Vascular Disease 1: Atherosclerosis MDSA30160
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Questions and Answers

What is the main focus of the learning objectives outlined in the text?

  • Effects of atherosclerosis on different organs (correct)
  • Genetic factors leading to atherosclerosis
  • Development of atherosclerosis in blood vessels
  • Causes of 'vulnerable/unstable' plaque in atherosclerosis

Which statement best describes the incidence of atherosclerosis mentioned in the text?

  • It is most common in early years and decreases with age
  • It is extremely uncommon in the Western world
  • It is almost universal in middle and old age (correct)
  • It is equally prevalent across all age groups

What defines atherosclerosis as a systemic but patchy disease?

  • It affects large and medium-sized arteries
  • It leads to complete blockage of blood vessels
  • The lesions contain variable proportions of accumulated lipid and fibrosis (correct)
  • It is caused by environmental stressors only

What makes atheroma different from 'vulnerable/unstable' plaque?

<p>Presence of inflammation (C)</p> Signup and view all the answers

What are the two modes of failure discussed regarding blood vessels in the text?

<p>Blockage and narrowing (D)</p> Signup and view all the answers

Why is atherosclerosis described as a complex, multifactorial disease in the text?

<p>Involvement of multiple genetic and environmental factors (A)</p> Signup and view all the answers

What does the term 'atheroma' refer to based on its Greek origin mentioned in the text?

<p>'Porridge' (C)</p> Signup and view all the answers

Why does the text describe atherosclerosis as incompletely understood?

<p>Lack of full comprehension regarding its etiology and pathogenesis (C)</p> Signup and view all the answers

Which risk factor for atheroma is considered a major modifiable risk factor according to the text?

<p>Dyslipidaemia (A)</p> Signup and view all the answers

In the context of atheroma risk factors, what is the relative risk associated with cigarette smoking in causing ischemic heart disease (IHD)?

<p>2 (B)</p> Signup and view all the answers

Which type of arteries are mainly affected by the process of arterial wall thickening and loss of elasticity mentioned in the text?

<p>Small arteries/arterioles (D)</p> Signup and view all the answers

What is the major fixed constitutional risk factor for atheroma formation mentioned in the text?

<p>Genetics – family history (D)</p> Signup and view all the answers

Which part of the artery consists of smooth muscle cells and elastic fibers according to the normal arterial structure described in the text?

<p>Media (A)</p> Signup and view all the answers

What is the primary role of the intima layer of the artery based on the normal arterial structure mentioned in the text?

<p>Endothelium and sub-endothelial connective tissue (A)</p> Signup and view all the answers

In which type of arteries does atheroma formation usually start, according to the content provided?

<p>&gt;2mm diameter arteries only (D)</p> Signup and view all the answers

Which laboratory marker of chronic inflammation is associated with an increased risk of atheroma formation according to the text?

<p>'C-reactive protein' (A)</p> Signup and view all the answers

What is the primary material found in a fatty streak?

<p>Intracellular lipid (D)</p> Signup and view all the answers

What characterizes an advanced or raised fibrolipid plaque?

<p>Lipid, collagen, and smooth muscle (C)</p> Signup and view all the answers

What is the key role of the endothelium in atherosclerosis pathogenesis?

<p>Border control between vascular and extravascular spaces (D)</p> Signup and view all the answers

What are the systemic insults that can lead to endothelial injury?

<p>Chemical and metabolic (D)</p> Signup and view all the answers

Which cells are involved in the lesion progression of atherosclerosis?

<p>Macrophages and endothelium (C)</p> Signup and view all the answers

What is the endothelial 'stickiness' associated with in atherosclerosis?

<p><strong>Platelets</strong> (B)</p> Signup and view all the answers

Which of the following is NOT involved in cellular recruitment in atherosclerosis?

<p><strong>Myocytes</strong> (B)</p> Signup and view all the answers

What is the earliest sign of endothelial damage according to the text?

<p>Reduced Nitric Oxide (A)</p> Signup and view all the answers

Which of the following is NOT a response of the vessel wall to injury as per the text?

<p>Entry of LDLs (C)</p> Signup and view all the answers

What is the effect of IL-1 recruiting T-cells according to the text?

<p>Affects myocyte functioning and apoptosis (C)</p> Signup and view all the answers

Which process involves impaired lipid recycling leading to foam cell formation?

<p>Inflammation (C)</p> Signup and view all the answers

What contributes to neo-intimal myocytes according to the text?

<p>Proliferation of Myointimal cells (D)</p> Signup and view all the answers

Which factor leads to increased LDL permeability according to the text?

<p>Endothelial damage (B)</p> Signup and view all the answers

What is a consequence of acute plaque changes according to the text?

<p>Aneurysm formation (A)</p> Signup and view all the answers

What does enhanced expression of cellular adhesion molecules on endothelium lead to?

<p>Entrance of platelets into vessel wall (B)</p> Signup and view all the answers

What cells migrate into the intima from blood in the context of atheroma pathogenesis?

<p>Macrophages (C)</p> Signup and view all the answers

Which cells in the intima synthesize extracellular matrix, including collagen?

<p>Smooth muscle cells (A)</p> Signup and view all the answers

What causes further damage in atherosclerosis by accumulating and oxidizing within the vessels?

<p>LDL cholesterol (A)</p> Signup and view all the answers

From which source can intimal smooth muscle cells be recruited in atheroma formation?

<p>Circulating precursors (C)</p> Signup and view all the answers

What is the distinctive phenotype of intimal smooth muscle cells compared to medial smooth muscle cells in atheroma development?

<p>Proliferative, synthetic, noncontractile (C)</p> Signup and view all the answers

What type of cells engulf lipid and form foam cells during the initial stages of atheroma formation?

<p>Macrophages (D)</p> Signup and view all the answers

What do oxidized lipids primarily contribute to within the vasculature during atherosclerosis?

<p>Further damage and progression of atherosclerosis (D)</p> Signup and view all the answers

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