Ovary and Uterus

What are the components of the cortex in the ovary

• Cortical stroma

• Developing follicles

What are the components of the medulla in the ovary

• Richly vascularized loose connective tissue

• contains alot of vessels

Where is the medulla located in the horses

the horse’s medulla is found outside

What is the first step in follicle development

primordial follicle

What is the second step of follicle development

primary follicle

What is the third step of follicle development

secondary follicle

What is the last step of follicle development

antral follicle

What is the function of the granulosa cells in the ovary

produce estrogen

• Produce estrogen for follicle maturation and egg development

What is the function of the theca cells in the ovary

produces testosterone

• Produce testosterone which is converted into estrogens by neighboring granulosa cells

What is the function of the luteral cells in the ovaries

produce progesterone

• Granulosa and theca cells differentiate into luteal cells after ovulation

• Produce progesterone to maintain pregnancy

What is the function of LH

• Drive ovulation (release of the mature egg)

• Maintain the corpus luteum

What does LH stimulate

• Stimulate theca cells

What is the function of Follicle-stimulating hormone (FSH)

• Growth and maturation of the ovarian follicles

What does Follicle-stimulating hormone (FSH) stimulate

• Stimulates granulosa cells

Describe the histology of Primordial follicle:

• Primary oocyte surrounded by simple squamous granulosa cells

Describe the histology of Primary follicle:

• Enlarging oocyte surrounded by simple cuboidal granulosa cells

Describe the histology of Secondary follicle:

• Oocyte with zona pellucida (eosinophilic, translucent membrane)

• Multilayer of granulosa cells

• C-shaped, fluid filled antrum

• Sheath of stromal theca cells surround the follicle

Describe the histology of Tertiary (mature) follicle:

• Oocyte with zona pellucida (eosinophilic, translucent membrane)

• Multilayer of granulosa cells

• Large, fluid filled antrum

• Sheath of stromal theca cells surround the follicle

Describe the histology of Corpus luteum

• After ovulation, granulosa and theca cells multiple, hypertrophy, and differentiate into luteal cells

What are the three layers of the ovary

• Perimetrium

• Myometrium

• Endometrium

What is the function of the ovaries

• Embryo implantation and nourishment

• Fetal development (gestations)

• Parturition

What is the luteal cells

• After ovulation, granulosa and theca cells multiple, hypertrophy, and differentiate into luteal cells

• Form the corpus luteum

Describe the histology/epithelium of the endometrium

• Simple columnar mucosal epithelium

Does the myometrium contain smooth muscle?

yes: Smooth muscle

Describe the histology of the

• Inner circular and outer longitudinal

• Stratum vasculare separates the muscle layer

Describe the histology of the Perimetrium

• Mesothelium (simple squamous epithelium)

• CCT

Describe the stratum vasculare

• Right vascularized and well innervated layer between the muscle layers

Describe the Endometrial Gland epithelium

• Simple columnar epithelium

What is the function of the Endometrial Gland

• Provide nutrition to developing fetus