Pulley
Pulley
Pulley (pronunciation: /ˈpʊli/) is a simple machine used to change the direction of an applied force, transmit rotational motion, or realize a mechanical advantage in either a linear or rotational system of motion. It is one of the six classical simple machines defined by Renaissance scientists.
Etymology
The word "pulley" is derived from the Old French word 'poulie', and from Medieval Latin 'poliva', which is a short form of 'polea', meaning "pulley".
Anatomy
In the field of Anatomy, a pulley refers to a part of the human body where a tendon passes over a bone. The most notable example of this is the trochlea of the humerus, which acts as a pulley for the biceps muscle of the arm.
Related Terms
- Mechanical advantage: The factor by which a mechanism multiplies the force put into it.
- Simple machine: A basic mechanical device for applying a force.
- Tendon: A flexible but inelastic cord of strong fibrous collagen tissue attaching a muscle to a bone.
- Trochlea: A structure in the arm that acts as a pulley for the biceps muscle.
- Humerus: The bone of the upper arm or forelimb, forming joints at the shoulder and the elbow.
- Biceps: A large muscle that lies on the front of the upper arm between the shoulder and the elbow.
External links
- Medical encyclopedia article on Pulley
- Wikipedia's article - Pulley
This WikiMD dictionary article is a stub. You can help make it a full article.
Languages: - East Asian
中文,
日本,
한국어,
South Asian
हिन्दी,
Urdu,
বাংলা,
తెలుగు,
தமிழ்,
ಕನ್ನಡ,
Southeast Asian
Indonesian,
Vietnamese,
Thai,
မြန်မာဘာသာ,
European
español,
Deutsch,
français,
русский,
português do Brasil,
Italian,
polski