LRA 110 Final Exam Review

• In the SI system the unit of measure for length is meter
• The property of an object with mass that resists a change in its state of motion is inertia
• Acute radiodermatitis

  • radiation burn resulting from excessive exposure to x-rays
  • common among early patients and operations of x-ray equipment
  • a delayed reaction to excessive x-ray exposure
• Kinetic energy is energy being expended
• Watt is the unit of measure of power
• Einstein's formula, E=MC^2, demonstrates the relationship between matter and energy
• In the British system the unit of measure for length is foot
• In the British system the unit of measure for time is seconds
• Newton's first law of motion states that, unless acted on by an external force, an object at rest will stay at rest
• Exposure times for very early radiographs ranged from 20 minutes to 2 hours
• X-rays were discovered November 8, 1895
• The standard radiologic unit that quantifies radiation intensity is the roentgen
• Exposure, dose, and dose equivalent are radiologic quantities
• Electromagnetic, chemical, electrical, and thermal are all types of energy
• Joule is the unit of measure of work
• The standard radiologic unit that quantifies the biological effect of radiation on humans and animals is the radiation absorbed dose (rad)
• The principle of inertia was first described by Sir Isaac Newton
• Velocity is equal to the distance traveled divided by the time needed to cover that distance
• An example of how x-rays were used for entertainment or business gain in a dangerous manner was the fluoroscopic shoe fitter
• The metric system is also known as the System of Units (SU)
• In the British system, the unit of measure for mass is pound
• Energy in a stored state is potential energy
• The first radiograph produced by Dr. Roentgen was of his wife's hand
• Mass, length, and time are considered fundamental quantities
• In the SI system, the unit of measure for mass is kilogram
• Thomas Edison brought attention to the dangers of x-rays
• Barium plantinocyanide was the material in Dr. Roentgen's laboratory that fluoresced when the cathode ray tube was energized
• In the SI system, the unit of measure for time is seconds
• The ability to do work is energy
• Wilhelm Roentgen's lab was located in Wurzburg
• Cartilaginous joints are held together by catilage
• The femur is an example of a long bone
• There are 126 bones in the appendicular skeleton
• There are 80 bones in the axial skeleton
• The temporomandibular joint is an example of a bicondylar joint
• There are 206 bones in the entire skeletal system
• The primary growth center in bone development is the diaphysis or the body
• There are 10 individual body systems
• The primary center for bone growth is the diaphysis
• A diarthrodial joint is freely movable