Chapter 28: Development (Rio Salado) exam 2023 with 100% correct answers

What germ layer gives rise to essentially all body tissues except nervous tissue, epidermis, & mucosae? correct answersmesoderm The ____ period begins at the end of 8 weeks gestation correct answersfetal What causes the difficulty breathing that some women experience during pregnancy? What causes the waddling gait seen in some? correct answersDiff. breathing is due to the fact that the uterus is pressing against and crowding the diaphragm (hence the lungs), waddling is due to the relaxing effect of relaxin on the pelvic ligaments & pubic synthesis. What is the cause of morning sickness? correct answerscause is mostly unknown but it is believed that the rise of hCG is the culprit What is breech presentation? correct answersbuttock-first presentation of the fetus in labor baby is backwards What chemical is most responsible for triggering true labor? correct answersprostaglandins What hormone causes the let-down reflex? correct answersoxytocin Cleavage or Gastrulation: Period where morula forms?