What You Need: Play a YouTube video > Click the Download button > hit the Downloaded tab and then Convert > Choose Apple > Tick Export to iTunes. # 3. Enable Captions on a Video. Tap the Menu icon > Select the CC option (Only for the videos that have closed captioning available).
The endometrium is functionally subdivided into two layers. 1  The stratum functionalis is a thick superficial layer that is sloughed off during menstruation and grows anew during each cycle.  The stratum basalis consists of permanent stromal tissue and deep ends of the uterine glands.
When menstruation begins, the functional surface layer of the endometrium breaks down and peels off. This is what causes bleeding during a period. Coagulation factors that would normally cause the blood to clot are instead broken down by an enzyme which is released as the endometrium breaks down.hen menstruation begins, the functional surface layer of the endometrium breaks down and peels off. This is what causes bleeding during a period. Coagulation factors that would normally cause the blood to clot are instead broken down by an enzyme which is released as the endometrium breaks down.