Anatomy Quest Respiratory System
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47 terms
Terms | Definitions |
|---|---|
 Cells Need... | Oxygen |
| Repriatory system.... | provides oxygen and gets rid of CO2 |
| alveoli | little sacks for gas exchange |
| Functions of Respiratory System | 1)provides large area for gas exchange between air and blood 2)moves air to and from alveoli 3)protects resp. surfaces from dehydration and temp change 4)produces sound 5)provides olfactory sensation |
| CO2 alters.... | pH of body |
| upper resp. tract structures go... | down to(not including) larynx |
| lower resp. tract structures.... | begins at larynx to alveoli |
| Conducting portion are the... | nasal cavity, larynx, trachea, bronci, large bronchioles |
| Respiratory portion are the... | small bronchioles, alveoli-->gas exchange |
| mucus lines airways to.. | capture foregin things |
| Nasal Cavity | opening in nose |
| nasal vestibule | spaces in nasal tissue |
| nasal septum | divides nasal cavity in 1/2 |
| internal nares | between nasal cavity and naso-pharynx |
| cilia sweep mucus and trapped debris to... | pharynx to be swallowed |
| exposure to some things causes.... | a runny nose |
| role of nasal cavity is... | warm,humidify, and clean air |
| 3 subdivisions of Pharynx | 1)nasopharynx-->internal layers-soft pallet 2)oropharynx-->soft pallet-base of tongue 3)laryngopharynx-->base of tongue-enterance of esophagus |
| glottis | small opening between pharynx and larynx |
| epiglottis | covers glottis during swallowing |
| thyroid cartilage | very large(adams apple) |
| cricoid cartilage | provides support to larynx |
| false vocal cords | upper pair of ligaments that prevent objects from going into glottis |
| true vocal cords | lower pair |
| small muscles insert on thyroid and arytenoid cartilages change... | postion and alter tension |
| air passing through glottis vibrates... | vocal cords |
| trachea | tough flexible tube |
| bronchi | branch off of trachea |
| Bronchioles | no cartalidge and much smooth muscle |
| 150 million______per lung | alveoli |
| lungs... | very light and spongy |
| Right Lung | 3 lobes |
| Left lung | 2 lobes |
| parietal pleura | covers inner surface of body wall |
| visceral pleura | covers outer surface of lung |
| 3 steps of respiratory physiology | 1)pulmonary ventilation=take air in and out of face 2)gas exchange=between blood and inhaled air(external respiration) 3)gas transport=gases moved from lung to capillaries |
| hypoxia | low O2 levels |
| anoxia | no oxygen getting to tissues |
| Pulmonary Ventilation | physical movement of air in and out of lungs |
| blood flow changes through actions of ... | precapillary sphincters |
| airflow changes through actions of... | broncholies |
| medulla oblongata & pons regulate... | respiratory muscles and respiratory rate |
| medulla oblongata & pons respond to... | speech, senses, motions |
| cerebrum control... | respiratory muscles |
| respiratory reflexes... | changes in respiration due to changes to sensory info. |
| Mechanoreceptor responds to changes in... | pressure(volume of lungs) or (arterial BP) |
| chemoreceptor respond to... | chemical changes in blood and CSF |
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