Aponeurosis — Histology Question Bank OmpathStudy

A consolidated Year 1 Histology spot-question bank for the Aponeurosis collection, drawn from eight revision papers, organised by tissue type — cytology, epithelium, connective tissue, cartilage, bone, muscle, nervous tissue, and reproductive/endocrine histology. Tap any answer to reveal it. Cell Organelles & General Cytology Q1: Identify the organelle and its function, name cytoskeletal components, and state three ultrastructural features of hepatocytes Answer: Rough endoplasmic reticulum - synthesis and initial processing of secreted and membrane proteins Cytoskeleton: microtubules, microfilaments, and intermediate filaments Hepatocytes contain abundant rough ER, Golgi apparatus, mitochondria, smooth ER, glycogen, and peroxisomes --- Q2: State two functions of the organelles labelled A and B (2+2 marks) Answer: A — mitochondrion. Two functions: ATP production via oxidative phosphorylation Site of the citric acid (Krebs) cycle B — rough endoplasmic reticulum. Two functions: Synthesis of proteins destined for secretion or membrane insertion Site of ribosome attachment and initial protein folding --- Q3: Identify the type of chromatin labelled A and B; two features of a cell actively synthesizing protein (2+2 marks) Answer: A — heterochromatin (condensed, transcriptionally inactive, seen at the nuclear periphery) B — euchromatin (dispersed, transcriptionally active) Two features of a cell actively synthesizing protein: A large, prominent nucleolus Abundant euchromatin (dispersed chromatin) and well-developed rough endoplasmic reticulum --- Q4: Epithelial type displayed and one site; cell cycle phases (2+2 marks) Answer: Type: keratinized stratified squamous epithelium Distribution: epidermis of the skin (thick skin of the palms and soles) Cell cycle phase for preparation for DNA replication: G1 phase Cell cycle phase for cell division: M phase (mitosis) --- Q5: State two sites where the tissue displayed is found Answer: Wharton's jelly of the umbilical cord Dental pulp of a developing tooth Nucleus pulposus of the intervertebral disc --- Epithelial Tissue Q6: Identify the organ, define metaplasia and its significance here, and name three gastric epithelial cell types with their products Answer: Oesophagus - non-keratinized stratified squamous epithelium, submucosal glands, longitudinal folds, and proximity to the trachea Metaplasia is reversible replacement of one mature cell type by another; columnar metaplasia in Barrett oesophagus increases the risk of adenocarcinoma Parietal cells secrete hydrochloric acid and intrinsic factor; chief cells pepsinogen and gastric lipase; surface/neck mucous cells mucus and bicarbonate; enteroendocrine cells include G cells producing gastrin --- Q7: Identify the alimentary segment, give two reasons, state three protective properties, and mention two adaptations for absorption Answer: Duodenum - villi, crypts of Lieberkuhn, and submucosal Brunner glands Protection: bicarbonate-rich alkaline mucus, mucosa-associated lymphoid tissue, and rapid epithelial regeneration Absorptive adaptations: great length/surface area, villi, microvilli, and muscularis mucosae movement --- Q8: Identify the structure, name three associated receptor-cell types, state its innervation, and name its associated glands Answer: Circumvallate papilla - mushroom-shaped papilla with grooves and parakeratinized stratified squamous epithelium Taste buds contain gustatory receptor cells, sustentacular/supporting cells, and basal cells Taste innervation: glossopharyngeal nerve (CN IX) Associated glands: serous glands of von Ebner --- Q9: Identify the alimentary segment, give two reasons, name three regional cell types, and state three unique gross features Answer: Colon - long straight glands, abundant goblet cells, absence of villi, and lymphoid aggregates Cell types include colonocytes/columnar absorptive cells, goblet cells, and enteroendocrine cells Gross features: appendices epiploicae, taeniae coli, and haustra --- Q10: Identify the organ, give three reasons, and state ultrastructural features of most lining epithelial cells Answer: Kidney - renal corpuscles, medullary rays, numerous tubules, and a capsule Proximal tubular cells specialized for active ion transport have basal membrane infoldings, microvilli, tight junctions, and abundant basal mitochondria --- Q11: Identify the organ, give two reasons, list two resident cells in zone D with functions, and state three functional-unit components Answer: Lung - alveoli and airways with cartilage Type I pneumocytes form the thin gas-exchange lining; type II pneumocytes secrete surfactant and regenerate alveolar epithelium Functional unit (acinus): respiratory bronchioles, alveolar ducts, and alveoli --- Q12: Identify the epithelium, give two reasons, state three sites, and name two parathyroid-gland cell types Answer: Transitional epithelium (urothelium) - umbrella-shaped surface cells and a variable number of layers Found in renal calyces/pelvis, ureters,