The zygote grows rapidly to about one half inch. During this time, the heart starts beating and the veins and arteries is active. Organs, such as the brain, kidneys, and liver begin to grow. The microscope detects the eyes, ears, mouth and nose, but the sex is not detectable (Matorell, Papalia, & Feldman, 2014).
7 Weeks:
The baby is one-inch long and organs begin functioning; the liver produces blood cells, the stomach produces digestive juices, and the heart has a regular beat. The baby has developed a transparent skin layer, including hand and footprints and is sensitive to tactile stimulation. Toes, finger, knees, and thumbs are seen (Matorell, Papalia, & Feldman, 2014).
3 Months:
The baby is three inches long, nails and eyelids …show more content…
During the third to ninth week of gestation, teratogens pose that largest risk, causing significant defects, and possibly spontaneous abortion (Bennett, 2015). Although the causative agent is the biggest contributor to the defect, the teratogen may work in concert with the genetic makeup of parents and child. It is recommended that women reduce or eliminate ingestion or contact with teratogens will pregnant, but this is not always possible due to medications for pre-existing …show more content…
“Father’s frequent and positive involvement with his child, from infancy on, is directly related to the child’s well-being, and physical, cognitive, and social development” (Matorell, Papalia, & Feldman, 2014, p.139). During the pregnancy, the father’s level of the hormone testosterone decreases to the father prepare for the birth of their child and to assist engagement of parenting behaviors (Matorell, Papalia, & Feldman, 2014). Fathers that are present during the delivery of their child also experience euphoria and increased attachment to the child (Matorell, Papalia, & Feldman,