Abdomen intro Session 9 Flashcards
Session 9
what is a hernia
weakness in the muscle wall that causes organs to protrude out of the abdomen
role of abdominal muscles (at least 5)
rotate body respiration coughing sneezing increase intra-abdominal pressure for defecation, micturition and childbirth
where is the rectus abdominus located
either side of midline
what are the attachments of rectus abdominus
superiorly: attached to sternum and costal margin
inferiorly: pubic
surrounded by rectus sheath
what r the 3 muscle sheets lateral to rectus sheath
external oblique
internal oblique
transversus abdominus
direction of external oblique layers
down and in
direction of internal oblique fibres
up and out
direction of transversus abdominus
transverse
what contributes to the abdominal aponeurosis
3 muscle layers all form aponeurosis
explain the external oblique aponeurosis
Inferiorly
the lowest most extent of the external oblique muscle is aponeurotic throughout its length
what is the inguinal ligament made of and where does go to and from
made from the aponeurosis of external oblique
from anterior superior iliac spine laterally and the pubic tubercle medially
what r the 6 bony landmarks of the abdomen
- Xiphisternum
- Costal margin
- Iliac Crest
- Anterior Superior Iliac Spine
- Pubic Tubercle
- Pubic Symphysis
how many regions is the abdomen divided into
9
vertical lines to split up the abdomen
mid-clavicular point to mid inguinal point
what is the mid-inguinal point
midway between pubic symphysis and anterior superior iliac spine
transverse lines that separate the 9 anatomical regions of the stomach
upper= subcostal plan (line joining lowest part of costal margins) lower= intertubercular line (between tubercles of the iliac crests)
name the nine regions of the stomach (go left to right and down rows)
right hypochondrium, epigastric, left hypochondrium
right flank, umbilical, left flank
right iliac region, suprapubic/ hypogastric, left iliac region
where is the transpyloric plane of Addison with:
- regards to the regions of the stomach
- regards to the costals
horizontal across epigastrium
tip of 9th costal cartilage