Special Senses Flashcards
The role of rhodopsin in vision is to
A. Allow the perception of color
B. Assist in convergence of the eyeballs
C. Transmit visual signals along the optic pathways to the brain
D. Give vision in poor light
D. Give vision in poor light
The incus is in direct contact with the
A. Malleus and the oval window
B. Staples and the Malleus
C. Round window and the stapes
D. Oval window and the tympanic membrane
B. Staples and the Malleus
What portion of the eye may become icteric in patients with hepatitis
A. Iris
B. Scelera
C. Cornea
D. Conjunctivia
B. Scelera
The ___________conducts signals to the brain via the optic nerve and interprets them as vision
A. Iris
B. Lens
C. Pupil
D. Retina
D. Retina
The anterior chamber is the portion of the globe between the ____________ and the __________ and is filled with __________humor
A. Iris, lens, vitreous
B. Cornea, iris, aqueous
C. Lens, iris, vitreous
D. Lens, cornea, aqueous
D. Lens, cornea, aqueous
Which of the following statements regarding vitreous humour is most correct
A. Vitreous humour is a jelly like substance that is replenished if lost
B. Vitreous humour fills the posterior chamber and maintains the shape of the globe
C. Vitreous humor is a clear watery fluid that fills the anterior chamber
D. The most significant risk caused by loss of vitreous humor is infection
B. Vitreous humour fills the posterior chamber and maintains the shape of the globe
A patient with a loss of peripheral vision most likely has damage to the
A. Retina
B. Pupil
C. Cornea
D. Lens
A. Retina
The cartilaginous external portion of the ear is called the
A. Ossicle
B. Cochlea
C. Auricle
D. Oval window
C. Auricle
The middle ear consists of the
A. Cochlea and semicircular canals
B. Organ of corti and external auditory canal
C. Inner portion of the tympanic membrane and the ossicle
D. Pinna and the exterior portion of the tympanic membrane
C. Inner portion of the tympanic membrane and the ossicle
___________ forms the principal mass of the tooth and is much denser and stronger than bone
A. Pulp
B. Dentinee
C. Enamel
D. Gingiva
B. Dentinee
The regikn where the lens focuses the image onto the retina is the
A. Optic nerve
B. Pupil
C. Fovea
D. Blind spot
C. Fovea
The fluid that fills the posterior chamber of the eye is the
A. Lacrimal fluid
B. Aqueous humor
C. Vitreous humor
D. Lachrymal fluid
C. Vitreous humor
The major light absorbing pigment in retinal photoreceptors is
A. Mesophyll
B. Cone opsin
C. Rhodopsin
D. Melanin
C. Rhodopsin
Sympathetic stimulation of the iris causes
A. Pupillary construction
B. Pupillary dilation
C. Astigmatism
D. Vitreous secretion
B. Pupillary dilation
