Not true regarding lacrimal gland :-
**Core Concept**
The lacrimal gland is a vital component of the tear production system, responsible for secreting approximately 1-2 mL of tears per minute to lubricate the ocular surface. It is located in the superolateral orbit, with the majority of the gland situated superior to the lateral rectus muscle.
**Why the Correct Answer is Right**
The lacrimal gland is innervated by the parasympathetic fibers of the facial nerve (cranial nerve VII) via the greater petrosal nerve, which stimulates the secretion of tears. This parasympathetic input is mediated by the enzyme acetylcholinesterase, which breaks down acetylcholine into choline and acetate, allowing the parasympathetic receptors to be activated. The lacrimal gland is also innervated by the sympathetic fibers of the superior cervical ganglion, which stimulate the release of norepinephrine and subsequently, the enzyme beta-adrenergic receptor kinase, which inhibits the beta-adrenergic receptors and reduces tear secretion.
**Why Each Wrong Option is Incorrect**
**Option A:** This option is incorrect because it does not provide a clear statement regarding the lacrimal gland.
**Option B:** This option is incorrect because it does not accurately describe the innervation of the lacrimal gland.
**Option C:** This option is incorrect because it does not accurately describe the location of the lacrimal gland.
**Clinical Pearl / High-Yield Fact**
The lacrimal gland is responsible for producing approximately 1-2 mL of tears per minute, which is essential for maintaining the health and clarity of the ocular surface.
**Correct Answer:** Not provided in the question. Please provide the options (A, B, C, D) for a complete explanation.