WordNet

ride or float on an inflated tube; "We tubed down the river on a hot summer day"
conduit consisting of a long hollow object (usually cylindrical) used to hold and conduct objects or liquids or gases (同)tubing
electronic device consisting of a system of electrodes arranged in an evacuated glass or metal envelope (同)vacuum_tube, thermionic vacuum tube, thermionic_tube, electron_tube, thermionic_valve
(anatomy) any hollow cylindrical body structure (同)tube-shaped structure
convey in a tube; "inside Paris, they used to tube mail"
place or enclose in a tube
provide with a tube or insert a tube into
the amount that a tub will hold; "a tub of water" (同)tubful
a large open vessel for holding or storing liquids (同)vat
a fleshy underground stem or root serving for reproductive and food storage
type genus of the Tuberaceae: fungi whose fruiting bodies are typically truffles (同)genus Tuber

PrepTutorEJDIC

(金属・ガラス・ゴムなどの)管,筒 / (絵の具・歯みがきなどの)チューブ / 《米》(列車・地下鉄の)トンネル / 《英》地下鉄(《米》subway) / (ラジオ・テレビなどの)真空管(vacuum tube) / (動植物の)管状器官
『おけ』,たらい / 《話》'bath 2 / (また tubful)おけ1杯[の量](の…)《+of+名》 / 《話》のろくてぶかっこうな船;《俗》でぶ,太っちょ
塊茎(ジャガイモのような塊状の地下室茎)

Wikipedia preview

出典(authority):フリー百科事典『ウィキペディア（Wikipedia）』「2015/12/29 07:26:34」(JST)

wiki en

The ischial tuberosity (or tuberosity of the ischium, tuber ischiadicum), also known informally as the sitz bone, or as a pair the sitting bones)^[1] is a large swelling posteriorly on the superior ramus of the ischium. It marks the lateral boundary of the pelvic outlet.

When sitting, the weight is frequently placed upon the ischial tuberosity.^[2] The gluteus maximus provides cover in the upright posture, but leaves it free in the seated position.^[3]

Divisions

The tuberosity is divided into two portions: a lower, rough, somewhat triangular part, and an upper, smooth, quadrilateral portion.

The lower portion is subdivided by a prominent longitudinal ridge, passing from base to apex, into two parts:
- The outer gives attachment to the adductor magnus
- The inner to the sacrotuberous ligament
The upper portion is subdivided into two areas by an oblique ridge, which runs downward and outward:
- From the upper and outer area the semimembranosus arises
- From the lower and inner, the long head of the biceps femoris and the semitendinosus

Additional images

Muscles of the gluteal and posterior femoral regions, with ischial tuberosity highlighted in red.
Right hip bone. External surface.
Right hip bone. Internal surface.
Plan of ossification of the hip bone.
Diameters of inferior aperture of lesser pelvis (female).
Right hip-joint from the front.
The Obturator externus.
Anterior view of the pelvis with the ischial tuberosity labelled in the lower part of the image

Notes

^ Sills, Franklyn (2004). Craniosacral Biodynamics: The Primal Midline and the Organization of the Body (revised, illustrated ed.). Berkeley, CA: North Atlantic Books. p. 99. ISBN 1-55643-390-5.
^ Goossens (2005), pp 895–982
^ Platzer (2004), p 236

References

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

Goossens R, Teeuw R, Snijders C (2005). "Sensitivity for pressure difference on the ischial tuberosity". Ergonomics 48 (7): 895–902. doi:10.1080/00140130500123647. PMID 16076744.
Platzer, Werner (2004). Color Atlas of Human Anatomy, Vol. 1: Locomotor System (5th ed.). Thieme. ISBN 3-13-533305-1.

External links

Anatomy photo:41:st-0204 at the SUNY Downstate Medical Center - "The Female Perineum: Bones"
Anatomy photo:17:os-0114 at the SUNY Downstate Medical Center - "Major Joints of the Lower Extremity: Hip bone (lateral view)"
pelvis at The Anatomy Lesson by Wesley Norman (Georgetown University) (pelvisposterior, pelvislateral, pelvisinside)

This human musculoskeletal system article is a stub. You can help Wikipedia by expanding it.

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Moen MH1, Reurink G2, Weir A3, Tol JL3, Maas M4, Goudswaard GJ3.
British journal of sports medicine.Br J Sports Med.2014 Sep;48(18):1358-63. doi: 10.1136/bjsports-2014-093860. Epub 2014 Jul 18.
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「坐骨結節」

Ischial tuberosity
	Capsule of hip-joint (distended). Posterior aspect. (Ischial tuberosity visible at bottom left.)
	The superficial branches of the internal pudendal artery. (Ischial tuberosity visible at center left.)
Details
Latin	Tuber ischiadicum, tuberositas ischiadica
Identifiers
Gray's	p.235
Dorlands; /Elsevier	t_21/12827506
TA	A02.5.01.204
FMA	17010
	Anatomical terms of bone