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(A) During the proliferative phase (follicular phase) of the menstrual cycle,the endometrium undergoes regeneration. $A$. The uterine glands are relat

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Corkscrew-shaped uterine glands

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(A) During the proliferative phase (follicular phase) of the menstrual cycle,the endometrium undergoes regeneration. $A$. The uterine glands are relatively straight and narrow during this phase,not corkscrew-shaped. Corkscrew-shaped (coiled) glands are characteristic of the secretory (luteal) phase. $B$. Ciliated cells are present in the endometrium. $C$. Mitosis of stromal cells is a hallmark of the proliferative phase as the tissue thickens. $D$. Straight arteries are present during the proliferative phase,which later become coiled spiral arteries in the secretory phase. Therefore,corkscrew-shaped uterine glands are the least present (or absent) during this phase.

Column-$A$	Column-$B$
$A$. Follicular phase	$i$. Release of secondary oocyte
$B$. Luteal phase	$ii$. Fully mature Graafian follicle
$C$. Menstrual phase	$iii$. Formation of corpus luteum
$D$. Ovulatory phase	$iv$. Breakdown of endometrium

Which one of the following is least present in the endometrium during the proliferative phase of the menstrual cycle?

Similar Questions

The following graph shows the relative concentrations of the four hormones present in the blood plasma of a woman during her menstrual cycle. Identify the hormones $A, B, C$ and $D$.

Which types of hormones regulate the menstrual cycle in humans?

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Match the Column-$A$ with Column-$B$:

Column-$A$ Column-$B$

$A$. Follicular phase $i$. Release of secondary oocyte

$B$. Luteal phase $ii$. Fully mature Graafian follicle

$C$. Menstrual phase $iii$. Formation of corpus luteum

$D$. Ovulatory phase $iv$. Breakdown of endometrium

Onset of menstruation is due to

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