Sophia - Human Biology - Unit 4 Challenge 1.

Sophia - Human Biology - Unit 4 Challenge 1. 1 — Lower Respiratory Tract Determine the role of the lower respiratory system in breathing. In which part of the respiratory system does the exchange of gasses between the bloodstream and air occur? • a.) Trachea • b.) Bronchi • c.) Nose • d.) Lungs 2 — Upper Respiratory Tract Identify the role of the upper respiratory tract in breathing. Which part of the upper respiratory system helps produce the sounds necessary for speech? • a.) Pharynx • b.) Trachea • c.) Larynx • d.) Epiglottis 3 — Respiration and the Respiratory Cycle Identify the basics of respiration and the respiratory cycle. What constitutes a respiratory cycle? • a.) One exhalation, one inhalation and the following exhalation • b.) One inhalation and one exhalation • c.) One inhalation or one exhalation • d.) One inhalation, one exhalation and the following inhalation 4 — Breathing and the Nervous System Determine the basics of breathing. Why would Sally notice that she is breathing faster after going for a run? • a.) Her body is compensating for the slower intake of oxygen by the bloodstream caused by running.