PSYB32H3 Chapter Notes - Chapter 3: Rh Blood Group System, Intellectual Disability, Gestational Age
Document Summary
The ovum, or egg on released from the mother"s ovaries, lives oly about 3 to 5 days. Prenatal devlopmental ---eoncompasses the 38 weeks 9 months. [regnancy has been described as occurring in 3 periods of 3 months each. Proceeds down the mother"s fallopian tube and implants in the wall of the uterus. Gradually,, tendrils from the zygote penetrate the blood vessels in the wall of the uterus. Zygote forms the physiological d ependence with the mother. Once the zygote is firmly implanted in the mother"s uterus. --developing organism between the second and eighth weeks of gestation, period of the embryo comprises the differentiation of the major phsyiologicla structures and sytems. Gestation---carrying of an embryo or fetus during pregnancy usually for nine months in humans. Organism"s most important physiological structures and systems become differentiated, and embryo becomes recognizable as a tiny human being. 3 strucutures develop to protect and support the growing life within the mother"s uterus.
