You are a medical education expert. Research the following anatomy/histology topics from the medical textbook library database and return detailed, well-organized answers suitable for MBBS 1st year students. Use query_library_db with FTS search on paragraphs_fts and headings_fts to find relevant textbook content. TOPICS TO RESEARCH: 1. STYLOID APPARATUS - components (styloid process, stylohyoid ligament, lesser horn of hyoid), muscles attached (styloglossus, stylopharyngeus, stylohyoid), clinical significance, styloid syndrome 2. ARTERIAL SUPPLY OF ANTERIOR INFERIOR PART OF NASAL SEPTUM (Little's area / Kiesselbach's plexus) - vessels contributing, clinical application (epistaxis), why it bleeds and how to manage 3. ORGAN OF CORTI - detailed histology, location, cell types (inner and outer hair cells, pillar cells, supporting cells), basilar membrane, tectorial membrane, endolymph/perilymph, mechanism of hearing 4. SCALP WOUNDS BLEED PROFUSELY BUT HEAL RAPIDLY - anatomical explanation of 5 layers of scalp (SCALP mnemonic), why vessels don't retract (dense connective tissue), why healing is rapid (rich blood supply) 5. CAVERNOUS SINUS THROMBOSIS causing ophthalmoplegia, medial squint, diplopia - structures passing through cavernous sinus (CN III, IV, V1, V2, VI, internal carotid artery), why CN VI is most affected first, why medial squint occurs, clinical features 6. THYROIDECTOMY PRECAUTIONS AND WHY - structures at risk: recurrent laryngeal nerve, external laryngeal nerve, parathyroid glands, superior/inferior thyroid arteries; why each precaution is taken; complications if each structure is damaged 7. DEVELOPMENT OF TONGUE IS COMPOSITE (nerve and vascular supply) - branchial arch contributions (1st, 3rd, 4th arches), anterior 2/3 vs posterior 1/3 development, nerve supply (lingual nerve, chorda tympani, glossopharyngeal, vagus, hypoglossal), why composite development explains the nerve supply Search the library database using: - SELECT book_title, section_heading, '/textbooks/' || block_file_path AS file_path, line_start, line_end, snippet(paragraphs_fts, 0, '>>>', '<<<', '...', 30) as snippet FROM paragraphs_fts WHERE paragraphs_fts MATCH 'search terms' ORDER BY rank LIMIT 10 Then READ the relevant file sections using read_file with the file_path, offset=line_start-1, limit=80 to get full content. Return a comprehensive, detailed answer for each of the 7 topics with all anatomical details, clinical applications, and explanations. Format clearly with headings for each topic.

You are a medical education expert. Research the following anatomy topics from the medical textbook library database and return detailed, well-organized answers suitable for MBBS 1st year students. Use query_library_db with FTS search to find relevant textbook content, then read relevant sections. TOPICS TO RESEARCH: 8. ROTATORY MOVEMENT OF KNEE JOINT - What is meant by rotation at the knee? Why does rotation occur? Medial rotation of the tibia locks the knee (screw-home mechanism), lateral rotation unlocks it. Which muscles cause each rotation? Explain the "screw-home mechanism" and its importance. 9. INVERSION AND EVERSION OF FOOT - Define each movement. Which joints are involved (subtalar/talocalcaneal, transverse tarsal/midtarsal joint)? Muscles causing inversion (tibialis anterior, tibialis posterior, extensor hallucis longus) with nerve supply. Muscles causing eversion (peroneus longus, brevis, tertius) with nerve supply. Normal range of movement. Clinical importance (ankle sprain). 