BIOL 2302 Exam 4 (Chapter 28: Pregnancy and Human
Development) Part 3 of Exam 4. Main Chapter Questions
With Complete Solutions
Implantation of the blastocyst is the result of all of the following
EXCEPT ________.
phagocytosis by the trophoblast cells
Which of the following is true in reference to what may pass
through the placental barriers?
nutrients, respiratory gases, wastes, and alcohol
Which of the choices below occurs if implantation is successful?
The corpus luteum is maintained until the placenta takes over its
hormone-producing functions.
A urine test reveals a positive result for human chorionic
gonadotropin (hCG). This indicates ________ was successful.
implantation
A friend confides that she desires to have children but is having
trouble conceiving. Which of the following is true regarding
implantation?
It is estimated that a minimum of two-thirds of all zygotes
formed fail to implant by the end of the first week or
spontaneously abort.
Human chorionic gonadotropin (hCG) is at its highest levels
________.
, about 2 months after implantation during the 8th gestational
week
The most common assisted reproductive technology process
used by couples having difficulty conceiving is _______.
in vitro fertilization
Which of the following events does NOT occur during the first 8
weeks of development?
myelination of the spinal cord
Which of the following is NOT a correct matching of a fetal
structure with what it becomes at birth?
ductus arteriosus-ligamentum teres
Gastrulation begins when a groove with raised edges called the
________ appears on the dorsal surface of the embryonic disc.
primitive streak
Muscle tissue is formed by the ________.
mesoderm
Neural tissue is formed by the ________.
ectoderm
The cardiovascular system of a newborn must be adjusted after
the infant takes its first breath. Which of the following is also
true?
The ductus arteriosus constricts and is converted to the
ligamentum arteriosum.
Development) Part 3 of Exam 4. Main Chapter Questions
With Complete Solutions
Implantation of the blastocyst is the result of all of the following
EXCEPT ________.
phagocytosis by the trophoblast cells
Which of the following is true in reference to what may pass
through the placental barriers?
nutrients, respiratory gases, wastes, and alcohol
Which of the choices below occurs if implantation is successful?
The corpus luteum is maintained until the placenta takes over its
hormone-producing functions.
A urine test reveals a positive result for human chorionic
gonadotropin (hCG). This indicates ________ was successful.
implantation
A friend confides that she desires to have children but is having
trouble conceiving. Which of the following is true regarding
implantation?
It is estimated that a minimum of two-thirds of all zygotes
formed fail to implant by the end of the first week or
spontaneously abort.
Human chorionic gonadotropin (hCG) is at its highest levels
________.
, about 2 months after implantation during the 8th gestational
week
The most common assisted reproductive technology process
used by couples having difficulty conceiving is _______.
in vitro fertilization
Which of the following events does NOT occur during the first 8
weeks of development?
myelination of the spinal cord
Which of the following is NOT a correct matching of a fetal
structure with what it becomes at birth?
ductus arteriosus-ligamentum teres
Gastrulation begins when a groove with raised edges called the
________ appears on the dorsal surface of the embryonic disc.
primitive streak
Muscle tissue is formed by the ________.
mesoderm
Neural tissue is formed by the ________.
ectoderm
The cardiovascular system of a newborn must be adjusted after
the infant takes its first breath. Which of the following is also
true?
The ductus arteriosus constricts and is converted to the
ligamentum arteriosum.
