Isotropic Study guides, Class notes & Summaries

what does the SR store - ANSWER-proteins and calcium what is the role of the transverse tubules in the muscle fiber - ANSWER-allow inside of muscle to communicate with the outside of the muscle how is a sarcomere measured - ANSWER-from z-disc to z-disc what is contained in the I band of the sarcomere & what color is the band - ANSWER-thin filaments titin z-disc light (isotropic) what is contained in the A band of the sarcomere & what color is the band - ANSWER-thick filaments ...

what does the SR store - proteins and calcium what is the role of the transverse tubules in the muscle fiber - allow inside of muscle to communicate with the outside of the muscle how is a sarcomere measured - from z-disc to z-disc what is contained in the I band of the sarcomere & what color is the band - thin filaments titin z-disc light (isotropic) what is contained in the A band of the sarcomere & what color is the band - thick filaments thin filaments dark (scatters lig...

MATSE 259 Exam 1 PSU With Complete Solutions Elastic Modulus (e) measure of stiffness, or a material's resistance to elastic deformation ... slope of elastic portion of stress-strain curve Crystalline Materials small group of atoms that are repeated by translation to form 3-D arrangements Antisotropic properties that vary with direction. Ex: E(edge) isn't equal to E(diagonal) Polycrystal properties that may or may not vary with direction Isotropic the grains a...

When were x-rays discovered? Ans: November 8, 1895 in Germany What are the 3 Cardinal Principals of radiation protection? Ans: Maximize distance, maximize shielding, minimize time What is Erythema? Ans: Reddening of the skin What is Anemia? Ans: Decrease of oxygen in blood, low blood count What is Leukopenia? Ans: Low WBC count What is epilation? Ans: Loss of hair What is collimation? Ans: Limits the size/area of the x-ray beam What is a proton? Ans: Positively charged, in nucleus...

Who discovered x-rays? Ans: Wilhelm Conrad Roentgen When were x-rays discovered? Ans: November 8, 1895 in Germany What are the 3 Cardinal Principals of radiation protection? Ans: Maximize distance, maximize shielding, minimize time What is Erythema? Ans: Reddening of the skin What is Anemia? Ans: Decrease of oxygen in blood, low blood count What is Leukopenia? Ans: Low WBC count What is epilation? Ans: Loss of hair What does ALARA stand for? Ans: As Low As Reasonably Achievable W...

4 image considerations of image quality SNR CNR SR Scan time Which extrinsic factor will have greatest affect of SNR Coil type Which type of tissue will produce lowest SNR Muscle White matter Gray matter Cortical bone Cortical bone A coarse matrix will have High # of freq/phase Low # of freq/phase Large pixels High SNR High # of freq/phases Doubling slice thickness will increase or decrease SNR? Increase SNR Increasing TR will decrease or increa...

Which artery travels in the coronary sulcus between the left atrium and the left ventricle? a. Left anterior descending b. Circumflex c. Right coronary d. Left coronary correct answer: b travels in the coronary sulcus. correct answer: The circumflex descending travels down the anterior surface of the interventricular septum. correct answer: The left anterior originates from an ostium behind the right aortic cusp and travels behind the pulmonary artery. correct answer: The rig...

Radiation Protection in Medical Imaging Test (2024) || Questions & Answers (Rated A+) Radiation Protection in Medical Imaging Test (2024) || Questions & Answers (Rated A+) First recorded fatality in the US caused by the cumulative radiation exposure from x-rays. - ANSWER - Clarence Daily _____ energy can produce changes in atomic structure by creating positively or negatively charged atoms. - ANSWER - Ionizing Bremsstrahlung radiation is created when the electron stream interacts wit...

What does a photometer do? - ANSWER It converts light into electric current. What are photons? - ANSWER Tiny quantized packets of light. What happens in the photoelectric effect? - ANSWER Light hits a metal and electrons are emitted. What should the digital multimeter be set to read? - ANSWER voltage How does the flux of light from an isotropic source depend on the distance r from the source? - ANSWER r−2 How does the flux of light from an collimated source depend on the distanc...

Module 7: Technology, Trade, and Exchange 7.1 Lithic Technology: Stone Tools Lithic Technology: making stone tools : -Pre-Olduwan (Ethiopia) ^~3.3 million years old -Oldowan Industry: (oldest stone tools known) ^Earliest stone tools was found at the Gona sites (2.6 mya) ^made by the Australopithecus garhi -Manufacturing/Reduction Technologies made: ^Flaked Stone ^Ground Stone These First appears during late Paleolithic Flaked Stone (Flintknapping) Cores and Flakes 2 | P a g e ...