Mammal, canine ovary (LM, Low)

Structure List Primordial follicle Primary follicle Secondary follicle Regressing corpora lutea Low Magnification View

The corpus luteum forms from the cells of the theca interna and the granulosa cells under the influence of the pituitary luteinizing hormone. Blood vessels and connective tissue grow into the luteal cells to form an endocrine gland which secretes progestins. Hormones from the corpus luteum will support fetal development during pregnancy. Afterwards it will become a scar (corpus albicans).