5 Questions
What is the function of the insect integument?
Protection for internal organs
Which layer of the cuticle is outermost and lacks chitin?
Epicuticle
What does the epicuticle consist of?
Lipid and protein, but no chitin
Which layer of the cuticle contains chitin?
Procuticle
What is the main function of the basement membrane in the insect integument?
Provide structural support and attachment for the epidermis
Study Notes
Insect Integument
- The insect integument provides protection, support, and maintains internal environment.
- It is composed of three main layers: epicuticle, exocuticle, and endocuticle.
Cuticle Layers
- The epicuticle is the outermost layer, lacking chitin.
- It consists of a thin, impermeable layer of lipids and waxes.
Chitin-containing Layer
- The procuticle (also known as exocuticle and endocuticle) is the layer that contains chitin.
- Chitin is a polysaccharide that provides strength and flexibility to the cuticle.
Basement Membrane
- The basement membrane is a thin, acellular layer that separates the epidermis from the hemocoel.
- Its main function is to provide a substrate for muscle attachment and maintain the position of the epidermis.
Test your knowledge on the insect integument and its functions, including protection of internal organs, regulation of water loss, and providing sensory input. This quiz covers topics from Chapter 16 in Chapman's book.
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