Surface Anatomy Flashcards
Costal Margin
The visible edge of the rib cage that extends down laterally from the midline. Marks the separation between thorax and abdomen.
Manubrium and Xyphoid Process
The tip of the manubrium forms the sternal notch. The base of the manubrium meets the zyphoid process to form the sternal angle or angle of Louis.
These structures, along with the clavicles, form the base of the surface thoracic projection.
Interspaces between ribs are numbered for. . .
The superiorly positioned rib
The tips of the lung extend. . .
superiorly to the clavicles.
The apex of the heart usually resides in
The left, 5th intercostal space
Anterior Superior Iliac Spine
Bony prominences of the pelvis which sticks out and defines the wall of the abdomen when lines are imagined between the lateral-most points of the costal margin and the ASIS.
People will often rest their hands upon these prominences.
Pubic tubercles
Extension of the pubic rami, inferiorly and medially to the anteror abdomen.
Inguinal Ligaments
A line between the ASIS and the tubercles creates an outline of the abdominal cavity’s nesting site within the pelvis. The inguinal ligaments which form a boundary of the pelvis and lower limb are deep to these surface lines.
Boundaries of the abdomen
The xyphoid and costal margin (superior, zyphiod process)
anterior superior iliac spine and pubic tubercles (inferior, pubic synthesis)
Umbilicus line
An axial plane through the umbilicus rests upon the iliac crest of the pelvis and the tip of the L5 vertebra
Sections of the surface abdomen
Abdominal surface quadrants
Abdominal Hexagon with sections
Midclavicular lines
Lines from the middle of the clavicle can be extended down through the thorax and abdomen to intersect with the midpoint of the inguinal ligaments inferiorly.
The subcostal plane
An axial plane positioned at the lateral aspects of the tenth ribs
The intertubercular plane
Axial plane connecting the iliac tubercles, located just anterior and superior to the anterior superior iliac spine.
Greater anterior epigastric and lumbar regions
The posterior faces of the umbilical-line lumbar regions are commonly referred to as. . .
the left and right flanks
Structures that lie deep to the epigastric region
Foregut structures (liver, gall bladder, stomach, pylorus, duodenal valve, pancreas) and the spleen.
The liver lies in the upper right, with the gall bladder just deep to it. The stomach fundus lies in the upper right, with the pylorus and duodenal valve towards the midline. The spleen lies deep to the fundus of the stomach. The head of the pancreas is nested within the pylorus and wrapping of the proximal duodenum, with its tail extending to the hylum of the spleen.
Umbilical plane across gut
The descending colon is on the ___ side and extends to ____.
The descending colon is on the right side and extends to the sigmoid colon and rectum.
The descending colon descends from just distal of the spleen.