Breathing & Respiration Lab

Master breathing mechanics & respiration with our lab! Understand lung volumes, muscles, and vaping risks.

Pre-Lab Questions: The size of the thoracic cavity is increased by contractions of all of the following musclesexcept the...? diaphragm. external intercostals. pectoralis minor. external oblique. A _ is an instrument to measure air volumes during breathing. flow meter spirometer lung function model capacity meter The _ is the maximum volume of air that can be exhaled after taking the deepest breath possible. tidal volume expiratory reserve volume vital capacity total lung capacity Tidal volume is estimated to be about....? 500 mL. 3,600 mL. 1,200 mL. 4,800 mL A normal resting breathing rate is about _ breaths per minute. 5 - 10 12 - 15 16 - 20 21 - 30 True or False: The contraction of the diaphragm increases the size of the thoracic cavity. True False True or False: Vital capacity is the total of tidal volume, expiratory reserve volume, and residual volume. True False True or False: Vital capacities gradually decrease as a person continues to age. True False Lung Model Demonstration Watch the video below and then answer the questions that follow. In the lung model above, what do the balloons represent? Lungs Thoracic cage Trachea Mouth In the lung model above, what does the clear dome represent? Lungs Thoracic cage Trachea Mouth In the model above, what structure helps to pull air into the "lungs" and push air back out of the "lungs"? The white Y-shaped "bronchi " tubes The blue stopper "epiglottis" The cream colored rubber sheet "diaphragm" The black balloon "lungs" In the video above, what happens to the balloons when the rubber sheeting is pulled downward? The balloons inflate The balloons deflate Nothing happens to the balloons Matching: Match the air volumes with their correct definitions. Expiratory reserve volume Volume in addition to tidal volume that leaves the lungs during forced expiration Functional residual capacity Volume of air remaining in the lungs following exhalation of the tidal volume Inspiratory capacity Maximum volume a person can inhale following exhalation of the tidal volume Inspiratory reserve volume Volume in addition to tidal volume that enters lungs during forced inspiration Residual volume Volume that remains in lungs after the most forceful expiration Tidal volume Volume that enters or leaves lungs during a respiratory cycle Total lung capacity Vital capacity plus residual volume Vital capacity Maximum volume a person can exhale after taking the deepest possible breath When the diaphragm contracts, the size of the thoracic cavity _? decreases. increases. stays the same. We inhale when the diaphragm _? relaxes. stretches. contracts. lengthens. True or False: The ribs are raised by contraction of the external intercostal muscles, which increases the size of the thoracic cavity. True False Respiratory areas of the brain include all of the followingexcept the...? brainstem. pons. medulla oblongata. pineal gland. Breathing rate increases as blood concentrations of...? carbon dioxide increase. carbon dioxide decrease. hydrogen ions decrease. oxygen increase. Forced expiration muscles do NOT include the...? internal intercostal muscles. rectus abdominis muscles. sternocleidomastoid muscles. external oblique muscles. Peripheral chemoreceptors sensitive to low blood oxygen levels are located in the...? heart. aortic arch and carotid arteries. aorta only. carotid arteries only. The principal muscles of inspiration are the _ and the external intercostal muscles. diaphragm external oblique internal intercostal pectoralis major Electronic Cigarettes and Vaping Video Watch the video and then answer the questions that follow. How long did it take humans to realize that traditional cigarettes were really bad for our health? 70 years 700 years 7,000 years 7 million What effects does nicotine have on the body? Increases heart rate Makes you feel more alert Increases blood pressure All of these things True or False: "Popcorn lung" is a disease that causes scarring of the lungs and it can kill you. It is known to have been caused by butter flavorings found in e-cigarettes. True False True or False: Smoking anything (weed, cigarettes, vape flavors, etc.) and inhaling it into your lungs is probably not going to be good for your overall respiratory health. True False