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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

bring together parts to create.

pressure

/ˈpreSHər/

noun verb

Force, weight when pressing against a thing. To apply force to something.

stretch

/streCH/

noun verb

act of stretching one's limbs or body. 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 put into a situation you can't escape from.

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 cause something to end.

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

resistance that one surface or object encounters when moving over another.

cracking

/ˈkrakiNG/

adjective verb

Excellent; done or performed well. To break so lines appear, but it is not in pieces.

membrane

/ˈmemˌbrān/

noun

A thin covering of tissue or of a cell.

produced
verb

To grow something naturally.

dioxide

/dīˈäkˌsīd/

noun

oxide containing two atoms of oxygen in its molecule or empirical formula.

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