rectus
直筋
解説 Definition
解剖学で、比較的まっすぐ走る筋肉を指す語です。rectus abdominis なら腹直筋、rectus femoris なら大腿直筋のように、部位を示す語と組み合わせて使われます。
Rectus is the name of a straight muscle in the body, especially in the abdomen or around the eye. It is mainly used in medical and anatomy contexts, often as part of a longer name such as "rectus abdominis." Usage note: outside technical contexts, people usually use the full muscle name.
覚え方のコツ Memory Tip
rect- を見たら「まっすぐ」を連想すると覚えやすいです。rectus は単独では腹直筋だけでなく、まっすぐ走る「直筋」全般を指し得ます。rectus abdominis の abdominis が付いて初めて、腹部の直筋、つまり腹直筋だと押さえると混同しにくくなります。
This often appears in anatomy or fitness near words like `abdominis`, `core`, `sit-up`, or `six-pack`. Remember `rectus abdominis` as the full name, and `rectus` as the shortened form. To keep it separate, think: `oblique` is side muscle, but `rectus` runs straight down the front.
例文
The rectus abdominis is the muscle often called the abs.
腹直筋は、よく腹筋と呼ばれる筋肉です。
The rectus femoris is one of the muscles at the front of the thigh.
大腿直筋は、太ももの前面にある筋肉の一つです。
In anatomy, rectus can refer to several straight muscles.
解剖学では、rectus は複数の直筋を指すことがあります。
rectus の類義語・関連語
紛らわしい語
rectus の語源・成り立ち Etymology
rectusは解剖学で使うラテン語 rēctus「まっすぐな」の借用で、もとは regere「まっすぐ導く、正す」に由来し、もともと musculus rectus「直筋」の省略です。rectify や correct と同系で、腹直筋のように『まっすぐ走る筋』だからこの名になったと分かります。
Rectus is a direct borrowing from Latin rectus, meaning "straight." It comes from the verb regere, "to guide straight" or "set right." In anatomy, it was originally short for musculus rectus, "straight muscle," so the name refers to a muscle that runs in a straight line. Related English words include rectify and correct.
外部辞書で調べる
この単語を英単語クイズで覚えよう