Answer:
The embryonic stage.
Explanation:
The prenatal development goes through three different stages:
- The germinal stage: Begins at conception and it takes place during the next 2 weeks.
- The embryonic stage: It takes place from week two to eight weeks after conception. During this stage, the embryo begins to differentiate itself into three layers that will become different systems of the body. By week eight, the basic structures of the brain and central nervous system have been established and the organs start to appear.
- The fetus stage: It takes place from week 9 until birth. The systems formed in the previous stage continue to form until they are ready for birth.
Therefore, the period of prenatal development that occurs two to eight weeks after conception. During this period, the rate of cell differentiation intensifies, support systems for the cells form, and organs appear is called the embryonic stage.
Answer:
Innovative curriculum design
Explanation:
Hope it helps!
It is because Galen based his information about anatomy on what he had found out during dissecting the bodies of animals. This created mistakes on his claims in human anatomy. Some of these anatomical errors were the following:
1. He thought muscles are attached to the bone just like in dogs.
2. He thought that the liver produces blood. He then realized that it flowed around the body, but he claimed that is burned fuel for the muscle.
3. He thought that there are holes through the septum, which allowed the blood to flow from one side to another of the heart.
4. He thought that there are blood vessels in the brain.
5. He thought human’s jaw was made up of two bones just like a dog’s.
6. He made mistakes about the liver’s shape.
