Midwifery - Anatomy And Physiology - Year 1 Questions & Answers (Rated A)

True or false? During pregnancy, the isthmus of the uterus enlarges to form the lower uterine segment? {Ans: True}Which are the smallest diameters of the fetal skull? {Ans: Submentobregmatic and the suboccipitobregmatic - 9.5cm}What is thought to cause the onset of labour? (Four hormones/gases) {Ans: Oestrogen - stimulates the placenta to release prostaglandin Progesterone - metabolises to oestrogen increasing uterine sensitivity to prostaglandins causing myometrial contractions Nitric oxide - produced by the placenta, causes smooth muscle relaxation Corticotrophin-releasing hormone - stimulates the placenta to produce prostaglandins}True or False? In embryology, by the end of week 6 all body systems are formed. {Ans: False}What is the physiological importance of resting between contractions? {Ans: Allows perfusion of the placenta and fetal recovery.}What is hyperstimulation? {Ans: More than 5 contractions in 10 minutes, in induced labour.}