Maternal Recognition and Fetal Membranes

The process by which an embryo signals its mother to modify her body in preparation for pregnancy.

The biochemical signals released by the embryo to communicate its presence to the mother.

Changes in hormone levels triggered by the embryo's signals that help sustain pregnancy.

The process of the embryo attaching itself to the uterine wall after maternal recognition.

The physiological adaptations that occur in the mother to support the developing embryo throughout gestation.

Mechanism using pumps to move sodium, potassium, and calcium across the placenta.

Process where trophoblastic cells engulf maternal plasma and solutes in vacuoles.

The placenta produces hormones that regulate pregnancy and fetal development.

Condition where the placenta obstructs the cervical canal, potentially blocking delivery.

Abnormal placenta attachment with chorionic villi invading the myometrium.

Three grades based on the level of invasion by chorionic villi into myometrium.

Separation of the placenta from the uterus prematurely, often leading to complications.

Exchange of nutrients, production of hormones, and protection of the fetus.

Placentas are classified by shape and type of barrier between blood supplies.

Conditions like previa, accreta, and abruption that disrupt safe birth.

The biochemical signals that the conceptus sends to the mother to indicate its presence and maintain pregnancy.

Hormone that keeps the uterus calm, allowing the embryo to implant properly.

The last day of the uterine migration phenomenon of a conceptus during early pregnancy.

Membranes developed to support the fetus by providing nutrients, oxygen, and protection against the mother's immune system.

The innermost fetal membrane enclosing the embryo, providing protection and accommodating growth.

An extraembryonic membrane that serves as the early site for blood formation and connects to the embryo's midgut.

Medical procedure used to collect amniotic fluid and cells for detecting genetic diseases and conditions during pregnancy.

Innermost layer of fetal membranes involved in the formation of the umbilical cord and waste collection.

The outermost layer of fetal membranes, which develops into the placenta.

An organ connecting the fetus to the mother's uterine wall for nutrient and waste exchange.

Type of placenta where almost the entire surface of the chorion contributes to placenta formation, seen in horses and pigs.

Type of placenta with multiple discrete attachment areas (cotyledons) interacting with the uterus, found in cows and sheep.

Placenta forms a band of tissue surrounding the fetus, complete or incomplete.

Supports pregnancy through nutrient uptake, gas exchange, and waste elimination for the fetus.

A placenta shaped like a disc, forming a single patch for nutrient exchange, common in humans.

A pregnancy complication with high blood pressure due to limited placental access.

The least invasive placenta type where chorion contacts uterine epithelium without maternal tissue loss.

A placenta type where uterine epithelium is locally eroded, allowing chorion to enter connective tissue.

A placenta type where chorion contacts maternal capillaries after eroding connective tissue.

The most invasive placenta type, with chorionic villi in direct contact with maternal blood.

A semi-permeable layer in the placenta that selectively allows substances to pass between maternal and fetal blood.

The process where substances move from high to low concentration without energy.

An enhanced rate of substance movement across a membrane, requiring specific proteins.