Anatomy Flashcards
The gall bladder area can be palpated around _________.
the tip of the right 9th costal cartilage
What are the bounds of the abdomen?
Superiorly: cartilages of 7-10th ribs
Inferiorly: inguinal ligament and pelvis
How are the 4 quadrants of the abdomen divided?
By median and transumbilical plane
How is the abdomen divided into 9 regions?
1) Subcostal (inferior borders of 10th costal cartilage/body of L3 vertebra)
2) Intertubular (btwn iliac tubercles and L5 vertebra
3) 2 midclavicular planes
What are the 9 regions of the abdomen?
1) Epigastric
2) Umbilical
3) Pubic/hypogastric
4/5) R/L hypochondrium
6/7) R/L flank
8/9) R/L Groin
What are the organs found in the right upper quadrant of the abdomen?
1) Liver
2) Gall bladder
3) Pylorus of stomach
What are the organs found in the left upper quadrant of the abdomen?
1) Stomach
2) Spleen
What are the organs found in the right lower quadrant of the abdomen?
1) Coecum
2) Appendix
What are the organs found in the left lower quadrant of the abdomen?
1) Descending colon
2) Sigmoid colon
Where is the transpyloric plane?
Lower border of L1
(cuts through pylorus of stomach, tips of 9th costal cartilages)
The linea alba passes in the _____ line to the symphysis pubis and is formed by the fusion of the ______ on both sides.
median line
formed by fusion of rectus sheath of both sides
The superficial facia of the abdominal wall are part of the ______ layer and are composed of:
Subcutaneous tissue:
1) Superficial fatty layer (Camper fascia)
- continuous with superficial fat of rest of body
2) Deep membranous layer (Scarpa fascia)
- blends with deep fascia of upper thigh, penis, scrotum and into perineum as Colle’s fascia
What are the layers of the abdominal wall from superficial to deep (6)?
1) Skin
2) Subcutaneous tissue (superficial fatty, deep membranous)
3) Muscles and aponeurosis
4) Deep fascia
5) Extraperitoneal fat
6) Parietal peritoneum
The abdominal and pelvic cavities are (continuous/separated).
Continuous but arbitrarily separated by pelvic inlet
What separates the the thoracic and abdominal cavities?
Diaphragm
True or false: the upper part of the abdominal extends beneath the thoracic cage.
True
What are the muscles of the anterior abdominal wall?
Paired vertical rectus abdominis muscles within rectus sheath.
What are the muscles of the lateral abdominal wall?
1) External oblique
2) Internal oblique
3) Transversus abdominis
The muscle fibres of the lateral abdominal wall continue anteriorly as _________.
Aponeurotic sheets that contribute to the rectus sheath of the anterior abdominal wall
The muscle fibres of the external oblique muscles extend in what direction?
Inferomedially
Which of the 3 lateral abdominal wall muscles have a free posterior border?
External oblique
How is the inguinal ligament formed?
The lower aponeurotic edge of the external oblique muscle rolls inwards and stretches between the anterior superior iliac spine to the pubic tubercle
What significant structure is found immediately above and lateral to the pubic tubercle?
The superficial inguinal ring (hole in external oblique aponeurosis)
The muscle fibres of the internal oblique muscles extend in what direction?
Inferoposteriorly