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Cross Sectional Anatomy > Thoracic Cavity My Own Questions > Flashcards

Thoracic Cavity My Own Questions Flashcards

1
Q

Which structure forms the inferior boundary of the chest cavity?

A

Diaphragm

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2
Q

The manubrium is:

A

The most superior portion of the sternum

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3
Q

Which component of the sternum serves as an anchor for the diaphragm?

A

Xiphoid process

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4
Q

The superior thoracic aperture:

A

Separates the thorax from the root of the neck

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5
Q

True or false

The sternum is covered anteriorly by skin.

A

True

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6
Q

True or false

The body is the smallest portion of the sternum.

A

False

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7
Q

The thoracic cavity is enclosed laterally by

A

12 pairs of ribs

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8
Q

The ____________ is the inferior margin of the thoracic cavity, closed by the diaphragm.

A

Inferior thoracic aperture (thoracic outlet)

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9
Q

The jugular notch, also known as the suprasternal notch, is located on the ___________ of the sternum

A

Manubrium

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10
Q

Name the three parts of the sternum

A

Manubrium, body, xiphoid process

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11
Q

What are the osseous (bony) components of the thoracic skeleton?

A

Sternum, 12 thoracic vertebrae, ribs

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12
Q

How many pairs of ribs form the lateral boundaries of the chest?

A

12

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13
Q

Which type of ribs are also known as “true ribs”?

A

Vertebrosternal ribs

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14
Q

The last two pairs of ribs are known as:

A

False and floating ribs

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15
Q

The vertebrochondral ribs attach to the sternum:

A

Indirectly, via the cartilage of preceding ribs

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16
Q

True or false

Vertebrosternal ribs include the first seven pairs of ribs.

A

True

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17
Q

True or false

Vertebral ribs are considered true ribs.

A

False

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18
Q

The last two pairs of ribs, which are also called floating ribs, have no anterior attachment to the ____________.

A

Sternum

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19
Q

Ribs 8 through 10 are known as ____________ ribs, which attach to the cartilage of the preceding rib rather than directly to the sternum.

A

Vertebrochondral

20
Q

What are the three types of ribs based on their attachments?

A

Vertebrosternal, vertebrochondral, vertebral

21
Q

The thoracic spine connects with which part of the spine superiorly?

A

Cervical spine

22
Q

How many vertebrae are in the thoracic spine?

A

12

23
Q

Which muscle serves as the primary muscle of respiration?

A

Diaphragm

24
Q

The pectoralis major and pectoralis minor muscles are part of which muscle group?

A

Muscles of the pectoral region

25
Q

True or false

The diaphragm separates the thoracic cavity from the abdominal cavity.

A

True

26
Q

True or false

The intercostal muscles connect each rib to the ones above and below it.

A

True

27
Q

The thoracic spine is composed of twelve vertebrae labeled __________.

A

T1-T12

28
Q

The ___________ muscle group includes muscles like the pectoralis major and
serratus muscle, which are associated with the upper extremity.

A

pectoral region

29
Q

With inhalation, the diaphragm _________ and moves downward.

A

contracts

30
Q

List the three groups of muscles in the back and shoulder region.

A

Superficial back muscles, deep back muscles, muscles in the scapular region

31
Q

The thoracic cavity is divided into which three major divisions?

A

Right pleural cavity, left pleural cavity, mediastinum

32
Q

The pleura has two layers; the __________ layer adheres to the lung, while the
____________ layer lines the chest wall.

A

Visceral; parietal

33
Q

Which of the following structures is NOT found in the mediastinum?

A

Right lung

34
Q

The inferior mediastinum is further divided into:

A

Anterior, middle, and posterior regions

35
Q

True or false
The pleural cavity is a fluid-filled space between the visceral and parietal layers that decreases friction during respiration.

A

True

36
Q

True or false
The superior mediastinum is located within the pleural cavities.

A

False

37
Q

The ________ pleura layer is adherent to the lung, while the _________ pleura layer lines the inner aspect of the chest wall, diaphragm, and pericardium.

A

visceral; parietal

38
Q

The ________ cavity is a thin, fluid-filled space that helps reduce friction between the two pleural layers of each lung.

A

Pleural

39
Q

The mediastinum is divided into four regions: superior, anterior, middle, and ___________.

A

Posterior

40
Q

The trachea begins as a continuation of which structure?

A

Larynx

41
Q

Which of the following is true about the right bronchus?

A

It is wider, shorter, and more vertical than the left bronchus

42
Q

The carina is located at the:

A

Bifurcation of the trachea into the bronchi

43
Q

The right lung has ________ lobes, while the left lung has _______ lobes.

A

3; 2

44
Q

True or false

The trachea descends in front of the esophagus to enter the superior mediastinum.

A

True

45
Q

True or false

The respiratory bronchioles are the largest part of the bronchial tree.

A

False

46
Q

The region where the trachea divides into the two bronchi is known as the _________.

A

Carina

47
Q

The _________ lung is typically larger than the ________ lung because the heart bulges into the mediastinum on the left side.

A

Right; left

Cross Sectional Anatomy (16 decks)

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