If your question is 'Is the trophoblast present during germ layer formation (i.e. gastrulation) ?' then the answer is YES
Yes, there are naturally occurring crystals present in the human body, such as calcium oxalate crystals in the kidneys and uric acid crystals in joints.
The trophoblast is the part of the blastocyst that promotes implantation and produces human chorionic gonadotropin (hCG). This hormone helps maintain the uterine lining during early pregnancy and is the basis for most pregnancy tests.
In humans, the outer layer of the blastocyst, called the trophoblast, secretes human chorionic gonadotrophin (hCG),human placental lactogen (HPL), and other hormones.
human chorionic gonadotropin (HCG)
Iron is a naturally occurring element, it is present in the human body, but the human body does not create it. It cannot be synthesised by any living being. Iron levels in the human body can be increased by eating iron rich foods and using supplements.
Vitamins are naturally occurring compounds present in most foods. The human body cannot produce vitamins and therefore has to acquire them from external sources: diet or supplements.
The sources of human capital formation under the creativity are education and health.The proper education and the proper maintenance of health and child birth can contribute towards human capital formation.
The acid present in the human stomach is gastric acid.
Yes, radioactive materials are naturally occurring and can be found in the air, water, soil, and even in our bodies. They can also be produced through human activities such as nuclear power generation and medical procedures.
hurricanes are naturally occurring events, they aren't something that was invented. they have been around for a long time, possibly since the formation of the earth's atmosphere.
There are 3 type of cartilage present in the human body
There are trillions of good bacteria present in the human body.