What happens to the stratum during menstruation?
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 layer sheds during menstruation?
The uterus has 3 layers: Endometrium. This is the inner lining. It is shed during your period.
What is the stratum Functionale?
[ fŭngk′shə-nā′lē ] n. The endometrium except for the basal layer.
Where is the stratum basalis basal layer of the uterus?
Basal Layer (or stratum basalis) – lower third of the mucosa that is retained during menstruation and regenerates the functional layer.
Is the stratum Functionalis shed during menstruation?
At low power, one may appreciate that during the menstrual phase, the stratum functionalis portion of the endometrium is shed while the stratum basale remains in place and will give rise to a new stratum functionalis and surface epithelium during the ensuing proliferative phase.
What is menstruation triggered by?
The menstrual cycle is regulated by hormones. Luteinizing hormone and follicle-stimulating hormone, which are produced by the pituitary gland, promote ovulation and stimulate the ovaries to produce estrogen and progesterone.
What are the 3 layers of uterus?
The thick wall of the uterus has 3 layers:
- The endometrium is the inner layer that lines the uterus. It is made up of glandular cells that make secretions.
- The myometrium is the middle and thickest layer of the uterus wall. It is made up mostly of smooth muscle.
- The perimetrium is the outer serous layer of the uterus.
What is stratum corneum?
The stratum corneum is the outermost layer of the epidermis and marks the final stage of keratinocyte maturation and development. Keratinocytes at the basal layer of the epidermis are proliferative, and as the cells mature up the epidermis, they slowly lose proliferative potential and undergo programmed destruction.
What are the 3 parts and the 3 layers of the uterus What layer is functional during menstruation and implantation?
The uterus is a pear-shaped, muscular, hollow organ with a triple-layered wall: an outer tunica serosa, the perimetrium, a thick tunica muscularis, the myometrium, and an inner tunica mucosa, the endometrium. The endometrium is the layer in which the implantation takes place.
What hormone is highest during period?
During most of this phase, the estrogen level is high. Progesterone and estrogen cause the lining of the uterus to thicken more, to prepare for possible fertilization.
What is period blood called?
Menstruation is also known by the terms menses, menstrual period, cycle or period. The menstrual blood—which is partly blood and partly tissue from the inside of the uterus—flows from the uterus through the cervix and out of the body through the vagina.
What part of breast produces milk?
Milk production occurs within the alveoli, which are grape-like clusters of cells within the breast. Once the milk is made, it is squeezed out through the alveoli into the milk ducts, which resemble highways. The ducts carry the milk through the breast.
What happens to the stratum during the menstrual cycle?
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 happens to the myometrium during the menstrual cycle?
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. The myometrium allows for the expansion and contraction of the uterine cavity and is responsive to the hormone oxytocin.
How is the endometrium divided during the menstrual cycle?
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 the functional layer of the endometrium?
stratum functionale (functional layer): describes the superficial two-thirds that proliferates, secretes and then sheds during the menstrual cycle (in the absence of pregnancy) in response to hormonal factors proliferation of the functional layer of the endometrium is predominantly stimulated by estrogen
