Question | Answer |
Respiration is the chemical event that occurs at the cellular level. True or False | True |
External exchange in respiration involves which circulatory system? | Pulmonary Circuit |
Internal exchange in respiration involves which circulatory system? | Systemic Circuit |
In ventilation, involvement of the air sacs (alveoli) is involved in which exchange, internal or external? | External exchange |
The Nasal Cavities
The Pharynx
The Larynx
The Trachea
The Bronchi
The Lungs
The Bronchioles
The Alveoli | The sequence of the structures in Respiratory Circulation |
Outer layer of the lung | Parietal Pleura |
Inner layer of the lung | Visceral pleura |
One of two fissures that divides the inferior and superior aspects of the right lung. (also called the major fissures or greater fissures) | Oblique fissure |
The _______ lung has both more lobes and segments and is divided into three lobes, an upper, middle, and a lower segment | Right lung. |
The upper fissure that separates the upper from the middle lobe. | Horizontal fissure, |
In this phase of pulmonary ventilation, the diaphragm presses the abdominal organs DOWNWARD and FORWARD. | Inhalation |
Intercostals active only in Exhalation | Exhalation intercostals |
The diaphragm rises and recoils to a resting position during this phase of pulmonary ventilation | Exhalation |
How does the body get the oxygen it needs as conditions change? | Thru stretch receptors, respiratory centers, peripheral chemo-receptors, central chemo-receptors (increase CO2), mechanoreceptors and the hypothalamus. |
The diaphragm contracts (becoming flat) while the intercostal (rib) muscles expand the thorax during this phase of respiration. | Inhalation |
Gas exchange occurs in these structures | alveoli. |
A full vacuum is created within the lungs. True or false. | False, a partial vacuum is created. |
Reduced pressure within the lungs allows air from the atmosphere to enter and fill the lungs during what respiratory phase. | Inhalation |
During ______________The diaphragm relaxes as intercostal muscles that were contracted relax and others contract, causing the thoracic volume to diminish. | Exhalation |
Pressure in the lungs increases during this respiratory phase. | Exhalation. |
Air is expelled back through bronchi, trachea, etc to exit the body during this phase of respiraton. | Expiration |
The real purpose of the Respiratory System is Gas Exchange. T or F | True |
In which circuit does blood rich in oxygen travels to the cells of the body to deliver it and pick up carbon dioxide which it carries away. | the systemic circuit, |
In which circuit does blood mostly depleted of oxygen but full of carbon dioxide goes to the lungs where carbon dioxide is released and oxygen is replenished. | The pulmonary circuit |
Hemoglobin in system arteries is 97% saturated with oxygen, while venous blood is at 27%. T or F | True |
Atmospheric air contains about 21% Oxygen, but when exhaled it contains about 18%. T or F | True |
Carbon dioxide in the atmosphere is well under 1%, but exhaled air contains about what percentage of CO2 ? | 3%. |
carried primarily by hemoglobin in the red blood cells | Oxygen |
Mainly transported as bicarbonate ion dissolved in the blood plasma | Carbon Dioxide |
Although it seems that the body should monitor the level of oxygen in the blood to “know” when to breathe, it is actually the carbon dioxide level rising that gives this cue! True or False | True |
abnormally rapid breathing | Tachypnea |
increased depth and rate of breathing. | Hyperpnea |
abnormally slow or shallow breathing. | Hypopnea |
temporary cessation of breathing, especially during sleep. | Apnea |
a condition in which you start to breathe very fast | Hyperventilation |
also known as hypocarbia, sometimes incorrectly called acapnia, is a state of reduced carbon dioxide in the blood. | Hypocapnea |
breathing at an abnormally slow rate, resulting in an increased amount of carbon dioxide in the blood. | Hypoventilation |
deficiency in the amount of oxygen reaching the tissues. | Hypoxia |
an abnormally low concentration of oxygen in the blood. | Hypoxemia |
Loss of elasticity of the parts and loss of muscular strength and
Weakening of the natural defenses of the lungs against infection | The primary symptoms of Aging in the Respiratory System |