Spine (zoology)

Spine (zoology)

A spine is a hard, thorny or needle-like structure which occurs on various animals. Animals such as porcupines and sea urchins grow spines as a self-defense mechanism. Spines are often formed of keratin. Other animals with spines are hedgehogs and spiny mice.

In the context of neuroscience, is also used as shorthand for dendritic spines, tiny protusions on the surface of nerve cells that are contacted by presynaptic terminals.


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  • Spine — or Spinal may refer to:Medicine*Vertebral column, commonly known as the backbone **Spinal anaesthesia, a type of regional anaesthetic **Lumbar puncture, a colloquial term for which is a spinal tap ** Spine (journal), a bi weekly peer reviewed… …   Wikipedia

  • Spine (biology) — In biology, spine or spiny may refer to:*Spine (botany), needle like structures in plants *Spine (zoology), needle like structures in animalsSpine may also refer to:*Vertebral column, spine in anatomy, the backbone …   Wikipedia

  • spine´like´ — spine «spyn», noun. 1. the series of small bones down the middle of the back in man and other vertebrates; backbone; spinal column. 2. a) anything like a backbone; long, narrow ridge or support: »the spine of a mountain. b) Figurative. courage or …   Useful english dictionary

  • spine — ► NOUN 1) a series of vertebrae extending from the skull to the small of the back, enclosing the spinal cord and providing support for the thorax and abdomen; the backbone. 2) a central feature or main source of strength. 3) the part of a book… …   English terms dictionary

  • spine — noun 1》 a series of vertebrae extending from the skull to the small of the back, enclosing the spinal cord and providing support for the thorax and abdomen; the backbone. 2》 a central feature or main source of strength. 3》 the part of a book s… …   English new terms dictionary

  • spine — spaɪn n. spinal column of a vertebrate; pointy projection (Zoology); prickle, thorn (Biology); binding of a book; narrow mountain peak, ridge; strength of character, resolution, backbone …   English contemporary dictionary

  • Anatomical terms of location — Standard anatomical terms of location are employed in science which deal with the anatomy of animals to avoid ambiguities which might otherwise arise. They are not language specific, and thus require no translation. They are universal terms that… …   Wikipedia

  • Diamond stingray — Conservation status …   Wikipedia

  • Longtail stingray — may also refer to Dasyatis thetidis or Himantura uarnak. Longtail stingray Conservation status Data Deficient (IUCN 3.1)[1 …   Wikipedia

  • Bipedalism — Bipedality redirects here. For the film, see Bipedality (film). An ostrich, one of the fastest of living bipeds …   Wikipedia

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