Procedure: • Pull down the rubber sheet. What happens to the balloons? the human which causes the chest cavity to become . This represents the downward movement of (larger/smaller). This, in turn, causes the human, to expand and fill with air. . Release the rubber sheet. What happens to the balloons? This represents relaxed (inhaling/exhaling), when the chest cavity becomes smaller and the lungs deflate. Note that this is a passive process. What organs do the balloons represent?

Human Anatomy & Physiology (11th Edition)
11th Edition
ISBN:9780134580999
Author:Elaine N. Marieb, Katja N. Hoehn
Publisher:Elaine N. Marieb, Katja N. Hoehn
Chapter1: The Human Body: An Orientation
Section: Chapter Questions
Problem 1RQ: The correct sequence of levels forming the structural hierarchy is A. (a) organ, organ system,...
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Complete the fill in the blank.
Lab 7: Respiratory Systems
Objective:
To understand the microscopic and gross anatomy of the respiratory tract
• To observe and measure the mechanics of breathing, respiratory volumes, and the control of breathing
• To observe and understand the role of buffers in maintaining pH balance in the body
Introduction:
Breathing is an involuntary event. Humans, when they are not exerting themselves, breathe approximately 15 times per minute on
average. The primary function of the respiratory system is to deliver oxygen to the cells of the body's tissues and remove carbon
dioxide, a cell waste product. Oxygen (O₂) diffuses into the cells where it is used for metabolic reactions that produce ATP, a high-
energy compound. At the same time, these reactions release carbon dioxide (CO₂) as a byproduct. CO₂ is toxic in high amounts and
must be eliminated. CO₂ diffuses out of the cells, enters the bloodstream, travels back to the lungs, and is expired out of the body
during exhalation.
The main structures of the human respiratory system are the nasal cavity, the trachea, and the lungs.
Primary
bronchus
• Balloon-and-bell jar
Secondary
bronchus
Tertiary
bronchus
Bronchiole
Terminal
bronchiole
Pulmonary
vein
Alveolar sac
Pulmonary
artery
Alveolar
duct
Alveolus
Nasal
cavity
Pharynx
Larynx
Procedure:
• Pull down the rubber sheet. What happens to the balloons?
the human
, which causes the chest cavity to become.
(larger/smaller). This, in turn, causes the human
Trachea
Diaphragm
Human respiratory system
Exercise 1: Mechanism of Breathing (Balloon-and-Bell Jar Model)
Materials:
Capillary
This represents the downward movement of
to expand and fill with air.
• Release the rubber sheet. What happens to the balloons?
This represents relaxed,
(inhaling/exhaling), when the chest cavity becomes smaller and the lungs deflate. Note that this is a passive process.
What organs do the balloons represent?
Transcribed Image Text:Lab 7: Respiratory Systems Objective: To understand the microscopic and gross anatomy of the respiratory tract • To observe and measure the mechanics of breathing, respiratory volumes, and the control of breathing • To observe and understand the role of buffers in maintaining pH balance in the body Introduction: Breathing is an involuntary event. Humans, when they are not exerting themselves, breathe approximately 15 times per minute on average. The primary function of the respiratory system is to deliver oxygen to the cells of the body's tissues and remove carbon dioxide, a cell waste product. Oxygen (O₂) diffuses into the cells where it is used for metabolic reactions that produce ATP, a high- energy compound. At the same time, these reactions release carbon dioxide (CO₂) as a byproduct. CO₂ is toxic in high amounts and must be eliminated. CO₂ diffuses out of the cells, enters the bloodstream, travels back to the lungs, and is expired out of the body during exhalation. The main structures of the human respiratory system are the nasal cavity, the trachea, and the lungs. Primary bronchus • Balloon-and-bell jar Secondary bronchus Tertiary bronchus Bronchiole Terminal bronchiole Pulmonary vein Alveolar sac Pulmonary artery Alveolar duct Alveolus Nasal cavity Pharynx Larynx Procedure: • Pull down the rubber sheet. What happens to the balloons? the human , which causes the chest cavity to become. (larger/smaller). This, in turn, causes the human Trachea Diaphragm Human respiratory system Exercise 1: Mechanism of Breathing (Balloon-and-Bell Jar Model) Materials: Capillary This represents the downward movement of to expand and fill with air. • Release the rubber sheet. What happens to the balloons? This represents relaxed, (inhaling/exhaling), when the chest cavity becomes smaller and the lungs deflate. Note that this is a passive process. What organs do the balloons represent?
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