What makes spiders to produce the silk thing from their body?

Question

What makes spiders to produce the silk thing from their body?

What is it made out of?

How do they create them from inside and what happens when they create a web?

How does the form of that material(?) changes?

 

I'm talking about the liquid-ish thing that produces silk(?) think the white thing that forms a web in the end.

Answer 1

Ny,

 

It is the biological mechanism that spiders use for foraging (capturing the prey for their food).

 

It is made of complex protein that spiders can synthesize. 

 

Their physiology and cell biology triggers silk secretion and formation in response to signal such as: sensing a prey around, feeling hungry, chemical reception for an activity and so on.

 

It is an interesting research topic since spider silk is a complicated protein and has many biological applications. 

 

Hope you find this insightful.

 

Answer 2

Please see the following website for a thorough discussion of this topic.

 

https://www.sciencedaily.com/releases/2014/08/140805150836.htm