Insulin-like Growth factor II plays an impoant role in
**Core Concept**
Insulin-like Growth Factor II (IGF-II) is a protein that plays a crucial role in cellular growth and development. It is a member of the insulin-like growth factor family and is involved in regulating cell proliferation, differentiation, and survival.
**Why the Correct Answer is Right**
IGF-II acts by binding to its receptor, IGF1R, which triggers a signaling cascade that promotes cell growth and survival. This process is mediated by the activation of the PI3K/AKT pathway, which is a key regulator of cell metabolism and growth. IGF-II also has a role in fetal development and is involved in the regulation of fetal growth and development.
**Why Each Wrong Option is Incorrect**
**Option A:** IGF-II does not play a significant role in regulating lipid metabolism.
**Option B:** While IGF-II does have some effects on the cardiovascular system, it is not primarily involved in regulating blood pressure.
**Option C:** IGF-II is not directly involved in the regulation of electrolyte balance.
**Clinical Pearl / High-Yield Fact**
IGF-II is often overexpressed in various types of cancer, including Wilms tumor and hepatocellular carcinoma, and is thought to contribute to tumor growth and progression.
**Correct Answer: C. Regulation of fetal growth and development.**