WordNet

strike or drive against with a heavy impact; "ram the gate with a sledgehammer"; "pound on the door" (同)ram down, pound
uncastrated adult male sheep; "a British term is `tup" (同)tup
a tool for driving or forcing something by impact
one of two thick muscles running from the sternum and clavicle to the mastoid and occipital bone; turns head obliquely to the opposite side; when acting together they flex the neck and extend the head (同)sternocleidomastoid_muscle, sternocleido mastoideus, musculus_sternocleidomastoideus

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(去勢しない)雄羊 / 破城づち(先に鉄のつめのついたさおで,戸・城壁などを破るのに用いた) / くい打ち機 / (…に)…‘を'激しく打ちつける(打ち込む)《+『名』+『against』(『into』)+『名』》 / …‘に'激突する / (…に)…‘を'詰め込む,押し込む《+『名』+『into』(in, down』)+『名』》 / (…に)激突する《+『against』(『into』)+『名』》

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出典(authority):フリー百科事典『ウィキペディア（Wikipedia）』「2016/01/18 06:30:07」(JST)

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The two sternocleidomastoid branches of the occipital artery (sternocleidomastoid artery) arise directly from the occipital artery and are the initial two branches of this artery. Uncommonly, the lower sternocleidomastoid branch can branch directly from the external carotid.

The lower sternocleidomastoid branch passes inferio-external to the hypoglossal nerve before descending into the substance of the muscle to which its name is derived. The upper sternocleidomastoid branch diverts from the main trunk at the deep border of the proximal end of the posterior digastric muscle belly, coursing with the spinal accessory nerve prior to arborising into the sternocleidomastoid.

References

This article incorporates text in the public domain from the 20th edition of Gray's Anatomy (1918)

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「胸鎖乳突筋枝」

Sternocleidomastoid branches of occipital artery
	The arteries of the face and scalp.
Details
Latin	Rami sternocleidomastoidei arteriae occipitalis
Source	Occipital artery
Identifiers
Dorlands; /Elsevier	r_02/12692073
TA	A12.2.05.033
FMA	49590
	Anatomical terminology; [edit on Wikidata]