Lectures Watched
Since January 1, 2014
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My Notes on Massive Open Online Course:
Vital Signs: Understanding What the Body Is Telling Us
Heart rate, blood pressure, respiration rate, temperature, pain. What do these vital signs tell you about your body? Learn the basic physiology underlying the vital signs and how to accurately assess them.
Notes on 1 Lectures I Watched in This Course:
Basic Heart Anatomy
3 Vocabulary Words I Learned in this Course:
etiology, n. the study of causation, or origination  "With infectious etiologies, a widened mediastinum is a classic hallmark sign of anthrax infection."
mediastinum, n. [may-dee-AST-ri-num] region in mammals between the pleural sacs, containing the heart and all of the thoracic viscera except the lungs (vessels of the heart, esophagus, trachea, phrenic nerve, cardiac nerve, thoracic duct, lymph nodes of the central chest)  "Lesions in the posterior mediastinum may encroach on the esophagus, causing dysphagia or odynophagia."
phrenic nerve, n. a nerve that originates in the neck and passes down between the lung and heart to reach the diaphragm, it is important for breathing  "The phrenic nerve is the sole motor supply to each hemidiaphragm."
6 Flashcards I Recorded in this Course:
membrane that surrounds the heart
vessel that carries blood back from the upper body back into the heart
superior vena cava
on an anatomy model, blue vessels carry what kind of blood?
blood comes back from the lungs into the left ventricle which pumps it out to the what?
what are the two kinds of circulation?
systemic (oxygenated blood to the body and back), and pulmonary (deoxygenated blood to the lungs and back)
which ventricle has a thicker wall and why?
the left, because it pumps out to the whole body whereas the right only pumps to the lungs