Which of the following is not a function of the respiratory system?
it assists in the synthesis of vasodilators
Which two ligaments extend from the thyroid cartilage to the arytenoid cartilages
vestibular and vocal ligaments
_____ states that the total pressure of a gas mixture is equal to the sum of the partial pressure of it's individual gases
In a healthy person which of the following will have the greatest influence on resistance to pulmonaryairflow
The amount of air in excess of tidal volume that can be inahled with maximum effort is called
inspiratory reserve volume
Deep, rapid breathing often seen in terminal diabetes mellitus is known as what
Tom is in respiratory arrest due to an electrical shock. Why does a good samaritan have up to 4 to 5 minutes to begin CPR and save Tom's life?
a venous reserve of oxygen in Tom's blood
During exercise which of the following directly increases respiratory rate
anticipation of the needs of exercising muscle
Which of the following would slow down gas exchange between the blood and alveolar air
an increase in membrane thickness
The addition of CO2 to the blood generates____ ions in the RBC's, which in turn stimulates RBC's to unload more oxygen
Normally the systemic arterial blood has a PO2 of ____mmHg, a Pco2 of _____ mm Hg and a pH of _____.
95; 40; 7.4
Which of the following enzymes in an RBC breaks H2CO3 down to water and carbon dioxide
In one passage through a bed of systemic blood capillaries, the blood gives up about what percentage of it's oxygen
20% to 25%
Which of the following is the term for a deficiency of oxygen or the inability to utilize oxygen in a tissue
_____ is a lung disease marked by s reduced number of cilia, reduced motility of the remaining cilia, goblet cell hypertrophy and hyersecretion and thick sputum
In _____ the lungs are infected with mycobacterium and produce fibrous nodules around the bacteria, leading to progressive pulmonary fibrosis
Which of these is most likely to result from contact between contaminated fingers and the nasal mucosa
Scuba divers breathe a nitrogen-oxygen mixture rather than pure compressed oxygen in order to avoid
Nitrogen bubbles can form in the blood and other tissues when a scuba diver ascends too rapidly producing a syndrome called
The vagus and glossopharyngeal nerves carry afferent signals from peripheral chemoreceptors to a chemosensitive area in
the medulla oblongata
Mucus plays an important role in cleansing inhaled air. It is produced by ____ of the respiratory tract
Blood banks dispose of blood that has low levels of bisphoglycerate. What would be the probable reason for doing so?
erythrocytes low in BPG do not unload O2 very well
Your breathing rate is 12 breaths/minute; your tidal volume is 500 ml; your vital capacity is 4700ml; and your dead air space is 150 ml. Your alveolar ventilation rate is ___ ml/min