SC213 Lecture Notes - Lecture 11: Paramesonephric Duct, Vas Deferens, Seminal Vesicle
Document Summary
Sexual reproduction between two individuals increases variation in the gene pool. Variation in the gene pool of a species enables quick evolutionary adaptations to change in the environment. Also corrects genetic errors and disadvantageous mutations. Widespread communication throughout the body is accomplished through the release of hormones. Are derived from cholesterol, contain four carbon rings and exert their effects in three ways. Entering cells and activate certain kinds of proteins in the cytoplasm. Binding to chromosomes where they activate or inactivate certain genes. Are a special kind of steroids, released mostly by the gonads and to a lesser degree by the adrenal glands. Affect the brain, genital and other organs. Are a groups of sex hormones that include testosterone and others. Generally referred to as male hormones because men have higher levels than women. Include estradiol and others and are referred to as female hormones because women have higher levels.
