BIO 251 questions and answers

BIO 251 questions and answers Question 51 of 75 1.5/ 1.5 Points Under normal circumstances, bronchoconstriction is caused by ________________ and bronchodilation is caused by ________________.  A. Sympathetic nervous system; parasympathetic nervous system  B. Parasympathetic nervous system; sympathetic nervous system  C. Voluntary control; involuntary control  D. Involuntary control; voluntary control  E. None of the above Feedback: Good work; your answer is correct! Question 52 of 75 1.5/ 1.5 Points Which of the following are ways CO2 is transported in the blood?  A. As bicarbonate (HCO3–)  B. As dissolved C02 in plasma  C. As carbaminohemoglobin  D. All of the above  E. None of the above Feedback: Good work; your answer is correct! Question 53 of 75 1.5/ 1.5 Points At a birthday party, a teen decides to inhale some of the helium from a nearby balloon using his mouth. Before the helium gas reaches his right and left lungs, through which order of structures will it flow?  A. Oral cavity to the trachea to the trachea to the nasopharynx to the right and left main bronchi  B. Oral cavity to the oropharynx to the trachea to the right and left main bronchi  C. Oral cavity to the nasopharynx to the trachea to the right and left main bronchi  D. Oral cavity to the right and left main bronchi to the trachea to the oropharynx  E. Oral cavity to the trachea to the larynx to the right and left main bronchi Feedback: Good work; your answer is correct! Question 54 of 75 1.5/ 1.5 Points ____________ is the maximum amount of air one can exhale by force after a normal expiration.  A. Vital capacity  B. Expiratory reserve volume  C. Tidal volume  D. Inspiratory reserve volume  E. Residual volume Feedback: Good work; your answer is correct! Question 55 of 75 1.5/ 1.5 Points How many molecules of oxygen can one molecule of hemoglobin carry?  A. 3  B. 1  C. 5  D. 4  E. 2 Feedback: Good work; your answer is correct! Part 9 of 10 - Part 9 15.0/ 15.0 Points