Identify the marked area in the following image:

Appeared in: AIIMS Delhi NO- 2019

Explanation

The image shows the thoracic cage, which forms the framework of the chest or thorax.
The highlighted blue structures are the costal cartilages, which are integral parts of the thoracic cage.
Therefore, 'Thoracic' is the correct anatomical term for the general region where these marked structures are located.

Option B: The axillary region refers to the armpit, which is located on the side of the torso, lateral to the area highlighted in the image.
Option C: The mid-axillary line is an imaginary anatomical reference line, not a physical structure. It runs vertically down the side of the body from the center of the armpit.
Option D: This option is incorrect because 'Thoracic' is a valid and appropriate term for the region shown.

Clinical Relevance

Nursing practice connection: This is primarily an exam-oriented knowledge point with limited direct bedside application, so retain Anatomical identification of the thoracic region and its components as background academic context rather than a clinical decision trigger.
Knowledge of thoracic landmarks is crucial for many nursing procedures, including accurate placement of ECG electrodes, auscultation of heart and lung sounds, and identifying the location of chest pain or injury.
The costal margin, formed by the costal cartilages of ribs 7-10, is an important landmark for abdominal examination and identifying organ positions like the liver and spleen.
What if? If a patient has a fracture of the 5th rib at the mid-axillary line, the nurse would know to assess for pain, crepitus, and compromised breathing on the lateral aspect of the chest, not the anterior portion shown highlighted.

How to Approach the Question

First, carefully examine the image to identify the highlighted anatomical structures. Recognize them as the costal cartilages of the rib cage.
Next, read the question, which asks to identify the 'marked area'.
Evaluate each option based on your anatomical knowledge. 'Thoracic' relates to the chest, 'Axillary' to the armpit.
Eliminate options that are clearly incorrect. 'Axillary' and 'Mid-axillary' refer to the side of the body, not the front of the chest.
Select the best-fitting option. Although the marked area is specifically the costal cartilage, 'Thoracic' is the correct general region that encompasses this structure, making it the best choice among the given options.

Concept Tested & Keywords

Concept Tested: Anatomical identification of the thoracic region and its components.
Stem keywords: marked area, image, identify
Lead-in keywords: Identify
Negative lead-in flag: false

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E6 Physiology Ganong 27e Vol 2 Part 3 p. 46-48

E6 Anatomy Applied Ashalatha 4e pp. 453-455, 285-287

Practise the full AIIMS Delhi NO- 2019

Attempt every question from this paper in a timed mock, then review the full solution for each one.