#1
Which of the following is NOT a special sense?
Touch
ExplanationTouch is a somatic sensation, not a special sense.
#2
What is the medical term for nearsightedness?
Myopia
ExplanationMyopia is a refractive error where distant objects appear blurry.
#3
Which of the following is responsible for detecting changes in body position and movement?
Proprioceptors
ExplanationProprioceptors sense changes in muscle length and tension, contributing to body position and movement perception.
#4
Which structure is responsible for converting sound waves into electrical signals in the ear?
Cochlea
ExplanationThe cochlea contains hair cells that convert mechanical vibrations into electrical signals for auditory processing.
#5
Which structure in the eye is responsible for producing tears?
Lacrimal gland
ExplanationThe lacrimal gland produces tears, which help keep the eye moist and protect it from foreign particles.
#6
Which part of the eye controls the amount of light entering?
Iris
ExplanationThe iris regulates the size of the pupil, controlling the amount of light entering the eye.
#7
What is the function of the tympanic membrane?
To transmit sound vibrations to the inner ear
ExplanationThe tympanic membrane, or eardrum, transmits sound vibrations from the outer ear to the middle ear.
#8
Which part of the ear is responsible for maintaining balance?
Vestibule
ExplanationThe vestibule, along with the semicircular canals, is involved in balance and spatial orientation.
#9
What is the name of the area of the retina responsible for the sharpest vision?
Fovea centralis
ExplanationThe fovea centralis contains densely packed cones for high visual acuity.
#10
What is the medical term for the eardrum?
Tympanic membrane
ExplanationThe tympanic membrane, or eardrum, separates the outer ear from the middle ear and transmits sound vibrations.
#11
What is the function of the ciliary body in the eye?
To adjust the shape of the lens for focusing
ExplanationThe ciliary body changes the shape of the lens to focus light onto the retina.
#12
Which of the following cranial nerves is NOT involved in vision?
Olfactory nerve
ExplanationThe olfactory nerve is responsible for the sense of smell, not vision.
#13
What is the term for the transparent, gel-like substance that fills the posterior segment of the eye?
Vitreous humor
ExplanationThe vitreous humor maintains the shape of the eye and supports the retina.
#14
Which of the following structures is part of the vestibular system?
Semicircular canals
ExplanationThe semicircular canals detect rotational movements of the head and are part of the vestibular system.
#15
What is the function of the optic chiasm?
To cross some optic nerve fibers
ExplanationThe optic chiasm is where some optic nerve fibers from each eye cross to the opposite side of the brain.
#16
Which cranial nerve is primarily responsible for transmitting information about taste from the tongue to the brain?
Glossopharyngeal nerve
ExplanationThe glossopharyngeal nerve carries taste sensations from the back of the tongue and throat to the brain.
#17
What is the purpose of the aqueous humor in the eye?
To maintain intraocular pressure
ExplanationThe aqueous humor maintains pressure in the eye and provides nutrients to surrounding structures.