Fetal Development Timeline: Key Stages from 30 to 45 Days After Fertilization #94899 (License: Personal Use)

This black-and-white medical illustration shows four developmental stages of the human embryo/fetus: at 30 days (early neural tube and pharyngeal arches), 35 days (distinct limb buds and eye vesicles), 40 days (developing hands, feet, and facial structures), and 45 days (more defined head, limbs, and body proportions). Each stage is labeled with gestational age in days since fertilization, emphasizing rapid morphological changes during the embryonic period.

Used in prenatal education materials, obstetrics websites, biology textbooks, and fertility clinics to help patients and students understand early human development; matches user intent for visual learning about conception-to-birth timelines.