10. PATELLA DISLOCATION LATERALLY - Factors that normally prevent lateral dislocation of the patella: (a) bony factors - lateral femoral condyle being larger, (b) medial pull of vastus medialis oblique (VMO), (c) medial patellofemoral ligament, (d) Q-angle considerations, (e) iliotibial tract. Why does the patella have a tendency to dislocate laterally in the first place? Factors preventing it. 11. COMPLETE FACIAL NERVE PALSY CASE (50-year-old man with drooping left corner of mouth, inability to close eyes, absent forehead wrinkles, altered taste on anterior 2/3 tongue, hypersensitivity to sounds): - Which cranial nerve is affected? CN VII (Facial nerve) - Functional components of CN VII: SVE (motor to muscles of facial expression), GVE (parasympathetic to lacrimal, submandibular, sublingual glands), SVA (taste, anterior 2/3 tongue), GSA (skin of concha) - Intracranial course of CN VII: from pons, through internal acoustic meatus, through petrous temporal bone in facial canal, genu, greater petrosal nerve, nerve to stapedius, chorda tympani, exits via stylomastoid foramen - At which point does it exit the cranium? Stylomastoid foramen - Anatomical basis for altered taste (chorda tympani affected) and hypersensitivity to sounds (nerve to stapedius affected → hyperacusis) - Other clinical signs: loss of lacrimation, dry mouth, corneal ulceration, Bell's phenomenon - Localization: Since forehead is affected (upper and lower face) = LMN lesion (Bell's palsy); taste affected = lesion above chorda tympani origin; hyperacusis = lesion above nerve to stapedius. Therefore lesion is in the facial canal between the nerve to stapedius and the geniculate ganglion/greater petrosal nerve level. 12. HISTOLOGY OF SPINAL CORD, TRACHEA, AND THYROID: - Spinal cord: H-shaped grey matter (anterior horn - large motor neurons, posterior horn - sensory neurons, lateral horn T1-L2), white matter (ascending/descending tracts), central canal, ependymal cells - Trachea: pseudostratified ciliated columnar epithelium with goblet cells, lamina propria, submucosa with seromucous glands, C-shaped hyaline cartilage rings (16-20), trachealis muscle posteriorly - Thyroid: follicles lined by simple cuboidal (inactive) to columnar (active) follicular cells, colloid (thyroglobulin) in lumen, parafollicular/C-cells between follicles (produce calcitonin) 13. MUSCLES OF MASTICATION - Name all four: Masseter, Temporalis, Medial pterygoid, Lateral pterygoid. For each: origin, insertion, nerve supply (all from mandibular nerve CN V3), action/movement. Also mention other muscles involved in jaw movements. Muscles of mastication vs muscles of facial expression distinction. 14. ARTERIAL SUPPLY OF BRAIN AND SPINAL CORD: - Brain: Circle of Willis - two internal carotid arteries (giving ACA, MCA, posterior communicating) and two vertebral arteries joining to form basilar artery (giving PCAs). Name all anastomotic vessels. Areas supplied by each artery. Clinical strokes in each territory. - Spinal cord: Anterior spinal artery (from vertebral arteries, supplies anterior 2/3), two posterior spinal arteries (from posterior inferior cerebellar artery, supplies posterior 1/3). Radicular arteries reinforce. Artery of Adamkiewicz (largest radicular artery, T9-L2). Clinical: anterior spinal artery syndrome. Search the library database: SELECT book_title, section_heading, '/textbooks/' || block_file_path AS file_path, line_start, line_end, snippet(paragraphs_fts, 0, '>>>', '<<<', '...', 30) as snippet FROM paragraphs_fts WHERE paragraphs_fts MATCH 'search terms' ORDER BY rank LIMIT 10 Also search headings_fts for broad topics: SELECT title, book_title, '/textbooks/' || block_file_path AS file_path, line_number, para_line_ranges, para_count FROM headings_fts WHERE headings_fts MATCH 'search terms' ORDER BY rank LIMIT 10 Then READ relevant sections using read_file with appropriate offsets. Return comprehensive, detailed answers for each topic with all anatomical details, clinical applications, and explanations for MBBS 1st year level. Format clearly with numbered headings.