TOTW #19 - HISTOLOGY Start QuizPage 1 of 23 Langerhans cells mainly function as: Mechanoreceptors Thermoreceptors Antigen-presenting cells Stem cells Page 2 of 23 Apocrine sweat glands are located: On the lips On the palms On the back In the axilla Page 3 of 23 Type II pneumocytes: Secrete surfactant Secrete mucus Carry out gaseous exchange Form the blood-air barrier Page 4 of 23 Where are Peyer’s patches located? Duodenum Jejunum Ileum Colon Page 5 of 23 Which salivary gland is wrongly matched with the type of fluid it produces? Submandibular- seroumucous fluid Parotid- serous fluid Sublingual - mucous fluid Sublingual - seromucous fluid Page 6 of 23 Which of the following cell types is responsible for producing collagen fibers in connective tissue? Fibroblasts Adipocytes Osteocytes Chondrocytes Page 7 of 23 Which type of epithelium is found lining the urinary bladder? Simple squamous epithelium Stratified squamous epithelium Transitional epithelium Simple cuboidal epithelium Page 8 of 23 What is the primary function of goblet cells in the respiratory epithelium? Absorption of nutrients Secretion of mucus Phagocytosis of pathogens Production of hormones Page 9 of 23 Which structure in the kidney is responsible for the filtration of blood to form urine? Renal tubule Glomerulus Loop of Henle Collecting duct Page 10 of 23 Which type of cartilage is found in the external ear and epiglottis? Hyaline cartilage Fibrocartilage Elastic cartilage Dense irregular cartilage Page 11 of 23 A 45-year-old male presents with difficulty breathing and a chronic cough. He has a history of smoking for 20 years. On examination, decreased breath sounds are noted on the left side of the chest. A chest X-ray reveals a collapsed left lung. Histological examination of a biopsy specimen from the affected lung shows stratified squamous epithelium without cilia and abundant keratinization. What is the most likely diagnosis? Small cell carcinoma Squamous cell carcinoma Adenocarcinoma Large cell carcinoma Page 12 of 23 A 60-year-old female presents with abdominal pain and jaundice. Imaging studies reveal the presence of gallstones obstructing the common bile duct. An ERCP is performed, and a biopsy of the bile duct is taken. Histological examination of the biopsy specimen shows columnar epithelium with goblet cells and lamina propria containing lymphoid aggregates. What is the likely diagnosis? Cholangitis Cholelithiasis Cholangiocarcinoma Choledocholithiaisis Page 13 of 23 Which structures make up the brush border? Secretory granules Basal anealing Microvilli Cilia Page 14 of 23 Which type of collagen is the main part of the basal lamina? Type I collagen Type II collagen Type III collagen Type IV collagen Page 15 of 23 How to stain for reticular fibers? Aldehyde fuscin staining Silver impregnation Sudan red staining Feulgen's method Page 16 of 23 Which type of muscle tissue makes up the trachealis muscle? Myoepithelium Smooth muscle Striated muscle Mixture of smooth and striated muscle Page 17 of 23 All but one of following cell adhesions are common in the intercalated disc. Which is not common? Zonula occludens Fascia adherens Gap junction Desmosome Page 18 of 23 When preparing tissue for histopathology and light microscopy, which of the following steps precedes clearing with an organic solvent? Embedding Fixation Staining Dehydration Page 19 of 23 Which of the following is composed of smooth muscle? Tongue Heart Walls of visceral organs Gluteal muscle Page 20 of 23 Which leukocyte is the SECOND most abundant in a blood slide? Neutrophils Lymphocyte Basophil Eosinophil Page 21 of 23 Which of the following is not a key component of seminal fluid? Fructose Fibrinogen Glycogen Prostaglandin Page 22 of 23 A glucagonoma is a malignant tumor consisting of what cells? A or α cells B or β cells Chromophils D or δ Page 23 of 23 Identify the type of tissue shown. Does it belong to an adult or a child? Muscle tissue, child Bone tissue, child Muscle tissue, adult Bone tissue, adult Multiple Authors | WebsiteTOTW #26 - MicrobiologyTOTW #25 - PsychiatryTOTW #24 - BiochemistryTOTW #23 - Haematology Previous Post A 23-year-old with right lower quadrant abdominal pain Next Post My personal journey with mindfulness