The female reproductive system p .2

Female Reproductive System
Oviduct
? The oviducts are paired, i2-cm-Iong tubes that have four subdivisions.
- lnfundibuhun. Funnel-shaped, free end with finger-like fimbria
embracing the ovary
- Ampulla. Thin walled, lateral two-thirds; fertilization occurs here near its junction with the isthmus
- Isthmus. Thicker walled, medial one-third
- Intramural (interstitial). Within uterine wall; lumen is continuous with uterine lumen.
Structure:
?Mucosa
Shows gradations from infundibulum to intramural subdivisions
- Exhibits complex mucosal folds
- Epithelium. Simple columnar composed of ciliated cells, that are most abundant in thelnfundibulum, and secretory cells, that are most abundant in the intramural portion
- Muscularis n1ucosae is lacking.
Submucosa is continuous with lamina propria, forming a continuous
connective tissue layer.
- Muscularis externa has poorly defined inner circular and outer
longitudinal
smooth muscle layers, which are thinnest in the infundibulum
and thickest in the intramural portion.
- Serosa. Covers the outer surface except in the intramural portion
Uterus
Cl OSS Anatomy
- A single, pear-shaped, ·and pear-sized organ
- Subdivisions
- Fundus. Domed portion above entrance of oviducts
- Corpus or body. Major portion of the uterus
- Isthmus. Co