Present selection >>>

Definition of Trunk
(Scientific name: Proboscis)

From the elephant glossary Section: elephant anatomy

Cross-section of an elephant trunk.
Cross-section of an elephant trunk.

Random Literature
The elephant trunk does NOT have 150 000 muscles, or 120 000 or 40 000 or 20 000 muscles, the elephants trunk only have ONE muscle, named Musculus caninus!

The trunk, or proboscis, is a fusion of the nose and upper lip, although in early fetal life, the upper lip and trunk are separated.

The trunk is elongated and specialised to become the elephant's most important and versatile appendage. It contains up to 150,000 separate muscle fascicles (a bundle of skeletal muscle fibers surrounded by perimysium, a type of connective tissue), with no bone and little fat. These paired muscles consist of two major types: superficial (surface) and internal. The former are divided into dorsals, ventrals, and laterals while the latter are divided into transverse and radiating muscles.

The muscles of the trunk connect to a bony opening in the Skull. The nasal septum is composed of tiny muscle units that stretch horizontally between the nostrils. Cartilage divides the nostrils at the base.[42] As a muscular hydrostat, the trunk moves by precisely coordinated muscle contractions. The muscles work both with and against each other. A unique proboscis nerve – formed by the maxillary and facial nerves – runs along both sides of the trunk.

Internal relevant links on website

Trunk mentioned in The Elephant Database

1 articles about countries in the elephant database match the word Trunk.

18 locations holdings in the elephant database match the word Trunk.

93 elephants in the elephant database match the word Trunk

Reference list Koehl, Dan, (2021). Trunk. Elephant Encyclopedia, available online retrieved 20 September 2021 at (archived at the Wayback machine)

Sources used for this article is among others:

Links about Trunk

External relevant links

Search more on the web for elephant+%22Trunk%22 (Opens in new window and the word elephant+%22Trunk%22 is already submitted into the link, just click on the link for relevant results)

Categories glossary | anatomy |

About this documentThis document was created: 0000-00-00. Latest update: 2021-10-08 09:01:49 included 1279 characters with valid HTML5 Valid CSS

Elephant Encyclopedia and database

Established 1995
Established 2006
Your ip: