MCQ Detailed View

The lachrymal gland is the gland in the human body responsible for producing tears. These glands are part of the lacrimal apparatus, located just above the outer corner of each eye, inside the bony orbit. They play a crucial role in maintaining eye health, lubrication, and protection.Tears are a combination of water, salts, proteins, and enzymes. Their functions include:

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  Lubrication: Keeping the surface of the eye moist to prevent dryness and irritation.

  
  


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  Protection: Washing away dust, dirt, and small foreign particles that may enter the eye.

  
  


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  Defense against infections: Tears contain lysozyme, an antibacterial enzyme that protects the eyes from harmful microorganisms.

  
  


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  Nourishment: Providing oxygen and nutrients to the cornea, which does not have its own blood supply.

  
  

When a person blinks, tears spread evenly across the surface of the eye, keeping it smooth and clear. Excess tears drain into small ducts that lead to the nasal cavity, which is why people often get a runny nose when they cry.

Other glands listed in the options do not secrete tears:

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  Pituitary gland: Produces hormones that regulate other glands but does not produce tears.

  
  


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  Thyroid gland: Controls metabolism by producing thyroid hormones.

  
  


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  Pancreas: Produces insulin and digestive enzymes, not tears.

  
  

Tear production is vital for eye comfort and clear vision. Lack of tear secretion can lead to dry eye syndrome, causing discomfort, redness, and even damage to the cornea if untreated.

In conclusion, the lachrymal gland is the gland that secretes tears, making option A (Lachrymal) the correct answer to this biology MCQ.