Skin develops from ectoderm.
The skin originates from the ectoderm layer of the embryonic germ cells. During development, the ectoderm gives rise to the epidermis (outer layer of the skin) and its appendages such as hair follicles, sweat glands, and nails.
Cells of the nervous system differentiate from the ectoderm germ layer during embryonic development. The ectoderm gives rise to not only the nervous system, but also to structures such as the skin and hair.
The tongue is derived from the ectoderm germ layer during early embryonic development.
Ectoderm
The primary germ layer that forms the brain and spinal cord is called the ectoderm.
The skin originates from the ectoderm layer of the embryonic germ cells. During development, the ectoderm gives rise to the epidermis (outer layer of the skin) and its appendages such as hair follicles, sweat glands, and nails.
Cells of the nervous system differentiate from the ectoderm germ layer during embryonic development. The ectoderm gives rise to not only the nervous system, but also to structures such as the skin and hair.
Gastrulation is first step towards germ layer development .
The tongue is derived from the ectoderm germ layer during early embryonic development.
Melanocytes are derived from the neural crest, which is a transient embryonic structure that forms from the ectoderm germ layer.
The outermost primary germ layer is the ectoderm. It develops into structures such as the skin, hair, nails, and the nervous system, including the brain and spinal cord. The ectoderm plays a crucial role in the formation of sensory organs and contributes to the overall development of the organism.
endoderm
Ectoderm
Endoderm: (most internal germ layer) gives rise to the lining of the digestive tract and the organs derived from it, such as the liver and lungs of vertebrates.Mesoderm: (middle germ layer) forms muscle, the skeletal system, and the circulatory system.Ectoderm: (most exterior germ layer) gives rise to the outer covering and, in some phyla, to the central nervous system.
The primary germ layer that forms the brain and spinal cord is called the ectoderm.
Nervous tissue is derived from the ectoderm germ layer during embryonic development.
If your question is 'Is the trophoblast present during germ layer formation (i.e. gastrulation) ?' then the answer is YES