Maternity - Module 2 Study Guide
21 SEPTEMBER 2020
Agenda
Alex H. - ch 12 [229-248]
Liz - ch 13 [249-263]
Jess - ch 14 [264-297]
Tay/ Alex R. - ch
... [Show More] 25 [533-536 & 538-560]
Chapter 12 - Conception & Fetal development [229- 248]
*fertilization
*fetal development & Key milestones in fetal development
*amniotic fluid, placenta, umbilical cord + their functions within pregnancy
Terms Definition
Ovum An egg that matures & releases at ovulation. Fertile for approx 24 hrs.
Sperm Semen remains viable in female reproductive system for 2-3 days
Conception Union of single egg & sperm // marks the beginning of pregnancy
Fertilization Takes place in ampulla (outer third) of the uterine tube (fallopian tube)
Implantation Between 6-10 days after conception a blastocyst is embedded in the endometrium until fully recovered
Fetal Development & key milestones
● Pregnancy last approximately 10 lunar months, 9 calendar months, 40 weeks, or 280 days
● Heartbeat at 4 weeks.
○ By 12 weeks - kidneys able to excrete urine & sex fully recognizable
○ By 16 weeks - meconium in bowel
○ By 20 weeks - fetal movement is strong enough for mother to feel
○ After 32 weeks - lung surfactant present in developed alveoli
Functions of the Amniotic Fluid:
● Help maintain a constant fetal body temperature
● Serving as a source of oral fluid and a repository for waste
● Assisting in maintenance of fluid and electrolyte homeostasis
● Allows the fetus freedom of movement for musculoskeletal development
● Cushions the fetus from outside forces allowing pressure to be distributed from one side to another with minimal exertion on the fetus
● The weightless state of amniotic fluid allows the face and body of the fetus to develop symmetrically
● Auditory stimulation is provided by rhythmic sounds of the blood flow through the umbilical cord, and uterine sounds are transmitted in a muted form to the fetus
● Amniotic fluid has antibacterial factors to protect the fetus from infection, and (with adequate volume), facilitates normal fetal lung development
● Fluid keeps the embryo from tangling with membranes.
Functions of the Umbilical Cord:
●
Chapter 13 Anatomy & Physiology of pregnancy [249-263]
*Signs of pregnancy, probable, presumptive, and positive (page 262)
*Fundal height and how to measure [Show Less]