17 Questions
Which of the following is a component of naturally occurring tears?
Proteins
What is the primary function of tears in the eye?
To maintain clear vision
What is the primary cause of watering eyes (epiphora) in adults and older children?
Blocked or narrowed tear ducts
What is the effect of chronic hypoxia (lack of oxygen) on the corneal epithelium?
Thickening of the epithelium
Which type of tear is produced as a reflex response to an irritant or foreign object in the eye?
Reflex tears
Where is the lacrimal gland located?
Above the outer eye
Which of the following is NOT a cause of over-production of tears?
Regular blinking
What is the role of tears in eye health?
All of the above
Which of the following is a component of naturally occurring tears?
All of the above
What is the term used for the tear ducts in the eyes?
Lacrimal ducts
Which type of tears is produced in response to emotional stimuli?
Emotional tears
What is the primary role of basal tears?
Protecting the cornea of the eye
Which of the following best describes the difference between basal and reflex tears?
Reflex tears contain more antibodies to fight foreign chemicals
What distinguishes emotional tears from the other types of tears?
They contain more proteins, specifically emotional or stress hormones
What is the primary function of tears in the eye?
To protect the eye from foreign particles
Which of the following components of tears are ionically bonded?
Sodium chloride (NaCl) and potassium chloride (KCl)
Where are tears naturally produced in the eye?
The lacrimal or tear ducts
Learn about the composition of Basal, Reflex, and Emotional (psychic) tears. Explore the key ingredients and functions of each type of tear, including salts, water, and mucus.
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