A urine test reveals a positive result for human chorionic gonadotropin (hCG). This indicates ________ was successful.
A) gastrulation
B) fertilization
C) ovulation
D) implantation
(
Question 2) Which of the following is true in reference to what may pass through the placental barriers?
A) hormones, blood cells, and nutrients
B) nutrients and respiratory gases only
C) respiratory gases, hormones, nutrients, and blood cells
D) nutrients, respiratory gases, wastes, and alcohol
(
Question 3) At what point is meiosis II completed for the female gamete?
A) ovulation
B) fertilization
C) implantation
D) puberty
(
Question 4) Select the correct statement about the special fetal blood vessels.
A) The distal parts of the umbilical arteries form the superior vesical arteries.
B) The umbilical vein becomes the ligamentum teres.
C) The hepatic portal vein forms from the umbilical artery.
D) The fossa ovalis becomes the foramen ovale.
(
Question 5) Which of the choices below occurs if implantation is successful?
A) The ovarian cycle begins.
B) The corpus luteum is maintained until the placenta takes over its hormone-producing functions.
C) The corpus luteum degenerates and becomes the corpus albicans.
D) Increased levels of FSH will be produced.
(
Question 6) Derivatives of the endoderm include ________.
A) epithelial lining of the respiratory tract
B) brain and spinal cord
C) heart and blood vessels
D) kidneys and gonads
(
Question 7) At which stage of labor is the afterbirth expelled?
A) placental
B) expulsion
C) dystocia
D) full dilation
(
Question 8) Sperm move to the uterine tube through uterine contractions and the energy of their own flagella. What other factor is involved in sperm movement?
A) reverse peristalsis of the uterus and uterine tubes
B) the cilia on the apex of the cells lining the endometrium
C) hormonal attraction to the ova
D) the increased temperature in the vagina, which stimulates sperm motility
(
Question 9) The cardiovascular system of a newborn must be adjusted after the infant takes its first breath. Which of the following is also true?
A) The ductus arteriosus constricts and is converted to the ligamentum arteriosum.
B) The urinary system is activated at birth.
C) The foramen ovale between the atria of the fetal heart closes at the moment of birth.
D) The ductus venosus is disconnected at the severing of the umbilical cord and all visceral blood goes into the vena cava.
(
Question 10) The trophoblast is mostly responsible for forming the ________.
A) placental tissue
B) allantois
C) lining of the endometrium
D) archenteron
Quick Reply
