Histo Lec Long Quiz

Question 1

The bilaminar disc consists of the following cells:

Answer 1

Epiblast and hypoblast

Question 2

A substance produced by the seminal vesicle responsible for uterine contractions allowing sperm cells to move within the female reproductive tract.

Answer 2

Prostaglandins

Question 3

The type of uterine muscle contraction described in the previous item (#2).

Answer 3

Retropulsion

Question 4

The oocyte stage of development released during ovulation

Answer 4

Secondary, metaphase II

Question 5

FSH stimulates these cells to promote the conversion of cholesterol into androgens

Answer 5

Thecal cells

Question 6

Which
correct order of events during the ovulatory cycle?

Answer 6

Follicular, ovulation, luteal

Question 7

During the follicular phase, the Graafian
follicle arises in response to which of the ff?

Answer 7

FSH

Question 8

The LH surge is primarily responsible for which follicular cycle event?

Answer 8

Ovulation

Question 9

The Leydig cells when stimulated by LH:

Answer 9

Secretes testosterone

Question 10

The process of development of spermatids into mature spermatozoa

Answer 10

Spermiogenesis

Question 11

The ff are events during the proliferative phase of the menstrual cycle except:

Answer 11

Regeneration of s. Basalis cells

Question 12

The process of capacitation occurs:

Answer 12

In the female reproductive tract

Question 13

The substance in the antrum of the Graafian follicle

Answer 13

Hyaluronic acid

Question 14

The temporary structure formed
immediately after ovulation from the ovarian follicle as it collapses and is filled with blood that quickly clots

Answer 14

Corpus hemorrhagicum

Question 15

LH surge is caused by:

Answer 15

Cells of the Graafian follicle produce and secrete Inhibin B, which causes negative feedback on the gonadotropes of the anterior pituitary to secrete FSH, but ultimately causing positive feedback on LH production.

Question 16

The ff describes slow-block to polyspermy except:

Answer 16

The ff describes slow-block to polyspermy except:

Question 17

The product of fertilization

Answer 17

Zygote

Question 18

A microscopic ball or cluster of cells formed through cell division very early in the embryonic development consisting 16 or more cells.

Answer 18

Morula

Question 19

The hormone B-HCG is produced by which structure?

Answer 19

Syncytiotrophoblast

Question 20

B-HCG stimulates which structure in the ovary and what substance is produced upon stimulation

Answer 20

Corpus luteum: progesterone

Question 21

Complete the sequence: ICM → ? → bilaminar disc

Answer 21

Embryoblast

Question 22

. This structure originates from the anterior epiblast, and appears as an elongating cluster of cells on the dorsal midsagittal surface of the epiblast along the anterior- posterior axis of the embryo

Answer 22

Primitive streak

Question 23

. An embryonic midline structure common to all members of the phylum Chordata, providing both mechanical and signaling cues to the developing embryo

Answer 23

Notochord

Question 24

The cavity of the blastula

Answer 24

Blastocoel

Question 25

Epiblast cells that move into the primitive groove and down the hypomere replace this layer to become?

Answer 25

Endoderm

Question 26

FGF-8 stimulates epiblast cells to produce (?) that inhibits the formation of (?)

Answer 26

SNAIL-1: e-cadherins

Question 27

E-cadherin inhibition causes embryonic cells to

Answer 27

Become more differentiated and mobile

Question 28

A single cell or cytoplasmic mass containing several nuclei

Answer 28

Syncytium

Question 29

A series of mitotic division whereby the enormous volume of egg cytoplasm is divided into numerous, smaller, nucleated cells

Answer 29

Cleavage

Question 30

It refers to the exocytotsis of the acrosome or the fusion of the acrosomal membrane with the sperm’s plasma membrane

Answer 30

Acrosomal reaction