What is the main function of the vagina in the female reproductive system?

What is the role of surfactant in the newborn’s lungs?

Which hormone is released during childbirth to enhance uterine contractions?

What is the primary action of antidiuretic hormone (ADH)?

What triggers the initiation of labor?

What is formed when the sperm and ovum nuclei unite?

Which structure eventually surrounds the entire embryo and contributes to the placenta?

What is the primary significance of gastrulation?

What prenatal test is used to detect genetic abnormalities?

What is the primary role of the yolk sac in early development?