Explanation:

In the ideal lung, the pulmonary artery is anterior to the bronchus. Instead, in the left lung, the pulmonary artery is premium to the bronchus. The mnemonic "RALS" is a useful tool to remember this. RALS represents in the Right lung, the pulmonary artery is Anterior come the bronchus, if in the Left lung, the pulmonary artery is Superior come the bronchus. That is crucial to have the ability to identify these features due to the fact that they will aid us know which lung we are looking at.

You are watching: The left lung lies __________ to the heart.


Explanation:

The left is smaller and also has only two lobes due to the fact that it enables room because that the love in that is cardiac notch. The right lung has three lobes. Remember, if you space looking at the anterior next of a human being (face side), the right lung is on your left side as the observer. 


Explanation:

Air indigenous the sleep or mouth meets the trachea, then the bronchi, then the bronchioles (primary, secondary, tertiary, terminal, then respiratory), then to the alveolar sacs and also ducts, and also finally the alveoli. Each structure after the bronchi is much more branched and also thinner to enable the successive growth of waiting volume to accomplish the alveoli. The an initial part in the respiratory tract where gas exchange occurs is throughout the respiratory tract bronchioles, every structure causing these have been purely for ventilation. However, the alveoli room the main site that gas exchange in the lungs.


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Example concern #15 : identifying Respiratory and Endocrine offal


From where does the diaphragm obtain innervation?


Possible Answers:

C3, 4, and 5 (phrenic nerve)


Vagus nerve


The anterior pulmonary plexus


C3 and C5 only


C4 only


Correct answer:

C3, 4, and also 5 (phrenic nerve)


Explanation:

The diaphragm is innervated by C3-C5 (phrenic nerve). The phrenic nerve obtain innervation from parts of both the cervical plexus and also the brachial plexus. The phrenic nerve consists of motor, sensory, and sympathetic nerve fibers, giving motor it is provided to the diaphragm and also sensation come the central tendon. Pain from the diaphragm deserve to be referred to the shoulder.


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Example inquiry #16 : identify Respiratory and also Endocrine organs


What structure prevents food from entering the airway during swallowing?


Possible Answers:

Pharynx


Larynx


Tongue 


Trachea


Epiglottis


Correct answer:

Epiglottis


Explanation:

The epiglottis is a flaplike cartilaginous structure. During breathing the stands upright, enabling air to go into the larynx. However, ~ above swallowing the epiglottis folds downward to a more horizontal place in order come cover the opening of the windpipe. This movement directs food come the esophagus and prevents food native entering wait passages.


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Example concern #17 : identify Respiratory and Endocrine offal


How countless lobes are in the right and also left lungs? 


Possible Answers:

Right: 3

Left: 3


Right: 2

Left: 3


Right: 2

Left: 2


Right: 3

Left: 2


Correct answer:

Right: 3

Left: 2


Explanation:

The ideal lung is composed of 3 lobes: the exceptional lobe, the center lobe, and the inferior lobe (also recognized as: upper, middle, and also lower lobes). The superior and middle lobes are separated by the horizontal fissure, while the middle and inferior lobes are separated by the tilt fissure. The left lung is made up of 2 lobes, the superior and inferior lobes. This are separated by the oblique fissure. 


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Example inquiry #18 : identifying Respiratory and Endocrine organs


In what body cavity are the lung located?


Possible Answers:

Cranial


Abdominal


Pelvic


Vertebral


Thoracic


Correct answer:

Thoracic


Explanation:

The thoracic cavity has the lungs and also the love (the love is situated within the mediastinum which is the central compartment of the thoracic cavity). The diaphragm forms the floor the the thoracic cavity and also separates it from the an ext inferior abdominopelvic cavity. The abdominopelvic cavity is the biggest cavity in the body. The thoracic cavity is safeguarded by the thoracic wall which is composed of the ribcage and also associated skin, muscle, and fascia. The cranial and vertebral cavities room the dorsal cavities in i m sorry the main nervous system are encased.


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Example concern #20 : identifying Respiratory and also Endocrine guts


The trachea leads to the __________.


Possible Answers:

bronchioles


bronchi


esophagus


pulmonary vessel


stomach


Correct answer:

bronchi


Explanation:

The trachea (windpipe) is a tube that connects the pharynx and larynx come the lungs, allowing for the passage of air. The trachea extends indigenous the larynx and also branches into the two major bronchi. There is a best bronchus and a left bronchus and also these branch into secondary and tertiary bronchi i m sorry branch into smaller tubes, recognized as bronchioles, then eventually to terminal bronchioles. No gas exchange occurs in the bronchi. The first site that gas exchange is the respiratory bronchioles, which lead into alveolar ducts, alveolar sacs, and also alveoli.

At the top the the trachea the cricoid cartilage attaches it come the larynx. The epiglottis closes the opening of the larynx throughout swallowing. 


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Example question #41 : organs


All the the adhering to are true around the appropriate lung except __________.


Possible Answers:

its medial surface lies nearby to the azygos vein


it has actually 3 lobes


it has an oblique and also horizontal fissure


its medial surface lies adjacent to inferior vena cava


its medial surface lies adjacent to the aortic arch


Correct answer:

its medial surface ar lies nearby to the aortic arch


Explanation:

The medial surface of the ideal lung lies adjacent only to heart, inferior and also superior vena cava, azygos vein, and esophagus. The medial surface of the left lung lies surrounding to heart, aortic arch, thoracic arch, and esophagus.


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Example inquiry #42 : organs


Which lung has the lingula?


Possible Answers:

The right


The left


Both


Neither


Correct answer:

The left


Explanation:

The lingula is a tongue shaped portion of the top lobe of the left lung. The left lung only has two lobes (upper and lower), which are split by an oblique fissure. The left lung additionally has a cardiac impression, a cardiac notch, and groves for assorted parts of the aorta and other vasculature.

The ideal lung has three lobes (upper, middle, and lower). The right lung is larger than the left yet it is shorter since the right dome the the diaphragm is higher (due come the liver).


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