Karteikarten
body functions and anatomy
Karten in diesem Stapel (22)
- 1What is the function of the nasopharynx?provide openings for the rt and lt Eustachian tubes
- 2nasal cavitycontains 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.
- 3Which structure responsible for directing food and liquids into the esophagus during swallowing?epiglottis
- 4Glottisis the space between the vocal cords.
- 5adams applethyroid cartilage is the largest piece of cartilage forming the trachea and has no role in swallowing.
- 6conchaeare bones in the lateral walls of the nasal cavity
- 7What purpose do the cartilaginous rings around the trachea serve?keep the trachea from collapsing during inhalation
- 8Inhaled 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.
- 9What 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. - 10What 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
- 11The main muscle responsible for pulmonary ventilation is:the diaphragm
- 12Which gas is the primary regulator of respiration?carbon dioxide
- 13bicarbonatecarbon dioxide is transported through the bloodstream in the form of bicarbonate, but bicarbonate does not have a role in respiration
- 14When pressures in the lungs drops lower than atmospheric pressure what occurs?air flows into lungs
- 15pneumothoraxresults when air accumulates in the pleural space.
- 16air flows from an area of higher tolower pressure
- 17air flows out of the lungs when pressure in the lungs is the higher thanatmospheric pressure
- 18asthmaa condition in which bronchioles spasm and constrict causing respiratory distress
- 19The primary way oxygen is transported in the blood isin the form of oxyhemoglobin
- 20two forms used to transport carbon dioxidecarbaminoheoglobin and bicarbonate
- 21only 1.5% of the oxygen entering the body is dissolved in ?plasma
- 2298.5% travels the circulatory system in the ofoxyhemoglobin