Human Embryology Exam 1 UPDATED Actual Exam Questions and CORRECT Answers
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Course
Human Embryology
Institution
Human Embryology
Human Embryology Exam 1 UPDATED
Actual Exam Questions and CORRECT
Answers
GnRH is produced by the _________ - CORRECT ANSWER- hypothalamus
LH and FSH are produced by the _______ - CORRECT ANSWER- anterior pituitary
Estrogen and progesterone are produced by the ________ - CORRECT ANSWER-
ov...
Human Embryology Exam 1 UPDATED
Actual Exam Questions and CORRECT
Answers
GnRH is produced by the _________ - CORRECT ANSWER✔✔- hypothalamus
LH and FSH are produced by the _______ - CORRECT ANSWER✔✔- anterior pituitary
Estrogen and progesterone are produced by the ________ - CORRECT ANSWER✔✔-
ovaries
early development of follicle is induced by _______ - CORRECT ANSWER✔✔- FSH
theca interna produce __________ which follicular cells convert into ________ - CORRECT
ANSWER✔✔- androgens
estrogen
ovulation is triggered by a surge in ______ - CORRECT ANSWER✔✔- LH
corpus luteum secretes ___________ and some __________ - CORRECT ANSWER✔✔-
progesterone
estrogen
____________ and especially ___________ prepare endometrial lining of uterus -
CORRECT ANSWER✔✔- Estrogen
progesterone
____ produced by syncytiotrophoblast which prevents degeneration of corpus luteum -
CORRECT ANSWER✔✔- hCG
___________ stimulates gland production - CORRECT ANSWER✔✔- Progesterone
,The process that establishes all three germ cell layers is ______________________ -
CORRECT ANSWER✔✔- gastrulation
Which of the following are results of the process of gastrulation?
A. Axial orientation is established
B. Bilaminar disc is transformed into a trilaminar disc
C. Both
D. Neither - CORRECT ANSWER✔✔- C. Both
The first morphologic change of gastrulation is the formation of the
_______________________. - CORRECT ANSWER✔✔- Primitive Streak
The primitive streak initially appears as a thickened linear band of which of the following?
A. Epiblast
B. Hypoblast - CORRECT ANSWER✔✔- A. Epiblast
The primitive streak elongates by adding cells to its ___________ end.
A. Proximal
B. Caudal - CORRECT ANSWER✔✔- A. Proximal
The cranial end of the primitive streak forms the ____________ and has a depressed area in
this region termed the ___________________. A groove also develops termed the primitive
groove. - CORRECT ANSWER✔✔- primitive node
primitive pit
Some cells of the primitive streak detach and forms mesenchymal cells that are the precursors
for connective tissue structures such as bone, cartilage, muscle, tendons, ligaments, and the
dermis of the skin.
A. True
B. False - CORRECT ANSWER✔✔- A. True
, The embryonic endoderm develops from the epiblast, primitive streak and node that displace
the hypoblast.
A. True
B. False - CORRECT ANSWER✔✔- A. True
Which of the following derives from the embryonic endoderm?
A. Epithelial cells of GI tract
B. Epithelial cells of respiratory tract
C. Both
D. Neither - CORRECT ANSWER✔✔- C. Both
The remaining cells in the epiblast that are not fated to become mesoderm and endoderm
form the embryonic ectoderm.
A. True
B. False - CORRECT ANSWER✔✔- A. True
Which of the following is NOT derived from embryonic ectoderm?
A. Neural crest cells
B. Central nervous system
C. Bone and muscle
D. Epidermis of skin - CORRECT ANSWER✔✔- C. Bone and Muscle
Normally the primitive streak degenerates in the caudal region. If remnants persist a large but
benign growth termed a _______________ can be present in the newborn. - CORRECT
ANSWER✔✔- sacrococcygeal teratoma
Mesenchymal cells that grow cranially from the primitive streak in between the endoderm
and ectoderm until it reaches the landmark the prechordal plate is the
___________________. - CORRECT ANSWER✔✔- notochordal process
The prechordal plate is the primordium for which of the following?
A. Cloacal membrane
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