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Topics > Biology > Human anatomy

	Project title	Gender differences and lung capacity
	Difficulty Level
	Project page	Click here to view this science project
Description
During the breathing cycle, air is inhaled, distributed throughout the lungs, and then exhaled. Lung volume includes a group of measures that quantify the amount of air that is inhaled or exhaled during both normal breathing and forceful breathing. In this experiment, you will be working with two of these measurements: Tidal Volume (TV): volume of air inhaled or exhaled during under normal breathing and Expiratory Reserve Volume (ERV), the amount of residual air that is exhaled under more forceful breathing. Measurements of lung volume will be conducted on a group of participants, from which you will determine if there is a difference in lung capacity between genders.
Instructions preview
Establish your hypothesis: For example - “Boys will have a (higher/lower) lung volume than girls.” GROUPS Divide the participants into two groups: 10 males and 10 females. The individuals of these groups should be of approximately the same age and have no history of asthma, bronchitis, or other health problems. LUNG VOLUME Tidal Volume (TV) * To obtain the participant’s tidal volume, have the individual breath normally into a balloon. * Have the participant pinch off the end of the balloon to prevent air from escaping. * Wrap the string around the balloon once in order to obtain the .....

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