ABDOMINAL ANATOMY
Abdominal muscles can be divided into 5 major muscles.
Ø THE
RECTUS ABDOMINIS
Ø THE
TRANSVERSUS ABDOMINIS
Ø INTERNAL
OBLIQUE
Ø EXTERNAL
OBLIQUE
Ø ERECTOR
SPINAE
THE RECTUS
ABDOMINIS
In the broad classification of rectus abdominis, it is the muscles
of abdominal, which is the outermost/uppermost layer of abs muscles (generally, where the six
pack lies on). It is a complete package of 8 packs but it often being
misunderstood as a 6 pack, because to immerge out whole 8 pack abs, it requires
lot of gym training. Last 2 packs are just lies above the pubic area, which is rarely
found naked. The rectus abdominis is a long, thin and outer muscle area, whose
fiber run vertically down the body from the chest bones and ends near the pubic
region.
FUNCTION :
flexes the trunk (vertical, lateral and oblique flexes)
REGION : Starts from 5th , 6th
and 7th ribs
Ends at the pubic bone
THE TRANSVERSUS ABDOMINIS
The transversus abdominis muscle is flat and triangular. These muscles are actually come into use, while squeezing,
tightening and sucking your gut inside. It is a thin sheet of muscle
running along the sides of the rectum
abdominis. These muscle fibers run across the
stomach, join into the rear area of the abs and wrap around the sides of the
body. It attaches along the rib cage and into the back muscles.
It is a proven fact that targeting the transversus abs
region, while doing abs workout, results into fast
reduction of belly fat i.e. slim abdomen.
FUNCTION : Compression and squeezing of abdominal muscles.
REGION : Starts from inner cartilage surfaces of
last 6 ribs and goes along the sides of the rectum abdominis.
INTERNAL OBLIQUE
The internal oblique is a diagonal fibers, that fan
out from the pelvis and ribs to the rear of the “eight-pack.” They provide a
layer of support over the transversus. They
are one of the main stabilizers of your trunk. The
depth of these muscles renders them invisible, but they are no less important.
They are one of the main stabilizers of your trunk. In simple words, the
internal oblique create a view of inverted
“ V ” on
your abdomen ( which starts from the
pelvis and ribs to the cartilage of last
3 to 4 ribs at bottom).
FUNCTION : Lateral flexion of the
trunk and provides
Support/stability to gut.
REGION : Starts from the pelvis
Ends at the Cartilage of last 3
to 4 ribs.
EXTERNAL OBLIQUE
These muscles are visible, running diagonally from the
ribs to the front of the pelvis and the
side of your eight-pack i.e. The
external oblique fiber runs from the front of the pelvis and ends back to the
ribs. Secondly, the fiber of the external oblique on one side lines up with the
fiber of the internal oblique on the other side. They are one of the main stabilizers of your trunk. In simple words, the external oblique create a
view of vertical “ V ” on your abdomen.
FUNCTION : Lateral flexion of the
trunk and provides
Support/stability to
gut.
REGION : Anterolateral borders
of lower 8 ribs.
ERECTOR SPINAE
The erector spinae is the muscle group of human back. It
is not just one muscle, but a bundle of muscles and tendons. It is paired and
runs more or less vertically. It is the core to
strong, rock-hard abs. The erector spinae provides stability and strength to
our abdomen.
The erector
spinae muscles group is made up of
ILIOCOSTALIS and LONGISSIMUS. The network of these muscles
group is spread all around the skull, runs down from spine and
finally ends into the pelvis.
THE PELVIS
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