Need to know the rectum apart from the kneebone.

A lack of anatomical knowledge dismisses a person from being taken seriously.  It relegates the person into a class of individuals desperately trying to circumvent what is ordinary knowledge with what they make up out of thin air, in the same way a pathological liar would do.  Arterial collagen is not made from fibroblasts.  There are no fibroblasts inside an artery, they reside outside the artery.  The collagenous tunica adventitia is distinct from the collagen laid down by the endothelium and the smooth muscle cells of the smallest to largest arteries.

A home school quackademic can start with at least this much:

There are no fibroblasts in the wall of the normal artery.

"
Tunica intima: Large arteries often have a large subendothelial layer, which grows with age or disease conditions (arteriosclerosis). Both connective tissue and smooth muscle are present in the intima. The border of the intima is delineated by the internal elastic membrane. The internal elastic membrane may not be conspicuous because of the abundance of elastic material in the tunica media.

Tunica media: This is the thickest of the three layers. The smooth muscle cells are arranged in a spiral around the long axis of the vessel. They secrete elastin in the form of sheets, or lamellae, which are fenestrated to facilitate diffusion. The number of lamellae increase with age (few at birth, 40-70 in adult) and with hypertension. These lamellae, and the large size of the media, are the most striking histological feature of elastic arteries. In addition to elastin, the smooth muscle cells of the media secrete reticular and fine collagen fibers and proteoglycans (all not identifiable). No fibroblasts are present. 

Tunica adventitia: This is a relatively thin connective tissue layer. Fibroblasts are the predominant cell type, and many macrophages are also present. Collagen fibres predominate and elastic fibres (not lamellae) are also present. The collagen in the adventitia prevents elastic arteries from stretching beyond their physiological limits during systole. Blood vessels supplying the adventitia and outer media are also present, these are called vasa vasorum ("vessels of the vessels"). (The inner part of the media is supplied from the lumen via pinocytic transport)."

Medical knowledge won't degenerate into a pseudoscience run by infantile egotists if I can help it.  How can these lunatics expect to be taken seriously if they do not know apart the sinotubular junction of the aortic root from the coronary ostia in the sinus from the actual coronary arteries?  Then they proceed to lament that they are unfairly ridiculed.  The ridicule is completely deserved.  Then they push it a step further by saying seaweed lays down in your arteries!