Textbook Question
Indicate the type of inheritance involved in each of the following situations.
(a) Children who exhibit the trait have at least one parent who also exhibits it.
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Ch. 29 Development and Inheritance
Martini, Nath, Bartholomew12th EditionFundamentals of Anatomy and PhysiologyISBN: 9780137854011
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Table of contents
- Ch. 1 An Introduction to Anatomy and Physiology25
- Ch. 2 The Chemical Level of Organization34
- Ch. 3 The Cellular Level of Organization29
- Ch. 4 The Tissue Level of Organization24
- Ch. 5 The Integumentary System17
- Ch. 6 Bones and Bone Structure33
- Ch. 7 The Axial Skeleton11
- Ch. 8 The Appendicular Skeleton17
- Ch. 9 Joints13
- Ch. 10 Muscle Tissue12
- Ch. 11 The Muscular System28
- Ch. 12 Nervous Tissue18
- Ch. 13 The Spinal Cord, Spinal Nerves, and Spinal Reflexes22
- Ch. 14 The Brain and Cranial Nerves20
- Ch. 15 Sensory Pathways and the Somatic Nervous System17
- Ch. 16 The Autonomic Nervous System and Higher-Order Functions30
- Ch. 17 The Special Senses15
- Ch. 18 The Endocrine System21
- Ch. 19 Blood31
- Ch. 20 The Heart31
- Ch. 21 Blood Vessels and Circulation26
- Ch. 22 The Lymphatic System and Immunity25
- Ch. 23 The Respiratory System4
- Ch. 24 The Digestive System18
- Ch. 26 The Urinary System31
- Ch. 27 Fluids & Electrolytes30
- Ch. 28 The Reproductive System12
- Ch. 29 Development and Inheritance17
Martini, Nath, Bartholomew12th EditionFundamentals of Anatomy and PhysiologyISBN: 9780137854011Not the one you use?Change textbook
Chapter 28, Problem 19
Name the primary placental hormones and their functions.
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Identify the primary placental hormones, which include human chorionic gonadotropin (hCG), human placental lactogen (hPL), progesterone, and estrogen.
Explain the function of human chorionic gonadotropin (hCG): it maintains the corpus luteum during early pregnancy, ensuring continued production of progesterone to support the uterine lining.
Describe the role of human placental lactogen (hPL): it modifies the metabolic state of the mother to facilitate energy supply to the fetus, including promoting lipolysis and reducing maternal glucose use.
Discuss the function of progesterone produced by the placenta: it maintains the uterine lining, inhibits uterine contractions to prevent premature labor, and supports fetal development.
Explain the role of placental estrogen: it promotes uterine growth, increases blood flow to the uterus, and stimulates the development of mammary glands in preparation for lactation.
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Key Concepts
Here are the essential concepts you must grasp in order to answer the question correctly.
Primary Placental Hormones
These are hormones produced by the placenta during pregnancy, including human chorionic gonadotropin (hCG), progesterone, and estrogen. They play crucial roles in maintaining pregnancy and supporting fetal development.
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3:22
Placentation – Weeks 2-3
Functions of Human Chorionic Gonadotropin (hCG)
hCG is responsible for maintaining the corpus luteum in early pregnancy, which ensures continued production of progesterone to sustain the uterine lining and prevent menstruation.
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1:04Implantation Example 2
Roles of Progesterone and Estrogen in Pregnancy
Progesterone maintains the uterine lining and inhibits uterine contractions, while estrogen promotes uterine growth and blood flow, preparing the body for labor and fetal nourishment.
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0:55Anatomy of the Female Reproductive System Example 4
Related Practice
Textbook Question
A normally pigmented woman whose father was an albino marries a normally pigmented man whose mother was an albino. What is the probability that they would have an albino child?
(a) 50 percent
(b) 25 percent
(c) 12.5 percent
(d) 6.25 percent
(e) 100 percent
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Textbook Question
Problems involving the formation of the chorion would affect
(a) The embryo’s ability to produce blood cells
(b) The formation of limbs
(c) The embryo’s ability to derive nutrition from the mother
(d) Lung formation
(e) The urinary system
Textbook Question
Hemophilia A, a condition in which blood does not clot properly, is a recessive trait located on the X chromosome (Xʰ). Suppose that a woman who is heterozygous for this trait (XXʰ) has children with a normal male (XY). What is the probability that the couple will have daughters with hemophilia? What is the probability that the couple will have sons with hemophilia?
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Textbook Question
After implantation, how does the developing embryo obtain nutrients? What structures and processes are involved?
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Textbook Question
Distinguish between the following paired terms:
(b) heterozygous and homozygous,
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