Question

14. The amount of light entering the eye is regulated by the: a) lens b) iris c) cornea d) conjunctiva 15. Which of the following values indicates the best visual acuity? a) 20/15 b) 20/20 c) 20/30 d) 20/40 Matching. Place in the correct order from the pinna to the cochlea the following structures 16. 17 18. 19. 20. 21. a) malleus b) auditory canal c) stapes d) oval window e) incus ab) tympanic membrane 22. The scientific name for the eardrum is the: a) oval window b) round window c) tympanic membrane d) cochlea 23. The organ of both static and dynamic equilibrium is the: a) cochlea b) organ of Corti c) semicircular canals d) vestibular apparatus e) utricle and saccule of the vestibule 24. The portion of the inner ear specifically responsible for dynamic or rotational equilibrium is the: a) cochlea b) organ of Corti c) semicircular canals d) vestibular apparatus e) utricle and saccule of the vestibule 25. The portion of the ear that equalizes air pressure in the middle ear via and opening to the nasopharynx is the: a) auditory canal b) Eustachian tube c) tympanic membrane d) semicircular canals

Answer 1

14 ( b part)

Iris which is attached to cillary muscle conrols the entering of light into the eye

15 ( b part)  

Normal vision acuity is 20/20

The order of structure of ear is

16 - Auditory canal 17 - tympanic membrane 18 maleus 19 incus 20 stapes 21 oval window

22 ( c part)

Eardrum is called tymphanic membrane

23 (part)  

Utricle and saculue causes both dynamic and static equilibrium