Untitled Deck Flashcards
Which extraocular muscle is responsible for moving the eye upward?
A. Superior rectus
Which structure controls the size of the pupil and gives the eye its color?
B. Iris
What is the main function of the ciliary body?
B. Changing lens shape for focusing
Which part of the eye is responsible for the sharpest vision?
C. Fovea centralis
The vitreous humor is located in which part of the eye?
B. Behind the lens, filling the main chamber of the eye
Which part of the external ear collects and directs sound waves into the auditory canal?
A. Pinna (Auricle)
What is the function of the eustachian tube in the middle ear?
B. Equalizing air pressure between the middle ear and the atmosphere
Which auditory ossicle is in direct contact with the oval window?
C. Stapes
Where is the organ of Corti located?
B. Cochlea
Which cranial nerve is associated with hearing and balance?
B. Cranial Nerve VIII (Vestibulocochlear Nerve)
Which structure of the eye focuses light onto the retina?
A. Lens
What is the function of the conjunctiva?
C. Protecting and lubricating the eye
Which part of the eye contains the photoreceptors responsible for vision?
B. Retina
The optic disc is also known as the _____?
A. Blind spot
What is the primary function of aqueous humor?
B. Maintaining intraocular pressure and nourishing the cornea and lens
The sclera is commonly referred to as the _____?
B. White of the eye
Which extraocular muscle moves the eye outward, away from the nose?
B. Lateral rectus
Which structure separates the external ear from the middle ear?
B. Tympanic membrane (eardrum)
What is the primary function of the semicircular canals in the inner ear?
B. Maintaining balance and equilibrium
The malleus, incus, and stapes are collectively known as _____?
B. The auditory ossicles
What is the function of the cochlea?
A. Transmitting sound waves to the auditory nerve
The vestibular nerve and cochlear nerve combine to form which cranial nerve?
B. Vestibulocochlear nerve (Cranial Nerve VIII)
What structure within the cochlea contains hair cells that detect sound?
A. Organ of Corti
The external auditory canal ends at the _____?
A. Tympanic membrane
The vestibule in the inner ear is primarily involved in detecting _____?
A. Changes in linear motion
Which nerve carries signals for facial expressions and taste, passing through the inner ear?
B. Facial nerve
