18. ____________ occurs in the articular cartilage, and the cartilage of the respiratory tract (nose, larynx, trachea and bronchi) and costal cartilages. a. Hyaline cartilage b. Elastic cartilage c. Fibrocartilage d. None of the above 19. ____________ occurs in the external ear. a. Hyaline cartilage b. Elastic cartilage c. Fibrocartilage d. None of the above 20. ____________ occurs in the epiglottis. a. Hyaline cartilage b. Elastic cartilage c. Fibrocartilage d. None of the above 21. ____________ occurs in the auditory tube. a. Hyaline cartilage b. Elastic cartilage c. Fibrocartilage d. None of the above 22. ____________ predominates in the intervertebral discs. a. Hyaline cartilage b. Elastic cartilage c. Fibrocartilage d. None of the above 23. ____________ predominates in the articular discs of the knee. a. Hyaline cartilage b. Elastic cartilage c. Fibrocartilage d. None of the above 24. ____________ predominates in the pubic symphysis. a. Hyaline cartilage b. Elastic cartilage c. Fibrocartilage d. None of the above 25. ____________ predominates in the mandible. a. Hyaline cartilage b. Elastic cartilage c. Fibrocartilage d. None of the above 26. Hyaline cartilage is surrounded by perichondrium (except in articular cartilage). The perichondrium has an outer fibrous layer, an inner chondrogenic layer and blood vessels. READ CAREFULLY! a. True b. False 27. Fibrocartilage consists of chondrocytes and fibroblasts surrounded by type I collagen and a more rigid extracellular matrix. a. True b. False 28. ____________ is considered an intermediate tissue between hyaline cartilage and dense fibrous tissue. a. Elastic cartilage b. Fibrocartilage c. a and b d. None of the above 29. Chondrocytes produce and maintain the cartilaginous matrix, which consists mainly of collagen and proteoglycans. a. Chondroblasts b. Pericardium c. Chondrocytes d. None of the above 30. A chondroblast is a cell which originates from a mesenchymal stem cell and forms cartilage cells. a. Chondroblasts b. Pericardium c. Chondrocytes d. None of the above