KINE 2031 Study Guide - Summer 2018, Comprehensive Midterm Notes - Bt Group, Adenosine Triphosphate, Wireless Access Point
12 Oct 2018
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Document Summary
Respiratory system includes respiratory airways leading into the lungs, lungs & structures of thorax (chest) involved in producing movement of air through airways into and out of lungs. Respiratory airways are tubes that carry air b/t atmosphere and air sacs. Nasal (nose) pharynx (throat) larynx trachea (windpipe) bronchi bronchioles alveoli. Internal/ cellular respiration: metabolic reactions in human cells to produce biochemical energy. Derive atp using o2, food & producing co2 as by-product. External respiration: sequence of gas exchange b. t external environment & cells of body. No muscle is present in walls of bronchioles. Changes in lung volume are brought by changes in thoracic cavity. Diaphragm is a skeletal muscle & is innervated by autonomic nervous system. Diaphragm separates thoracic cavity (chest), containing heart & lungs, from abdominal cavity & performs functions in respiration: diaphragm contracts, volume of thoracic cavity increases & air is drawn into lungs.
