Anatomy & Physiology
1st Edition
ISBN: 9781938168130
Author: Kelly A. Young, James A. Wise, Peter DeSaix, Dean H. Kruse, Brandon Poe, Eddie Johnson, Jody E. Johnson, Oksana Korol, J. Gordon Betts, Mark Womble
Publisher: OpenStax College
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Textbook Question
Chapter 28, Problem 17RQ
During weeks 9–12 of fetal development, ________.
- bone manow begins to assume erythrocyte production
- meconium begins to accumulate in the intestines
- surfactant production begins in the fetal lungs
- the spinal cord begins to be myelinated
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21 Label Figure 16.41 with the terms below.
O Amnion
O Amniotic cavity
O Chorion
O Chorionic villi
O Maternal arteries and veins
O Placenta
O Placental sinus
O Umbilical arteries
O Umbilical vein
O Yolk saç
00
FIGURE 16.41 Embryo in uterus
Label name correctly
Blood islands are ________.a. clusters of blood-filtering cells in the placentab. masses of pluripotent stem cells scatteredthroughout the fetal bone marrowc. vascular tubes that give rise to the embryonictubular heart
d. masses of developing blood vessels and formedelements scattered throughout the embryonic disc
Chapter 28 Solutions
Anatomy & Physiology
Ch. 28 - View this time-lapse movie...Ch. 28 - Visit this site...Ch. 28 - Sperm and ova are similar in terms of ________....Ch. 28 - Although the male ejaculate contains hundreds of...Ch. 28 - As sperm first reach the oocyte, they will contact...Ch. 28 - Fusion of pronuclei occurs during ________....Ch. 28 - Sperm must first complete ________ to enable the...Ch. 28 - Cleavage produces daughter cells called ________....Ch. 28 - The conceptus, upon reaching the uterus, first...Ch. 28 - The inner cell mass of the blastocyst is destined...
Ch. 28 - Which primary germ layer gave rise to the cells...Ch. 28 - What would happen if the trophoblast did not...Ch. 28 - During what process does the amnion envelop the...Ch. 28 - The placenta is formed from ________. the embryos...Ch. 28 - The foramen ovale causes the fetal circulatory...Ch. 28 - What happens to the urine excreted by the fetus...Ch. 28 - During weeks 9–12 of fetal development,...Ch. 28 - Progesterone secreted by the placenta suppresses...Ch. 28 - Which of the following is a possible culprit of...Ch. 28 - How does the decrease in progesterone at the last...Ch. 28 - Which of these fetal presentations is the easiest...Ch. 28 - Which of these shunts exists between the right and...Ch. 28 - Why is brown fat important? It is the newborns...Ch. 28 - Constriction of umbilical blood vessels during...Ch. 28 - Alveoli are connected to the lactiferous sinuses...Ch. 28 - How is colostrum most important to a newborn? It...Ch. 28 - Mature breast milk ________. has more sodium than...Ch. 28 - Marfan syndrome is inherited in an autosomal...Ch. 28 - In addition to codominance, the ABO blood group...Ch. 28 - Zoe has cystic fibrosis. Which of the following is...Ch. 28 - Darcy and Raul are having difficulty conceiving a...Ch. 28 - Sherrise is a sexually active college student. On...Ch. 28 - Approximately 3 weeks after her last menstrual...Ch. 28 - The Food and Nutrition Board of the Institute of...Ch. 28 - What is the physiological benefit of incorporating...Ch. 28 - Why would a premature infant requite supplemental...Ch. 28 - Devin is 35 weeks pregnant with her first child...Ch. 28 - Janine is 41 weeks pregnant with her first child...Ch. 28 - Describe how the newborns fust breath alters the...Ch. 28 - Newborns are at much higher risk for dehydration...Ch. 28 - Describe the transit of breast milk from...Ch. 28 - A woman who stopped breastfeeding suddenly is...Ch. 28 - Explain why it was essential that Mendel perform...Ch. 28 - How can a female carrier of an X-linked recessive...
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- The placenta is formed from ________. the embryos mesenchymal cells the mothers endometrium only the mothers endometrium and the embryos chorionic membrane the mothers endometrium and the embryos umbilical cordarrow_forwardCleavage produces daughter cells called ________. trophoblasts blastocysts morulae blastomeresarrow_forwardWhich of these produces blood cells and germ cells at the early stages of fetal development? O Amnion O Placenta O Yolk sac O Allantoisarrow_forward
- Developing fetuses obtain nutrients from their parent’s bloodstream via diffusion (Figure 1). Fetal blood enters arteries in the placenta, which branch into villus capillaries. Parental blood passes through the spiral arteries in the placenta and enters the intervillous space. Membrane transport happens across the villus. In the first trimester of pregnancy, the total surface area of villus capillaries is ~1.5m2, and the thickness of the villus is ~170μm. During the third trimester, the total surface area of the villus capillaries increases to ~12m2, and the thickness of the villus shrinks to ~40μm. Using Fick’s Law of Diffusion, estimate how many times greater uteroplacental blood flow (mL/min) is in the third trimester compared to the first trimester. Briefly explain how you reached your answer.arrow_forwardStages in Fetal Development 1. First trimester 2. Second trimester 3. Third trimester Match four of the fetal developments listed below with the appropriate trimester numbered above. Fetal Development Number Heart is formed and begins to pump. Bone marrow is only site of red blood cell production. Heartbeat can be heard with a stethoscope. Yolk sac produces the blood cells.arrow_forwardChorionic vill Yolk sac 3 (Maternal portion of placenta) (Fetal portion of placenta) Amniotic fluid in amniotic cavity Allantois Umbilical cord Matornal endometrial venule Umbilical cord: Chorion Amnion Intorvilus space Matornal . endometrial arteriole 2- Amnion (a) 12m wook of dovolopmont - Umbilical cord • chorion chorionic villi -Amnion covering fetal surface of Placenta decidua basalis fetal blood vessels umbilical arteries • umbilical vein 4 - Umbilical artorios - Umbilical vein (D) Fetal surface of placenta y dutoogd por uopunda Mark Nielsenarrow_forward
- Lable itarrow_forwardResetHelp fossa ovalis ligamentum teres ligamentum arteriosum median umbilical ligaments ligamentum venosum The umbilical arteries in the fetus become the__________ in the newborn. In the newborn, the foramen ovale transitions to a wall-like depression called the_________ . After birth, the umbilical vein will become the__________ . After birth, the ductus arteriosus becomes the__________ . The fetal ductus venosus will form the __________ in the newborn.arrow_forwardAnd where does this goes - the mother is able to feel the baby begin to move - early in this period it is possible to determine the sex of the baby - at the end of this period, the baby is around 12 inches longarrow_forward
- Please explain itarrow_forwardCyanosis of the feet and hand is considered normal in the 1st 24 hours because: a. The quantity of oxygen bound to hemoglobin are greater in the fetal circulation b. The lungs after birth is Oxygenated by the newborn own blood that was formerly oxygenated by the placenta c. Because newborn has difficulty adjusting the outside environment d. The peripheral circulation of a newborn remains sluggisharrow_forward20arrow_forward
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