University:
Kentucky State University
Course:
BIO 301 | Human Anatomy
Academic year:

2024
Views:

477

Pages:

19
Author:

Apolenajz

The aortic knuckle (red line) • the ‘aortic knuckle’ A.sh The contour of the descending thoracic aorta (yellow line) the aortic window • The arch may also be visible in left anterior oblique views enclosing a pale space, • ‘the aortic window’, • in which shadows of the pulmonary trunk and its left branch may be discerned The aorto-pulmonary window lies between the arch of the aorta and the pulmonary arteries. This is a potential space in the mediastinum where abnormal enlargement of lymph nodes can be seen on a chest X-ray. Aortic Knuckle AK Left Pulmonary Artery (LPA( Ascending Aorta=AA DA atroA gnidnecseD = ON the CT scans You should appreciate the fact that we are evaluating the inferior part of the section (not the superior), therefore, it should be noted right side will be actually on the left side on the scan and vice versa. A.sh Cross section through the thorax at vertebra T5. This section cuts through the anterior, middle and posterior mediastina. You now see the ascending and descending aortae as well pulmonary trunk Exam material A.sh A.sh A.sh Cross section through the thorax at vertebra T3. This section is also through the superior mediastinum but a little lower than the one above. You are looking up and into the aortic arch. Although not labeled, you should be able to make out the openings of the brachiocephalic, left common carotid and left subclavian arteries. A.sh Cross section through the thorax at vertebra T2 This section cuts through the superior mediastinum above the aortic arch Now we are at neck A.sh Exam material Exam material A.sh Exam material

Aortic Knuckle

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