the body
Term
Organ System Level
Definition
a group of organs that work closely together to accomplish a specific purpose
Term
Organism Level
Definition
the total of all structures working together to promote life
Term
What are the 8 Necessary Life Functions?
Definition
maintain boundaries, movement, responsiveness (or irritability), digestion, reproduction, excretion, metabolism, and growth
Term
Maintaining Boundaries
Definition
allows an organism to maintain separate internal and external environments, or separate internal chemical enviornments
Term
Movement
Definition
allows the organism to travel through the environment, and allows transport of molecules within the organism
Term
Responsiveness or Irritability
Definition
the ability to detect changes in the internal or external environment and respond to them 
Term
Digestion
Definition
the process of breaking down food into molecules that are usable by the body
Term
Metabolism
Definition
includes all chemical reactions that occur in the body
Term
Excretion
Definition
the process of removing wastes 
Term
Reproduction
Definition
the process of producing more cells or organisms
Term
Growth
Definition
an increase in size in body parts or the whole organism
Term
What are the 5 Survival Needs?
Definition
nutrients, oxygen, water, normal body temperature, and atmosphere
Term
Nutrients
Definition
consumed chemical substances that are used for energy and cell building
Term
Oxygen
Definition
required by the chemical reactions that release energy from foods
Term
Water
Definition
provides an environment for chemical reactions and fluid medium for secretions and excretions 
Term
Normal Body Temperature
Definition
required for the chemical reactions of the body to occur at the proper rate
Term
Atmosphere
Definition
pressure must be within an appropriate range so that proper gas exchange occurs in the lungs
Term
Homeostasis
Definition
the ability of the body to maintain a relatively constant internal environment, regardless of the environmental changes
Term
Components of Homeostatic Control Mechanisms
Definition
variable, receptor, control center, and effector
Term
Variable
Definition
the regulated factor or event
Term
Receptor 
Definition
structure that monitors changes in the environment and sends information to the control center 
Term
Control Center
Definition
structure that determines the set point for a variable, analyzes input, and coordinates an appropriate response 
Term
Effector
Definition
structure that carries out the response directed by the control center
Term
What is the goal of negative feedback?
Definition
to prevent sudden, sever changes in the body
Term
What does a negative feedback mechanism do?
Definition
causes the variable to change in a way that opposes the internal change
Term
What Does a Positive Mechanism Do?
Definition
causes the variable to change in the same direction as the original change, resulting in a greater deviation from the set point
Term
Anatomical Position
Definition
a position in which the body is erect, palms face forward, and thumbs point away from the body
Term
Axial Region
Definition
consists of the head, neck, and trunk
Term
Appendicular Region
Definition
consists of the upper and lower limbs
Term
Body Planes
Definition
flat surfaces that lie at the right angles to each other
Term
Sagittal Plane
Definition
a vertical plane that separates the body into right and left parts
Term
Frontal Plane
Definition
a vertical plane that separates the body into anterior and posterior parts
Term
Transverse Section or Cross Section
Definition
a cut made along the transverse plane
Term
Transverse or Horizontal Plane
Definition
a plane that runs horizontally from right to left, and divides the body into superior and inferior parts
Term
Oblique Sections 
Definition
cuts made at angles between the horizontal and vertical planes
Term
Body Cavities
Definition
spaces within the body that are closed to the outside and contain the internal organs
Term
Dorsal Body Cavity
Definition
the space that houses the central nervous system and has two subdivisions: the cranial cavity and the vertebral cavity
Term
Cranial Cavity
Definition
within the skull, and houses the brain
Term
Vertebral or Spinal Cavity
Definition
within the vertebral column, and houses the spinal cord
Term
Oral and Digestive Cavitites
Definition
continuous cavities that extend from the mouth through the digestive system to the anus
Term
Nasal Cavity
Definition
within and posterior to the nose
Term
Orbital Cavity
Definition
houses the eyes
Term
Middle Ear Cavity
Definition
within the skull just medial to the eardrums, and house the bones that transmit sound vibrations to the internal ears
Term
Synovial Cavities
Definition
joint cavities lined with a lubricating fluid-secreting membrane associated with all movable joints
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