EXAM_SOLUTIONS GUARANTEED SUCCESS 2024/2025 ACADEMIC YEAR
©SOPHIABENNETT 9/3/24 2024/2025
HKIN 191 Final Exam Study Guide with Complete Solutions Three major functions of ventilatory system - Answer️️ -1.Supply O2 required in metabolism 2.Eliminate CO2 produced in metabolism 3.Regulate hydrogen ion concentration [H+] to maintain acid-base balance conducting zone - Answer️️ --Conducts air to respiratory zone -Humidifies, warms, and filters air Respiratory zone - Answer️️ --Exchange of gases between air and blood Hemoglobin - Answer️️ -Hemoglobin molecule consists of globin composed of four subunit polypeptide chains. Each polypeptide contains single heme group with its single iron atom acting as an oxygen "magnet" Myoglobin - Answer️️ -Shuttles O2 from the cell membrane to the mitochondria Sympathetic nerve fibers - Answer️️ -mediate excitation. Parasympathetic activation - Answer️️ -inhibits excitation. Motor unit - Answer️️ -a motor nerve and any muscle fibers it innervates. Slow oxidative fibers - Answer️️ -highly aerobic, don't fatigue easily, don't generate as much force
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