| Lab 17 Female Reproductive System: 1) Index 2) Introduction 3) Things to Identify 4) Ovary 5)Ovary 2 6)Corpus Luteum 7) Corpus Albicans 8) Oviducts 9) Uterus (proliferative) 10) Uterus (secretory) 11)Uterus (menstral) 12) Cervix 13) Vagina 14) Pregnant Uterus 15) Mammory Glands (resting) 16)Mammory Glands (active) 17) Comparison of Structures 18) Practical |
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Corpus
Luteum
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#176 - Ovary, corpus luteum, human, h.-e., 1.5 mm, sec. # 177 - Corpus luteum of pregnancy, human, sec., h.-e. |
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Distinguish between the granulosa lutein cells and the theca lutein cells. What are the origins and functions of these two cell types? REFERENCES: Gartner, pp. 346 - 347Ross, pp. 689, 718 - 719 |
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Here is a low power image of the ovary. Of interest is what the blue arrow is pointing to, which is an area of whitish puffy cells known as the Corpus Luteum. After ovulation the granulosa and luteal cells turn into the hormone secreting corpus luteum.
Blue arrow - Corpus Luteum
Here is a closer look at the Corpus Luteum. In this stain the color is not as white as the last image but it is still the same structure. The blue arrows are pointing to the Thecal Lutein cells. These are the cells from the Theca interna that now creep in and almost look like trabeculae. The rest of the view, is the Granulosa Lutein cells. So the Corpus luteim is composed of a good number of Granulosa Letien cells with thecal lutein cells that look like the trabeculae of the corpus luteum.
Blue arrow - Thecal Lutein Cells
Here is a closer look at the cells that make up the Corpus Luteum. The blue arrows are pointing to the Granulosa Lutein cells. Can you notice the "puffy" characteristic of the cells that are located here. These cells function to produce Progesterone. The red arrows are pointing to the Thecal Lutein cells. Again notice how they look like a "trabeculae" of the granulosa lutein cells. They function to secrete Estrogen. Blue arrows - Granulosa Lutein cells Red arrows - Thecal Lutein cells
Here is a high magnification shot of the cells of the corpus luteum. The blue arrows are pointing to the Granulosa Lutein cells. Here you get a really good feel for their "puffy" or "bloated" appearance. The red arrows are pointing to the Theca Lutein cells. These two types of cells opposed to each other are characteristic of the corpus luteum, the "puffy" appearance of the granulosa lutein cells and the fibrous, "trabeculae" appearance of the theca lutein cells. Red arrows - Theca Lutein Cells Blue arrow - Granulosa Lutein cells |
Corpus Luteum
Corpus Luteum
Corpus Luteum (theca and granulosa luteal cells)
Theca and Granulosa Luteal Cells |
