Thoracic Cavity My Own Questions Flashcards
Which structure forms the inferior boundary of the chest cavity?
Diaphragm
The manubrium is:
The most superior portion of the sternum
Which component of the sternum serves as an anchor for the diaphragm?
Xiphoid process
The superior thoracic aperture:
Separates the thorax from the root of the neck
True or false
The sternum is covered anteriorly by skin.
True
True or false
The body is the smallest portion of the sternum.
False
The thoracic cavity is enclosed laterally by
12 pairs of ribs
The ____________ is the inferior margin of the thoracic cavity, closed by the diaphragm.
Inferior thoracic aperture (thoracic outlet)
The jugular notch, also known as the suprasternal notch, is located on the ___________ of the sternum
Manubrium
Name the three parts of the sternum
Manubrium, body, xiphoid process
What are the osseous (bony) components of the thoracic skeleton?
Sternum, 12 thoracic vertebrae, ribs
How many pairs of ribs form the lateral boundaries of the chest?
12
Which type of ribs are also known as “true ribs”?
Vertebrosternal ribs
The last two pairs of ribs are known as:
False and floating ribs
The vertebrochondral ribs attach to the sternum:
Indirectly, via the cartilage of preceding ribs
True or false
Vertebrosternal ribs include the first seven pairs of ribs.
True
True or false
Vertebral ribs are considered true ribs.
False
The last two pairs of ribs, which are also called floating ribs, have no anterior attachment to the ____________.
Sternum
Ribs 8 through 10 are known as ____________ ribs, which attach to the cartilage of the preceding rib rather than directly to the sternum.
Vertebrochondral
What are the three types of ribs based on their attachments?
Vertebrosternal, vertebrochondral, vertebral
The thoracic spine connects with which part of the spine superiorly?
Cervical spine
How many vertebrae are in the thoracic spine?
12
Which muscle serves as the primary muscle of respiration?
Diaphragm
The pectoralis major and pectoralis minor muscles are part of which muscle group?
Muscles of the pectoral region
True or false
The diaphragm separates the thoracic cavity from the abdominal cavity.
True
True or false
The intercostal muscles connect each rib to the ones above and below it.
True
The thoracic spine is composed of twelve vertebrae labeled __________.
T1-T12
The ___________ muscle group includes muscles like the pectoralis major and
serratus muscle, which are associated with the upper extremity.
pectoral region
With inhalation, the diaphragm _________ and moves downward.
contracts
List the three groups of muscles in the back and shoulder region.
Superficial back muscles, deep back muscles, muscles in the scapular region
The thoracic cavity is divided into which three major divisions?
Right pleural cavity, left pleural cavity, mediastinum
The pleura has two layers; the __________ layer adheres to the lung, while the
____________ layer lines the chest wall.
Visceral; parietal
Which of the following structures is NOT found in the mediastinum?
Right lung
The inferior mediastinum is further divided into:
Anterior, middle, and posterior regions
True or false
The pleural cavity is a fluid-filled space between the visceral and parietal layers that decreases friction during respiration.
True
True or false
The superior mediastinum is located within the pleural cavities.
False
The ________ pleura layer is adherent to the lung, while the _________ pleura layer lines the inner aspect of the chest wall, diaphragm, and pericardium.
visceral; parietal
The ________ cavity is a thin, fluid-filled space that helps reduce friction between the two pleural layers of each lung.
Pleural
The mediastinum is divided into four regions: superior, anterior, middle, and ___________.
Posterior
The trachea begins as a continuation of which structure?
Larynx
Which of the following is true about the right bronchus?
It is wider, shorter, and more vertical than the left bronchus
The carina is located at the:
Bifurcation of the trachea into the bronchi
The right lung has ________ lobes, while the left lung has _______ lobes.
3; 2
True or false
The trachea descends in front of the esophagus to enter the superior mediastinum.
True
True or false
The respiratory bronchioles are the largest part of the bronchial tree.
False
The region where the trachea divides into the two bronchi is known as the _________.
Carina
The _________ lung is typically larger than the ________ lung because the heart bulges into the mediastinum on the left side.
Right; left
