相关实验视频

Updated: Aug 21, 2026

Determination of Reproductive Competence by Confirming Pubertal Onset and Performing a Fertility Assay in Mice and Rats
06:38

Determination of Reproductive Competence by Confirming Pubertal Onset and Performing a Fertility Assay in Mice and Rats

Published on: October 13, 2018

下垂体功能的性差异化:明显的差异是青少年灵长类动物和动物

F J Karsch, D J Dierschke, E Knobil

    Science (New York, N.Y.)
    |February 2, 1973
    PubMed
    概括

    在灵长类动物中,雌激素可以触发黄素化激素的激增,类似于月经周期. 这表明,早期的雄激素暴露不会阻止循环性淋巴激素控制系统的发展.

    更多相关视频

    Assessment of Sexual Behavior of Male Mice04:38

    Assessment of Sexual Behavior of Male Mice

    Published on: March 5, 2020

    A Comparative Approach for Quantitative Cell Counting Studies in Widely Different Mammalian Brains07:14

    A Comparative Approach for Quantitative Cell Counting Studies in Widely Different Mammalian Brains

    Published on: January 16, 2026

    相关概念视频

    The Y Chromosome Determines Maleness02:19

    The Y Chromosome Determines Maleness

    The Y chromosome is a sex chromosome found in several vertebrates and mammals, including humans. In addition to 22 pairs of autosomes, the human males have one X chromosome and one Y chromosome. In these organisms, the presence or absence of the Y chromosome determines the development of male traits.
    Evolution
    Around 300 million years ago, the two sex chromosomes diverged from two identical autosomal chromosomes. Over time, the Y chromosome has lost most of its genes, shrinking in size. Today,...
    The Ratio of X Chromosome to Autosomes02:45

    The Ratio of X Chromosome to Autosomes

    In most organisms, sex is determined by the ratio of X and Y chromosomes. However, in some organisms, such as Drosophila and C.elegans, sex is determined by the ratio of the number of X chromosomes to the number of sets of autosomes. The Y chromosome in Drosophila is active but does not determine sex. It contains genes responsible for the production of sperms in adult flies.  
    Normal male Drosophila has a ratio of one X chromosome to two sets of autosomes. In contrast, normal female Drosophila...
    The Pituitary Gland01:17

    The Pituitary Gland

    The pituitary is a small endocrine organ in the sphenoid bone under the hypothalamus. Primarily, the pituitary in adults has two distinct anatomical and functional regions— the anterior and posterior lobes. During human fetal development, a third pituitary gland region called the pars intermedia atrophies and disappears. However, some of its cells migrate and exist adjacent to the anterior pituitary in adults.
    Hormones of the Pituitary Gland01:27

    Hormones of the Pituitary Gland

    The small, pea-sized pituitary gland is located at the base of the brain. It is crucial in regulating various bodily functions, from growth to reproduction. The gland is divided into the anterior lobe and the posterior lobe. The secretory cell clusters in the pars distalis of the anterior pituitary lobe are controlled by hypothalamic regulators and synthesize six primary hormones.
    The most abundantly secreted hormone from the anterior lobe is the growth hormone, which controls overall growth by...