University:
University of Wolverhampton
Course:
4PY019 | Pharmacy
Academic year:

2024
Views:

92

Pages:

4
Author:

Sara

1. What are the types of papillae involved in taste? Describe their position, shape and appearance. (4) - Circumvallate Papillae (largest and near base of tongue) - Fungiform Papillae (like heads of mushrooms) - Foliate Papillae (leaf like and lied on the sides of the tongue) - Filliform papillae (small inside and found all over tongue surface) 2. Describe the types of taste buds we have and their location. Buds for bitter taste are at the base of the tongue. Buds for sweet and salty taste are at the tip of the tongue. Buds for sour taste are at the side of the tongue. 3. What papillae does not have taste buds? Filiform papillae 4. What is the auri- Outer ear with irregular shaped framework and elastic cle (Pinna)? cartilage covered with skin 5. What is the lobule? Skin-covered connective tissue that extends from the lower margin of the auricle. 6. What is the exter- Extends from the auricle to the eardrum and is curved and nal auditory mea- lined with skin. tus (canal)? 7. What glands are Ceruminous glands in the external auditory meatus (canal)? 8. What is the mid- Small air filled chamber in the temporal bone dle ear? 9. What is the mid- Separated from the external auditory meatus by the tymdle ear separated panic membrane from? 1/4 10. How is the mid- By a bony wall with 2 openings; the oval window and the dle ear separated round windows from the internal ear? 11. What are the three ear ossicles? - Malleus - Incus - Stapes 12. What do the ear ossicles do? Pick up vibrations of the tympanic membrane and transmits them to the oval window 13. What do the A bridge across the middle-ear chamber between the three air ossicles tympanic membrane and the oval window form? 14. What does the in- Bony labyrinth and Membraneous labyrinth. ternal ear consist of? 15. What is the bony Hollowed out region of the bone labyrinth? 16. What is the bony Perilymph labyrinth filled with? 17. What are - Vestibule the components - Semicircular Canals of the bony - Cochlea labyrinth? 18. Where is Within the osseous labyrinth the membranous labyrinth located? 19. What is Endolymph the membranous 2/4 labyrinth filled with? 20. What is the vestibule? A chamber close to the middle of the middle ear chamber 21. What are the 2 components of the vestibule? - Utricle - Saccule 22. How many semi- 3 circular canals are there? 23. What is conMembranous semicircular ducts tained in the semicircular canals? 24. What do semicir- Ampulla cular ducts contain? 25. What is the cochlea associated with? Hearing 26. What is the shape of the cochlea? Snail shell like 27. What is the cochlea divided into? - Scala vestibuli - Cochlear duct (scala media) - Scala tympani 28. What is the basi- Organ of the Corti containing the receptors of hearing lar membrane? 29. Define hearing. Process of perceiving sound 3/4 30. Where do sound The external auditory canal waves enter? 31. Describe the mechanism of hearing Sound waves strike the tympanic membrane and get converted to vibrations, which are transmitted across the middle ear cavity by the ossicles to the oval window. This causes movement in the perilymph pushing the perilymph along the Scala vestibuli into the Scala tympani. Sensory cells of the organs of Corti vibrate and when they touch the tectorial membrane, impulse is generated. Impulse is carried to the brain and translated to hearing. 4/4