Thyroid hormones (T 4 and T 3) are produced by the follicular cells of the thyroid gland and are regulated by TSH made by the thyrotropes of the anterior pituitary gland. The effects of T 4 in vivo are mediated via T 3 (T 4 is converted to T 3 in target tissues). T 3 is 3- to 5- fold more active than T 4.
May is Jewish American Heritage Month The Library of Congress, National Archives and Records Administration, National Endowment for the Humanities, National Gallery of Art, National Park Service and United States Holocaust Memorial Museum join in paying tribute to the generations of Jewish Americans who have helped form the fabric of American history, culture and society.
Rosh Hashana, also spelled Rosh Hashanah, is commonly known as the Jewish New Year. The event begins on the first day of Tishrei (or Tishri), which is the seventh month in the Jewish calendar. Note: Jewish holidays begin at sundown the day before the date specified for the holiday.osh Hashana starts on the first day of Tishrei (or Tishri), which is the seventh month in the Jewish calendar, and may last for two days. It is sometimes called the Day of Remembrance or the Day of Blowing the Shofar. The shofar is blown at some stage during Rosh Hashana.