Lecture 2 Organ Systems & Technology

• Tissues

  A group of cells, not necessarily all the same, that group together to complete the same function
• Organs

  Groups of tissues specialized to carry out a particular function
• Organs


  • Heart
  • Liver
  • Lungs
• Organ System

  A group of organs with a related function
• Organ System


  • Digestive system (stomach, esophagus, liver, small intestine etc.)
• Different organ systems will interact together to regulate the body
• 1. RAY

  High energy electromagnetic waves to see the skeletal system of the body and can also see soft tissues
• 1. RAY

  • Mammogram
• CAT SCAN (CT Scan)

  Takes hundreds of x-ray pictures of the body at different angles to create a detailed image, creating a view of bones, organs, soft tissue, blood vessels with more clarity than x-rays
• MRI


  Produces an internal structure of the body through radio waves and magnetic fields and will be more detailed than x-ray or CAT scan
• ULTRASOUND


  Sound waves are used to create 3D or even 4D digital images of the body
• Mammograms


  A type of x-ray used to detect breast cancer, which is the second leading cause of cancer in women
• Nuclear Imaging (PET Scan)


  Images made by detecting radiation from the body after radioactive tracers are given, tracers are injected or taken orally, will be done with CT or MRI
• GI Endoscopy

  A procedure that allows doctors to look inside the esophagus, stomach and first part of the small intestine (duodenum) using a small flexible camera called a "scope"
• Colonoscopy


  A test that allows a doctor to look at the inner lining of the large intestine using a flexible tube called a "colonoscope" to help find ulcers, polyps, tumors etc.
• NMR Spectroscopy (Nuclear Magnetic Resonance)

  Every nucleus has a spin and when exposed to magnetic waves the nucleus can increase energy level. When the magnetic field is removed this "extra" energy frequency is released and can be measured, used in studying structures of large molecules like proteins/enzymes
• NMR has played a key role in development of vaccines, disease treatment/medication, and cancer study