BIO150

Western Mindanao State University

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A Lecture in BIO150: Excretory System Development
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February 2023

2022/2023
The excretory system is a crucial component of the body responsible for removing waste products and regulating fluid balance. During development, the excretory system is formed from different germ layers, including the intermediate mesoderm, the ectoderm, and the endoderm. In vertebrates, the intermediate mesoderm gives rise to the kidneys and the urogenital ridge, which will form the bladder, ureters, and urethra. The ectoderm gives rise to the epidermal cells of the skin, which will later f...
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A Lecture in BIO 150: Gametes and Fertilization
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2

February 2023

2022/2023
Gametes are the reproductive cells in sexually reproducing organisms. They are specialized cells that carry half the genetic information of an individual and are involved in the fusion of genetic material during fertilization. In males, the gametes are called sperm and are produced in the testes. In females, the gametes are called ova or eggs and are produced in the ovaries. Fertilization is the process by which the genetic material from the male and female gametes combines to form a single c...
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A Lecture in BIO150: Gastrulation and Germ Layer Formation
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2

February 2023

2022/2023
Gastrulation is a process that occurs in the early stages of animal development, where a single-layered blastula (a ball of cells) transforms into a multi-layered structure. During gastrulation, cells move and rearrange to form the three germ layers: the ectoderm, mesoderm, and endoderm. These germ layers will eventually give rise to all of the tissues and organs in the developing organism. The ectoderm is the outermost layer and will form the skin, hair, nails, and nervous system. The mesode...
ajalanano
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