LRA 213 214 Study Week 1 TEST (27 QUESTIONS FULLY SOLVED), Exams of Biology

Download LRA 213 214 Study Week 1 TEST (27 QUESTIONS FULLY SOLVED) and more Exams Biology in PDF only on Docsity! LRA 213/214 Study Week 1 TEST (27 QUESTIONS FULLY SOLVED & UPDATED) What are the 3 sections of the chest? - answer bony thorax, respiratory system proper, and mediastinum. What are the sections of the sternum? Where are they? - answer The superior portion is the manubrium, the large center portion is the body, and the smaller inferior portion is the xiphoid process. The vertebral prominins is at the level of? - answer seventh cervical vertebrae (C7) Parts of the respiratory system? - answer pharynx, trachea, bronchi, and lungs. Where and what is the epiglottis? - answer The upper portion projects upward behind the tongue and acts as a lid for the slanted opening of the larynx. During the act of swallowing, the epiglottis flips down and covers the laryngeal opening, preventing food and fluid from entering the larynx and bronchi. The diaphragm is divided into 2 sections - answer hemidiaphragms and is domed What happens at the level of the pharynx? - answer Serves as a passageway for food and fluids as well as air. Where are the apices of the lungs located? - answer Extend up into the lower neck area to the level of T1 (first thoracic vertebra). Chest x rays are the most commonly repeated Xray? - answer True What is the landmark for an AP chest? - answer jugular notch What organ is highly vascular and very sensitive? - answer Thyroid What do the rings of cartilage of the trachea do? - answer Keep the airway open by preventing the trachea from collapsing during expiration. What do the alveoli do? - answer Oxygen and carbon dioxide are exchanged in the blood through the thin walls How many ribs should you see on a chest x ray? - answer 10 During expiration what do the lungs do? - answer The diaphragm relaxes and returns to its domelike shape, and air is forced out of the lungs. In general, chest radiography uses ______________, described as_______________, with, more shades of grey. - answer low contrast; long-scale contrast