7173125
Description
Flashcards by Anna Lopez, updated more than 1 year ago
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Created by Anna Lopez
almost 8 years ago
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| Question | Answer |
| What is the function of the nasopharynx? | provide openings for the rt and lt Eustachian tubes |
| nasal cavity | contains cilia that filter dust and freign particles from inspired air the mucosa oof the nasal cavity warms and moistens inspired air and the branches of the olfactory nerve (responsible for the sense of smell) penetrate the upper nasal cavity and lead to the brain. |
| Which structure responsible for directing food and liquids into the esophagus during swallowing? | epiglottis |
| Glottis | is the space between the vocal cords. |
| adams apple | thyroid cartilage is the largest piece of cartilage forming the trachea and has no role in swallowing. |
| conchae | are bones in the lateral walls of the nasal cavity |
| What purpose do the cartilaginous rings around the trachea serve? | keep the trachea from collapsing during inhalation |
| Inhaled food or foreign objects are most likely to lodge in which part of the respiratory system? | The right bronchus is slightly wider and more vertical than the left, making it the most likely location for aspirated inhaled food particles and small objects to lodge. |
| What is the purpose of surfactant? | keep alveoli from collapsing it helps reduce surface tension (the force of attraction between water molecules) to keep the alveolus from collapsing as air moves in and out during respiration. It does not facilitate the diffusion of oxygen in the bloodstream. |
| What is one of the purpose of the fluid in the pleural cavity? | lubricate the pleural surfaces to allow them to glide painlessly during lung expansion and contractoin |
| The main muscle responsible for pulmonary ventilation is: | the diaphragm |
| Which gas is the primary regulator of respiration? | carbon dioxide |
| bicarbonate | carbon dioxide is transported through the bloodstream in the form of bicarbonate, but bicarbonate does not have a role in respiration |
| When pressures in the lungs drops lower than atmospheric pressure what occurs? | air flows into lungs |
| pneumothorax | results when air accumulates in the pleural space. |
| air flows from an area of higher to | lower pressure |
| air flows out of the lungs when pressure in the lungs is the higher than | atmospheric pressure |
| asthma | a condition in which bronchioles spasm and constrict causing respiratory distress |
| The primary way oxygen is transported in the blood is | in the form of oxyhemoglobin |
| two forms used to transport carbon dioxide | carbaminoheoglobin and bicarbonate |
| only 1.5% of the oxygen entering the body is dissolved in ? | plasma |
| 98.5% travels the circulatory system in the of | oxyhemoglobin |
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