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EMBRIOLOGY, image, image, oogenesis-adalah-1, spermato, fertili,…

- - - - In this phase, the first egg cell division in oogenesis occurs unbalanced cytoplasmic development (cell part). Therefore, there is one oocyte that has a lot of cytoplasm, some do not have it. Oocytes with a lot of cytoplasm are larger than those without. This smaller oocyte is called the first polar body.
    - - Furthermore, the secondary oocyte, which is a larger size, will undergo a second egg cell division which produces the ootid. On the first polar body, it will also split into two-second polar bodies. Then, this Ootid will develop into an egg when it meets sperm cells ,or what are called spermatozoa.
    - - This oogenesis begins with the phases of mitosis and meiosis. If in mitosis which is the process of cell division and produces two or identical gametes, in the process of meiosis is the cell division which produces four gametes and each has half the number of chromosomes of the parent cell.
  - - - Serves to stimulate ovulation (the process of releasing egg cells).
    - - Serves to help the maturation of follicles and stimulate the growth of secondary genitals.
    - - Serves to stimulate ovulation (the process of releasing an egg or ovum).
    - - Serves to thicken the endometrial wall which plays a role in the shedding of the ovum (menstruation).
- - - - The mature ovum will ovulate and enter the Fallopian tube, ovulation occurs every month in women, every month a ripe ovum is released from the ovary to the fallopian tube, ovum only lasts 24 hours in the fallopian tube so if there is no sperm fertilizes the ovum cell will die
    - - About 200 million sperm must move from the vagina to the uterus and into the Fallopian tubes. Most sperm movement assisted by contractions of the uterus and fallopian tubes.
- - - - a type of cell division that occurs in organisms that reproduce sexually to produce gamete cells such as sperm or egg cells
    - - produce gamete cells for reproduction, namely egg cells7 and sperm cells
    - - MEIOSIS I
        
        PROPHASE 1
        
        METAPHASE 1
        
        ANAPHASE 1
        
        TELOFASE 1
        
        INTERPHASE
      - MEIOSIS II
  - - - form new cells so that organisms can grow
    - - form new cells so that organisms can grow
      - to replace damaged cells
    - - PROPHASE
        
        Chromosomes pair up
      - METAPHASE
        
        Chromosomes line up at equator
      - ANAPHASE
        
        Sister chromatids pulled apart
      - TELOPHASE
        
        Cell pinches in thr middle
- - - - Spermatidogenesis is the stage of the formation of spermatids from secondary spermatocytes. After the first stage of meiotic division, secondary spermatocytes will enter the second stage of the meiotic division until finally 4 spermatids are formed from 1 spermatogonium
    - - Spermiosis is the formation of spermatozoa from spermatids. After that, spermatozoa will experience remodeling again
    - - Spermatocytogenesis is a stage of development from spermatogonia to spermatocyte secondary. Spermatogonia located in the outermost layer of tubules continuously divide by mitosis to produce daughter cells identical to the parent cell
- - - - : Musculoskeletal system, vascular system, urogenital system, spleen and adrenal cortex
    - - central nervous system peripheral nerves, sensory epithelium of the ears, nose, and eyes, skin, including nails and hair, sweat glands, mammary glands as well as tooth enamel
    - - epithelium (tract digestivus, tract respiratorius, vesica urinaria, pancreas, liver, thyroid, and parathyroid)