How is mid axillary line described?
The midaxillary line is an imaginary line that physicians use as a reference point during a variety of procedures, such as a thoracentesis or an ECG. It passes from the armpit, downwards, dividing the body into its anterior and posterior halves.
What is a Midclavicular line?
Medical Definition of midclavicular line : an imaginary line parallel to the long axis of the body and passing through the midpoint of the clavicle on the ventral surface of the body.
What are the surface projections of the thoracic contents?
The surface projections of the heart represent points on the thoracic wall that map out the outline and valves of the heart. These include four borders (superior, right, inferior, left) and four valves (left atrioventricular, right atrioventricular, aortic, pulmonary).
How do you identify intercostal spaces?
From the angle of Louis, move your fingers to the right and you will feel a gap between the ribs. This gap is the 2nd Intercostal space. From this position, run your fingers downward across the next rib, and the next one. The space you are in is the 4th intercostal space.
Where is the Midclavicular line?
An imaginary median line used to describe locations on the trunk. At its top, it passes through the midpoint of the clavicle, and on a male, it runs just medial to the nipple.
Why is Midclavicular line important?
Clinical significance It is useful for evaluating hepatomegaly and identifying heart sounds, as well as finding the gallbladder. (The gallbladder is at the intersection of the midclavicular line and the transpyloric plane.)
Where is Midclavicular line located?
What are the surface landmarks on the thorax?
The sternal angle is often visible and palpable and serves as an important surface landmark for several underlying structures….Figure 2-1.
| Vertebral Level | Landmark |
|---|---|
| T7 | Inferior angle of scapula |
| T8 | Caval hiatus of diaphragm |
| T9 | Xiphoid process |
| T10 | Esophageal hiatus of diaphragm |
What are the surface markings of heart?
The heart has five surfaces: base (posterior), diaphragmatic (inferior), sternocostal (anterior), and left and right pulmonary surfaces. It also has several margins: right, left, superior, and inferior: The right margin is the small section of the right atrium that extends between the superior and inferior vena cava.
What is the fifth left intercostal space at the midclavicular line?
apex
The apex (the most inferior, anterior, and lateral part as the heart lies in situ) is located on the midclavicular line, in the fifth intercostal space. It is formed by the left ventricle.
What does the sternal angle mark?
The sternal angle is an important clinical landmark for identifying many other anatomical points: It marks the point at which the costal cartilages of the second rib articulate with the sternum. This is particularly useful when counting ribs to identify landmarks as rib one is often impalpable.
Where does the midaxillary line cross the midclavicular line?
This line crosses the mid-clavicular line at the sixth, and the midaxillary line at the eighth rib.
Where does the sternoclavicular line begin and end?
On the right side the line begins at the sternoclavicular articulation and runs downward and medialward to the midpoint of the junction between the manubrium and body of the sternum.
What is the direction of the sternoclavicular tendon?
On the right side, it goes downwards and medially from the right sternoclavicular joint to the midpoint of the sternal angle, and after that descends vertically up to the midpoint of the xiphisternal joint.