Apodemes

Definition

Apodemes are internal ridges or ingrowths of an exoskeleton in arthropods that function as muscle attachment sites. They play a crucial role in the movement and mechanical support of these animals.

5 Must Know Facts For Your Next Test

1. Apodemes are typically found in arthropods such as insects and crustaceans.
2. They provide leverage for muscle contractions, enhancing movement efficiency.
3. Apodemes are composed primarily of chitin, a strong and flexible polysaccharide.
4. The structure and complexity of apodemes can vary significantly between different species.
5. Damage to apodemes can impair an arthropod's ability to move properly.

Review Questions

Related terms

Exoskeleton: The rigid external covering that provides both protection and support to many invertebrates, including arthropods.

Chitin: A long-chain polymer that forms a major component of the exoskeletons of arthropods and the cell walls of fungi.

Arthropods:

A large phylum of invertebrate animals characterized by segmented bodies, jointed limbs, and exoskeletons made of chitin.