Thoracic and abdominal walls Flashcards
How many layers of intercostal muscles are there
3 layers
what makes up the floor of the thoracic cavity
the diaphragm
what innervates the diaphragm
the somatic nervous system
what kind of muscle is the diaphragm
skeletla muscle
what lies under the 8th rib on the right
liver
what lies under the 8th rib on the left
spleen
what are the spinal levels of the phrenic nerve
C3, C4, C5
what is the anterior abdominal wall made up of
It is made up of 3 flat muscles these are the external oblique, internal oblique and transverse abdominis
- these different in direction of fibres and depth
what is the rectus sheath
this is when the abdominal muscles continue anteriorly to form a sheet like connective tissue
what is within the rectus sheath
with the rectus sheath there is another abdominal wall muscle Called the rectus abdominis
- this gives rise to the.6 pack
In the 9 quadratic region what are the lines
the vertical lines are the mid clavicular lines
the top horizontal line is the subcostal
- the bottom horizontal line is the transtuberculuar region
where does the subcostal plane pass
it passes through the inferior border of the 10th costal cartilage on each side
where does the transubercular plane pass
it passes through the iliac tubercles
what are the lines called in the 4 quadrant region
vertical is called the median plane
horizontal is called the transumbilical plane as it passes through the umbilicus
what is in the right hypochondriac region
liver
gall bladder
hepatic flexure of the colon
