MHS 224 Ovary and Oviduct

MICROSCOPE SLIDE

SLIDE NAME

MHS 224 Ovary and Oviduct

TISSUES

Ovary
Oviduct
Mesentery

STAIN

Hematoxylin & Eosin

IMAGE SIZE

46,890 x 59,331 pixels
10.4 GB

FILE SIZE

459 MB

MAGNIFICATION

40x

PIXEL SIZE

0.3171 µm

SOURCE

Robert L. Sorenson

Ovary and oviduct surrounded by mesentery.

CONTACT

Questions or comments should be sent to
tcbrelje@gmail.com

This web site is owned and operated by:

T. Clark Brelje, Ph.D.
University of Minnesota
Department of Genetics, Cell Biology and Development
6-160 Jackson Hall
321 Church St SE
Minneapolis, MN 55455

Robert L. Sorenson, Ph.D.
University of Minnesota
Department of Genetics, Cell Biology and Development
6-160 Jackson Hall
321 Church St SE
Minneapolis, MN 55455

Version 4.2

© 2005-2019.
T. Clark Brelje and Robert L. Sorenson.
All rights reserved.

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MHS 224 Ovary and Oviduct

Ovary

The corpus luteum of the ovary develops from the collapsed follicle after ovulation under the influence of luteinizing hormone (LH) from the pituitary.

Capsule - covers the outer surface.

Germinal Epithelium - the surface is covered by a simple cuboidal epithelium.
Tunica Albuginea - layer of dense irregular connective tissue that supports the epithelium.

Cortex - outer region that is the site of oocyte development.

Ovarian Follicles - oocytes surrounded by one or more layers of cells.

Primordial Follicles - oocytes arrested in development located in the outer cortex.

Primary Oocyte - large (25 to 30 µm), round to oval cells with a vesicular nucleus.
Zona Pellucida - layer of glycoproteins between the oocyte and granulosa cells. It is visible a thin, eosinophilic band in many follicles.
Follicular Cells - single layer of flattened cells that surround each oocyte.

Primary Follicles - primary oocytes surrounded by one or more layers of cuboidal-shaped granulosa cells (which develop from follicular cells).

Unilaminar - primary oocytes surrounded by a single layer of granulosa cells.
Multilaminar - primary oocytes surrounded by multiple layers of granulosa cells.

Ovary

Corpus Luteum - a temporary endocrine organ that can grow to be 1 to 5 cm in diameter.

Its thick wall is composed of two types of cells:

Granulosa Lutein Cells - centrally located cells derived from granulosa cells. They form the majority of the corpus luteum.

Large cells (~30 µm diameter) with eosinophilic cytoplasm.
Secrete progesterone and convert androgens formed by theca lutein cells into estrogen.

Theca Lutein Cells - more peripherally located cells derived from theca interna cells.

Smaller cells (~15 µm diameter) more deeply stained than granulosa lutein cells.
Secrete androgens, progesterone and some estrogen.

Central Cavity - the blood and fibrin-containing clot has almost completely digested by macrophages at its periphery.

Atretic Follicles (#1 and #2) - follicles that fail to reach maturity and ovulation degrade by atresia. The disintegration of the granulosa stratum by apoptosis is an early event.
Medulla - inner region of fibroelastic connective tissue with many large, tortuous blood vessels, lymph vessels and nerve fibers.

Does not contain ovarian follicles.