Final answer:
Integrins are the adhesion proteins responsible for maintaining and changing cell shape as well as enabling cell crawling through connections with the cytoskeleton.
Step-by-step explanation:
The orange structures essential for maintaining and changing cell shape and for crawling are adhesion proteins called integrins. Integrins are transmembrane receptors that bind to the extracellular matrix, which can contain structural fibrous proteins such as collagen, and are linked on the inside to the cytoskeleton by proteins like talin. Talin, in turn, binds to actin, and this connection allows for the contractile properties of the cytoskeleton, with the help of myosin II minifilaments, which provide the force for cellular movements.