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Why Do Joints Pop And Crack?

1,177,061 views

SciShow

Video Language:

  • English

Caption Language:

  • {{captionLanguage | language_name}} ({{captionLanguage}})

Accent:

  • English (US)

Speech Time:

88%
  • 2:08 / 2:24

Speech Rate:

  • 224 wpm - Fast

Category:

  • Education

Tags :

Intro:

Video Vocabulary

important

/imˈpôrtnt/

adjective

Having a big effect on (person, the future).

forming

/fôrm/

verb

To develop; to come into a shape or substance.

pressure

/ˈpreSHər/

noun verb

Force, weight when pressing against a thing. To persuade or force someone to do something.

stretch

/streCH/

noun verb

Making arm, leg muscles longer to ease them. To make something bigger by pulling on it.

knuckles

/ˈnək(ə)l/

noun other verb

part of finger. Rounded bone where the fingers can bend. rub or press with knuckles.

synovial

/səˈnōvēəl/

adjective

of type of joint which is surrounded by thick flexible membrane forming sac into which is secreted viscous fluid that lubricates joint.

trapped

/trap/

adjective verb

Being caught in a trap. To use a device to catch animals or people.

lowering

/ˈlōəriNG/

noun verb

action of moving in downward direction. To move something downward to the ground.

dissolve

/dəˈzälv/

noun verb

act or instance of moving gradually from one image or scene in film to another. To melt into and become part of a liquid.

increases
noun other verb

rise in size, amount, or degree of something. Amount something grows by. become or make greater in size or degree.

friction

/ˈfrikSH(ə)n/

noun

Force preventing motion between bodies in contact.

cracking

/ˈkrakiNG/

adjective verb

excellent. To tell (a joke).

membrane

/ˈmemˌbrān/

noun

Outside covering of a cell.

produced
verb

To make something appear.

dioxide

/dīˈäkˌsīd/

noun

An oxide containing two oxides per molecule.

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