[Answer] What two components are commonly found in the extracellular matrix that help resist stretching and provide resilience?

Answer: proteins & polysaccharides
What two components are commonly found in the extracellular matrix that help resist stretching and provide resilience?

In biology the extracellular matrix (ECM) is a three-dimensional network consisting of extracellular macromolecules and minerals such as collagen enzymes glycoproteins and hydroxyapatite that provide structural and biochemical support to surrounding cells. Because multicellularity evolved independently in different multicellular lineages the composition of ECM varies between multicellular structures; however cell adhesion cell-to-cell communication and differentiation are common functions of the ECM.

Elastin is the key protein of the extracellular matrix and is the main component of the elastic fibres. Elastin gives the necessary elasticity and resilience required for the persistent stretching involved in breathing known as lung compliance. It is also responsible for the elastic recoil needed.

The band-type of adherens junctions is associated with bundles of actin filaments that also encircle the cell just below the plasma membrane. Spot-like adherens junctions help cells adhere to extracellular matrix both in vivo and in vitro where they are called focal adhesions. The cytoskeletal actin filaments that tie into adherens junctions are contractile proteins and in addition to providing an anchoring function adherens junctions …

The extracellular matrix of bone is laid down by osteoblasts which secrete both collagen and ground substance. These synthesise collagen within the cell and then secrete collagen fibrils. The collagen fibers rapidly polymerise to form collagen strands. At this …

The ECM components investigated were laminin-1 and fibronectin which are natural ECM components and ProNectin F plus (Pro-F) and ProNectin L (Pro-L) which are artificial ECM components …

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