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Questions and Answers
What is the average frequency of blinking in dogs according to the text?
What is the average frequency of blinking in dogs according to the text?
- 10 blinks per minute
- 3-5 blinks per minute (correct)
- 1-5 blinks every 5 minutes
- 5-25 blinks per minute
Which species has the highest frequency of blinking according to the text?
Which species has the highest frequency of blinking according to the text?
- Humans
- Horses (correct)
- Cats
- Pigs
What is the primary function of the preocular tear film according to the text?
What is the primary function of the preocular tear film according to the text?
- To lubricate the cornea only
- To maintain an optically uniform surface on the cornea and control bacterial flora (correct)
- To remove bacteria only
- To provide nutrients to the cornea
Which of the following is true about the lipid layer of the tear film based on the text?
Which of the following is true about the lipid layer of the tear film based on the text?
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How does tear evaporation relate to the rate of blinking according to the text?
How does tear evaporation relate to the rate of blinking according to the text?
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Which gland is responsible for secreting the lipid layer of the tear film?
Which gland is responsible for secreting the lipid layer of the tear film?
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Study Notes
Blinking Frequency
- The average frequency of blinking in dogs is 10-15 times per minute.
- The species with the highest frequency of blinking is the chinchilla, with 50 times per minute.
Tear Film Function
- The primary function of the preocular tear film is to lubricate and protect the cornea and conjunctiva.
Lipid Layer of Tear Film
- The lipid layer of the tear film is secreted by the meibomian gland.
- The lipid layer helps to slow down tear evaporation.
Tear Evaporation and Blinking Rate
- Tear evaporation is inversely related to the rate of blinking, meaning that slower blinking rates lead to faster tear evaporation.
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Description
Learn about the frequency of blinking in dogs and cats based on different studies. Understand how blinking patterns differ between these two animals.
