Last Updated
：2025/12/06
external oblique muscle
Noun
(anatomy)
A
flat
muscle
on
each
side
that
form
the
outer
layer
of
the
lateral
walls
of
the
abdomen,
that
have
aponeuroses
extending
medially
to
ensheathe
the
rectus
muscles
and
fusing
in
the
midventral
line
in
the
linea
alba,
and
that
act
to
compress
the
abdominal
contents
and
to
assist
in
expelling
the
contents
of
various
visceral
organs
(as
in
urination,
defecation,
parturition,
and
expiration).
Japanese Meaning
外腹斜筋：腹部の側面に存在する平坦な筋肉で、腹壁の外側層を形成する。筋膜が内側に延びて腹直筋を覆い、正中線（白線）で融合しており、腹部内容物を圧迫する作用や、排尿、排便、分娩、呼気などの際に内臓の内容物を排出するのを補助する役割を担う
Sense（1）
(anatomy)
A
flat
muscle
on
each
side
that
form
the
outer
layer
of
the
lateral
walls
of
the
abdomen,
that
have
aponeuroses
extending
medially
to
ensheathe
the
rectus
muscles
and
fusing
in
the
midventral
line
in
the
linea
alba,
and
that
act
to
compress
the
abdominal
contents
and
to
assist
in
expelling
the
contents
of
various
visceral
organs
(as
in
urination,
defecation,
parturition,
and
expiration).
（ plural ）
Quizzes for review
(anatomy) A flat muscle on each side that form the outer layer of the lateral walls of the abdomen, that have aponeuroses extending medially to ensheathe the rectus muscles and fusing in the midventral line in the linea alba, and that act to compress the abdominal contents and to assist in expelling the contents of various visceral organs (as in urination, defecation, parturition, and expiration).
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See correct answer
external oblique muscle
During the physical exam, the physician noted tightness in the patient's external oblique muscle, which contributed to her lower back pain.
See correct answer
During the physical exam, the physician noted tightness in the patient's external oblique muscle, which contributed to her lower back pain.
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