LRA 110 Final Exam Questions and Answers Rated A+

LRA 110 Final Exam Questions and Answers Rated A+ x rays were discovered ? November 8, 1895 by Wilhelm Conrad Roentgen the first radiograph produced by Dr. Roentgen was of His wife's hand radiation burn resulting from excessive exposure to xrays common among early patients and operators of xray equipment a delayed reaction to excesssive xray exposure acute radiodermatitis Watt is the unit of measure of power energy in a stored state is potential energy energy being expended? potential energy or kinetic energy kinetic energy the standard radiologic unit that quantifies radiation intensity is the roentgen the standard radiologic unit the quantifies the biological effect of radiation on humans and animals is the rad the standard radiologic unit that quantifies occupational exposure or dose equivalent is the rem the _______ is the SI unit equivalent to the rad gray the ___________ is the SI unit equivalent to the rem Sivert the SI radiologic unit that addresses the different biological effects of different types of ionizing radiation is the sivert the positive electrode of the xray tube is the anode the negative electrode of the xray tube is the cathode the device that restricts the xray beam to the area of interest is the collimator lead shutters are part of the collimator the device that is located just under the xray table and holds the image receptor in place is the bucky assembly upright radiographic examinations can easily be done with a wall unit the electricity applied to the tube during xray production is controlled at the control panel what principle articulates the radiographers responsibility to minimize radiation exposure to the patient oneself and others? ALARA (as low as reasonably achievable) which of the following is NOT a cardinal principle for minimizing radiation dose? distance shielding collimaiton time collimation which of the following is NOT one of the tools/tasks or radiation? decrease collimation increase kvp and decrease mAs avoid duplicate exams decrease collimation mass does not change with gravitational force? true or false true screening for pregnancy is not a task the radiographer would perfom before a radiographic procedure on a female paient true or false false radiographers can develop good work habits by developing a mental checklist for radiographic procedures and performing them the same way every time true or false true which of the following joints displays flexion and extension type of movement primarly elllipoidal ginglymus(hinge) saddle pivot ginglymus (hinge) joint how many individual body systems comprise the human body 10 the lowest level of structural organization in the human body is the __________ level chemical which of the following is classified as a bicondylar joint distal radioulnar joint first and second cervial verebrate joint temporomadibular joint shoulder joint temporomadibular joint what is the primary center for bone growth termed diaphysis how many bones comprise the entire skeletal system 206 how many bones are in the axial skeleton 80 how many bones are in the appendicular skeleton 126 which body system is responsible for the absorption and elimination of nutrients and waste? digestive system the femur is an example of what classification of bone long bone cartilaginous joints are held together by Cartilage a diarthrodial joint is ? fused somewhat moveable immovable freely moveable freely movable synchondrosis, symphysis joints are types of cartilaginous joints a synovial joint with a spherodial movement (ball and socket ) can be represented by what anatomy the spine the femur and hip articulation the finger the elbow the femur and hip articulation the primary growth center in bone development is called the diaphysis or body the skull cap or calvaria is an example of what classification of bone ? flat bone the vertical plane that divides the body into equal right and left halves describes what plane? midsagittal plane which of the following terms describes the sole of the foot? anterior palmer volar plantar plantar which term describes the back or posterior aspect of the hand? dorsum pedis plantar dorsum manis volar dorsum manis a position in which the head is lower than the feet is Trendelenburg position which term describes lying down in any position? recumbent a recumbent oblique position in which the patient is lying on the left anterior surface with it rotated toward the image receptor is termed Sims position a patient is lying on her back facing the xray tube. the right side of her body is turned 20 degrees toward the image receptor. what is the readiographic position? RPO (Right Posterior Oblique) a patient is erect with the left side directly aganist the image receptor. the central ray (CR) enters the right side of the body . what is the radiographic position? Left lateral a patient is erect facing the image receptor. the left side of the body is turned 45 degrees toward the image receptor. the CR enters the posterior aspect of the body and exits the anterior. what is the radiographic position? left posterior oblique a projection in which the CR skims the body part to project it in profile is termed? tangential the opposite of supination is Pronation a dorsoplantar projection would be a radiographic study of the foot moving the foot and toes downward is inversion circumduction plantar flexion eversion plantar flexion movement in the form of a circle is the definition for circumduction a position where the body is turned at a 45 degree angle is called oblique the CR is angled 15 degrees toward the feet . is the angle caudal cephalad medial caudal movement of an arm or leg toward the midline is abduction true or false false the CR angle towards the head is caudal true or false false rotation of the hand with palm down in supination true or false false increasing the angle of a joint is flexion true or false false if a person is standing in the anatomical position, the inside of the arms and legs are considered lateral false the ankle is proximal to the toes true or false true tilt and rotation of the head are the same thing? true or false false the sagittal plane divides the body front and back true or false false transverse and axial planes are the same true or false true anything that occupies space and has shape or form matter according to the basic principles of radiation protection, a radiographer should minimize time the curie is an expression of Quantity of radioactive material xray examinations of lower abdomen and pelvis of women in reproductive years should be limited to the 10 days after the onset of menstruation a radiographers dosimetry report is expressed in msv