Biology Forums - Study Force

1) Which row correctly identifies the function and source of hCG, respectively?

a.Function                                Source
Stimulates FSH                  Anterior pituitary

b.Function                                    Source
Aids implantation                       Uterus

c. Function                                      Source
Stimulates estrogen
Ovary

d. Function                                             Source
Maintains corpus luteum        Trophoblast and 
                                                            .     placenta

2) SEE TWOO FIRST IMAGES TO ANSWER

A) Which of the following graphs illustrates the cyclical variation in progesterone levels for a nonpregnant woman who is taking oral contraceptive?

B) Which of the numbered graphs above illustrates the cyclical variation in progesterone levels for a woman who recently got pregnant?



3) SEE THIRD IMAGE

4) During the embryonic development, the trophoblast will develop into

a. the embryonic disc

b. the yolk sac

c. the chorion

d. the amnion and amniotic cavity


5) Which of the following statements about gastrulation is correct? 


a.The formation of the endoderm, mesoderm, and ectoderm occurs before gastrulation.

b.During gastrulation, the contents of cell nuclei begin to vary so that they can start to perform different functions.

c.During gastrulation, cells begin to vary so that they can start to perform different functions.

d.The formation of the endoderm, mesoderm, and ectoderm occurs after gastrulation.




6) Which of the following materials do not cross the placenta from the mother’s blood system to the baby’s blood system?

a. Red blood cells

b. Alcohol, nicotine, pathogens

c. Glucose, vitamins, hormones

d. Antibiotic medication for infections


7) hCG, estrogen and progesterone are hormones that are secreted throughout pregnancy.  Answer the following questions about these hormones.

A) Identify the structure that initially secretes hCG

B( Describe the function of hCG and identify the trimester where the hCG level is the highest

C) What are the roles of estrogen & progesterone in pregnancy

D)What structure initially secretes estrogen & progesterone?

E) What structure takes over the role of secreting hCG, estrogen & progesterone in the second and third trimesters?




8) SEE 4 IMAGE


9) Draw and label a diagram of a 7 week baby in utero.
Your diagram should include the following extra embryonic structures: chorion, amniotic cavity, allantois, endometrium, amnion, yolk sac, & developing placenta.






10) Encloses and protects the embryo and fetus from temperature fluctuations and trauma
Will form the umbilical cord and become part of the urinary bladder.
Provides nutrients and blood circulation for the first 2 weeks of gestation.
Is developed from the trophoblast layer of the blastocyst and forms the fetal portion of the placenta

Match the following numbered functions above with the correct structures listed below.

Number:  Answer.      Answer.   Answer.     Answer
Structure:  Chorion   Allantois  Yolk sac    Amnion

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Thanks you were missing some questions

Hi, sorry!

Could you copy-paste those questions?

Thank you so much