The endometrium itself is divided into two layers, the stratum functionalis and stratum basalis. During the menstrual cycle, the stratum functionalis expands and
vascularizes
and is subsequently sloughed off during the process of menstruation, whereas the stratum basalis remains relatively constant.
Where is the stratum Functionalis?
The stratum functionalis is
adjacent to the uterine cavity
, develops from the stratum basalis, and is shed at menstruation.
What is the stratum Functionalis made of?
The stratum basalis layer is part of the lamina propria and is adjacent to the myometrium; this layer does not shed during menses. In contrast, the thicker stratum functionalis layer contains the glandular portion of the lamina propria and the
endothelial tissue
that lines the uterine lumen.
What are the three layers of the endometrium?
The endometrium undergoes changes in the late secretory phase with the development of the spiral arteries. The endometrium has three layers:
the outer (superficial) compact layer, the larger middle spongy layer, and the inner basal layer
.
What happens to stratum Functionalis during proliferative phase?
Proliferative Phase
Oestrogen causes the endometrial stroma to become deep and richly vascularised
. Simple tubular glands in the stratum functionalis open out onto the surface, and the endometrium thickens.
Where is the stratum corneum?
The stratum corneum is
the outer layer of your epidermis (skin)
. It’s made up of mostly keratin and lipids. The visible cells shed and are replaced from the lower epidermal layers.
What is the function of stratum Basalis?
Hint: The stratum basalis layer is the deepest tissue of the endometrium and is adjacent to the myometrium. It’s the constant layer of endometrium that doesn’t undergo conformational changes during the uterine cycle and its purpose is
to exchange tissue loss during menstruation
.
What do you call the monthly release of ovum?
Ovulation
is a phase in the menstrual cycle. … Specifically, ovulation is the release of the egg (ovum) from a woman’s ovary. Each month, between days six and 14 of the menstrual cycle, follicle-stimulating hormone causes follicles in one of a woman’s ovaries to begin to mature.
What is Stratum Compactum?
The stratum compactum is
nearest to the uterine cavity
and contains the lining cells and the necks of the uterine glands; its stroma is relatively dense. Superficial blood vessels lie beneath the lining cells.
What layer of uterus is shed?
Endometrium
. This is the inner lining. It is shed during your period.
What is the best size of endometrium?
A thick, receptive, nourishing uterine lining is the best possible environment for the embryo, and the ideal lining is
at least 7 to 8mm thick
and displays a “trilaminar” (or “three layered”) appearance on an ultrasound.
What are the types of endometrium?
The endometrium was classified in
4 types (0, 1, 2 and 3)
according to: the aspect of the myometria-endometrium and endometrium-endometrium interfaces, and the texture and thickness of the functional layer.
What is the deepest layer of the endometrium called?
Stratum basalis
: Also known as the basal layer, this is the deepest endometrial layer that sits against the myometrium. It does not change much throughout the cycle.
What is the difference between the stratum Functionalis and stratum basalis?
The endometrium itself is divided into two layers, the stratum functionalis and stratum basalis. During the menstrual cycle, the
stratum functionalis expands and vascularizes and is subsequently sloughed off during
the process of menstruation, whereas the stratum basalis remains relatively constant.
What is Stratum Spongiosum?
The stratum spongiosum is
the large middle layer
. It contains the main portions of uterine glands and accompanying blood vessels; the stromal cells are more loosely arranged and larger than in the stratum compactum.
What is a corpus luteum?
The corpus luteum is a
vital yet temporary organ
that plays a crucial role in fertility during the luteal phase. It is an endocrine structure in females existing within the ovary once the ovarian follicle has released a mature ovum during ovulation.
