The ratio between ethyl alcohol in blood and Vitreous humor is
**Core Concept**
The ratio between ethyl alcohol in blood and vitreous humor is an important aspect of forensic medicine and toxicology, as it can help determine the level of intoxication or impairment at the time of a crime or accident. The concentration of alcohol in vitreous humor is used as a reliable post-mortem indicator of blood alcohol levels.
**Why the Correct Answer is Right**
The concentration of alcohol in vitreous humor is similar to that in blood due to the similar osmotic pressures and the lack of significant metabolism by enzymes in the vitreous humor. This makes it a reliable indicator of blood alcohol levels. The vitreous humor is also less susceptible to post-mortem changes, such as decomposition, which can affect blood alcohol levels.
**Why Each Wrong Option is Incorrect**
* **Option A:** This option is incorrect because it does not account for the similarities in osmotic pressures between blood and vitreous humor, which allows for a reliable correlation between the two.
* **Option B:** This option is incorrect because it implies a significant difference in alcohol metabolism between blood and vitreous humor, which is not the case.
* **Option C:** This option is incorrect because it suggests that vitreous humor is not a reliable indicator of blood alcohol levels, which is not supported by scientific evidence.
**Clinical Pearl / High-Yield Fact**
The concentration of alcohol in vitreous humor can remain stable for several hours after death, making it a valuable tool in forensic medicine for estimating blood alcohol levels at the time of death.
**Correct Answer: A. 1:1 ratio**