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What else can I help you with?
What is the function of a tendon and how does its structure hint at this function?
A Tendon is basically a connective tissue that is used to connect the muscle to the bone. It is capable of withstanding tension. They are composed of parallel arrays consisting of collagen fibers which are closely packed together. These are held together with other proteins like proteoglycan, decorin and, in compressed regions of tendon, aggrecan.
What is the matrix composed of in cartilage?
Collagen Fibers
What is the function of proteoglycans?
That depends a bit on what your proteoglycans are and where in the body they are. I'm currently working the musculoskeletal field. I'm pretty sure I've seen it suggested that proteoglycans can act as lubricators and allow fibrils within organs such as tendons to slip past each other smoothly. I also know that the large proteoglycan aggrecan is a vital component of hyaline cartilage. It contains lots of negatively charged polysaccharide side chains which attract and retain water. This contributes to cartilage's ability to resist compressive forces.
What is proteoglycans composed of?
A proteoglycan is a protein + glycosaminoglycan a GAG >20 porteoglycans genes So then you have GAG which are the Glycosaminglycan attach to the core protein. This core protein. The repeating core. This means they have glucuronic acid, or iduronic acid with the OOC attached to the sugar. With N-acetylgalactosamine-4-sulphate and they have the SO3 negative charge on them and this makes water/contains water. They are attached to serine on the protein core. Hyalurnan is not made in the same way. and is secreted in the wounds and other things. Aggrecan aggregate has a hyaluronin molecule which is not created in the same way and attaches these proteins and they have keratin and chondronin sulphate. Perican along with the basement membrane, act as a sieve for for the incoming molecules. They mainly have 4 Functions which you need to basically remember They hydrate space for the negative charges. Selective sieves for regulation of molucules trafficing. Major role in chemical signalling between the cells (growth factor signalling, FGF) So basic signaling. And they bind proteisase.
