The back or posterior side of a structure. "Dorsum" is the Latin word for the back. Something pertaining to the dorsum is dorsal. The dorsal surface of the hand is the back of the hand, the side opposite the palm. The dorsal surface of the foot is the back of the foot, the side opposite the sole. The dorsal vertebrae are the thoracic vertebrae; they form part of the back. The dorsal roots of the spinal nerves are the back roots, the posterior roots. The opposite of dorsum is ventrum which comes from the Latin "venter" meaning belly. Something that is ventral is oriented toward the belly, toward the front of the body.
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1. The back of the body. 2. The upper or posterior surface, or the back, of any part. SYN: tergum. [L. back]
- d. ephippii SYN: d. sellae.
- d. of foot [TA] the back, or upper surface, of the foot. SYN: d. pedis [TA].
- d. of hand [TA] the back of the hand; surface of hand opposite the palm.
- d. linguae [TA] SYN: d. of tongue.
- d. manus [TA] SYN: d. of hand.
- d. nasi [TA] SYN: d. of nose.
- d. of nose [TA] the external ridge of the nose, looking forward and upward. SYN: d. nasi [TA].
- d. pedis [TA] SYN: d. of foot.
- d. of penis [TA] the aspect of the penis opposite to that of the urethra. SYN: d. penis [TA].
- d. penis [TA] SYN: d. of penis.
- d. scapulae the posterior surface of the scapula.
- d. sellae [TA] a square portion of bone on the body of the sphenoid posterior to the sella turcica or hypophysial fossa. SYN: d. ephippii.
- d. of tongue [TA] the back of the tongue; the upper surface of the tongue divided by the sulcus terminalis into an anterior two-thirds, the pars presulcalis (presulcal part), and a posterior one-third, the pars postsulcalis (postsulcal part). SYN: d. linguae [TA].

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dor·sum 'dȯr-səm n, pl dor·sa -sə
1) the upper surface of an appendage or part
2) BACK (1a){{}}(b) esp the entire dorsal surface of an animal

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1. the back.
2. the upper or posterior surface of a part of the body; for example, of the hand. See also dorsal.

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dor·sum (dorґsəm) gen. dorґsi pl. dorґsa [L.] 1. [TA] the back. 2. the aspect of an anatomical part or structure corresponding in position to the back; posterior, in the human.

Medical dictionary. 2011.

Look at other dictionaries:

  • Dorsum — (pluriel dorsa) est un mot d origine latine initialement utilisé pour désigner le dos d un animal, puis employé par les romains pour décrire une crête montagneuse. Ce terme est utilisé sur Mars pour une ride, une crête ou une structure… …   Wikipédia en Français

  • Dorsum — (plural Dorsa) is a Latin word. In science, it could mean: Dorsum (anatomy), the posterior side of an animal Dorsum (astrogeology), a term used in astrogeology for a ridge Theta Capricorni, a star on the back of the Goat [1] …   Wikipedia

  • Dorsum — (von lat.. Dorsum = Rücken) hat die folgenden Bedeutungen: wissenschaftliche Bezeichnung für den Rücken Dorsum (Planetologie), höhenrückenartige Struktur auf einem Planet oder Satellit eine andere Bezeichnung des Sterns Theta Capricorni …   Deutsch Wikipedia

  • Dorsum — Dor sum, n. [L.] 1. The ridge of a hill. [1913 Webster] 2. (Anat.) The back or dorsal region of an animal; the upper side of an appendage or part; as, the dorsum of the tongue …   The Collaborative International Dictionary of English

  • dorsum — dòrsum m DEFINICIJA anat. 1. leđa 2. gornji dio jezika, leđa jezika ETIMOLOGIJA lat. dorsum: leđa ≃ dorsalis: leđni …   Hrvatski jezični portal

  • dorsum — [dôr′səm] n. pl. dorsa [dôr xE052sə] [L] 1. the back (of an animal) 2. any part corresponding to or like the back [the dorsum of the hand] …   English World dictionary

  • Dorsum — (lat.), 1) Rücken; 2) Rückseite der Hand; 3) am Blatte untere, an Blumentheilen äußere, an Samen die dem Nabel entgegengesetzte Seite …   Pierer's Universal-Lexikon

  • Dorsum — (lat.), Rücken; auch die Rückseite der Hand; an Pflanzen die untere Seite der Blätter …   Meyers Großes Konversations-Lexikon

  • dorsum — n. [L. dorsum, back] The back or upper surface of an organism …   Dictionary of invertebrate zoology

  • Dorsum — Dọrsum [aus gleichbed. lat. dorsum, Gen.: dorsi] s; s, Rücken; Rückseite. Dọrsum lịn|guae: Zungenrücken. Dọrsum ma̱nus: “Handrücken“. Dọrsum na̱si: “Nasenrücken“. Dọrsum pe̱dis [↑Pes]: „Fußrücken“. Dọrsum pe̱nis: Rücken (Oberseite)… …   Das Wörterbuch medizinischer Fachausdrücke

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