Type of collagen seen in vitreous humor?
**Core Concept**
The **vitreous humor** is the clear gel-like substance filling the space between the lens and the retina in the eye, and its main component is a type of collagen. **Collagen** is the most abundant protein in the human body, providing strength and structure to various tissues.
**Why the Correct Answer is Right**
The correct answer is related to the specific type of collagen found in the vitreous humor, which is **Type II collagen**. This type of collagen is characteristic of cartilaginous tissues and is also found in the vitreous humor, where it contributes to its gel-like properties. The vitreous humor is composed of about 99% water, with the remaining 1% consisting of collagen fibers and hyaluronic acid.
**Why Each Wrong Option is Incorrect**
**Option A:** Incorrect because it does not specify the correct type of collagen.
**Option B:** Incorrect as it is not related to the vitreous humor.
**Option D:** Incorrect because it is not the primary type of collagen in the vitreous humor.
**Clinical Pearl / High-Yield Fact**
It's essential to remember that **Type II collagen** is associated with the vitreous humor, as this knowledge can be relevant in understanding various ophthalmological conditions. The composition of the vitreous humor is crucial for maintaining the eye's structure and function.
**Correct Answer:** D. Type II collagen