The serous membrane is a thin membrane that lines the internal body cavities and organs and is the first line of physical defense from microorganisms.
Also, serous membrane secretes cytokines and other molecules involved in membrane repair and inflammatory response. Some immune responses, like coagulation and movement of white blood cells are under the control of serous membrane.
Which cells we don’t see no answer choices to really give a answer
Answer:
Nucleus and acrosome
Explanation:
Human sperm is the male gamete or sex cell formed by spermatogenesis. It is made of a head, neck, a middle piece and a tail. The sperm head consists of a haploid nucleus and anterior to nucleus, an acrosome. The nucleus contains DNA and nuclear protein and it transfers genetic features from the male to the next generation. The acrosome contains an important enzymes, hyaluronidase and acrosin. These enzymes help to enter head into an ovum.
Scientists often perform experiments to check and recheck their work. They also redo these experiments to ensure correct results.
