Endothelium is derived from -a)Integumentb)Placentac)Nucellusd)Funicul...
Endothelium is derived from Integument
- The integument is the outer protective covering of an organism, which includes the skin, hair, nails, and glands.
- The endothelium is the thin layer of cells that lines the inner surface of blood vessels, lymphatic vessels, and the heart.
- The endothelium is derived from the mesoderm, which is one of the three primary germ layers in the early development of an embryo.
- During embryonic development, the mesoderm differentiates into various tissues and organs, including the endothelium.
- The integument, which is derived from the ectoderm, does not give rise to the endothelium.
- Instead, the integument gives rise to structures such as the epidermis, hair follicles, and sweat glands.
- The endothelium is formed from a process called vasculogenesis, where mesodermal cells differentiate into endothelial cells and form the initial blood vessels.
- These blood vessels then undergo further development and remodeling to form the mature blood vessels lined with endothelium.
- Therefore, the correct answer is A: Integument, as the endothelium is not derived from the placenta, nucellus, or funiculus.