Motor neurons carry impulses from the central nervous system to the muscles and organs.
The central nervous system sends impulses to the muscles and organs through motor neurons. The transmission of signals from the central nervous system to the muscles and organs, which in turn cause them to contract or relax, is carried out by motor neurons, a type of nerve cell. These impulses are sent to the muscles and organs by motor neurons in the central nervous system, which is made up of the brain and spinal cord. This gives us the ability to move and do other things. Efferent neurons carry signals away from the central nervous system, which is why motor neurons are categorized as such.
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b. large intestine.
c. stomach lining.
d. lungs.
b. asbestos
c. water pollution
d. excessive UV rays
H2O NaCl FeO CH4
The answer is CH4
Answer:
Option). 4-5 days.
Explanation:
Morula is a 4-5 days stage of early embryonic development. It represents a solid ball, having 16 cells, known as blastomeres. In human embryo, differentiation begins with morula stage, along with cleavage to form trophoblast (an outer layers of cell) and inner cell mass.
During development, trophoblast forms embryonic part of placenta and inner cell mass form respective structures of embryo.
Thus, the correct answer is option).4-5 days.
Answer:
Day 4-5
Explanation:
The first cell differentiation occurs when the embryo reaches approximately five days after fertilization, forming the blastocyst.
In this case, the cells on the outside undergo the process of differentiation and become responsible for the formation of embryonic attachments (structures that derive from the embryo's germ leaflets but are not part of the embryo's body, such as the amnion).
In the meantime, those cells that remained inside, also undergoing the process of differentiation, become pluripotent stem cells, which are responsible and capable of forming all tissues.
Previously, when they are still undergoing the process of dividing up to 8 cells, each cell is capable of forming a complete being when inserted into an egg.
By going through the whole process and becoming pluripotent stem cells, they can form all kinds of body tissues, butno longer a complete being.
The comet will die or will recover after it has made several trips around the Sun. the tail of the comet always point away from the sun because the sun’s ray heat up and the solar winds push on the comet and then make the tail.
The heat from the Sun vaporizes most of the frozen ice in the comet. The remaining small particles spread out in the orbit of the comet.