Hormones | Back to Top. The endocrine system is a collection of glands that secrete chemical messages we call hormones. These signals are passed through the blood to arrive at a target organ, which has cells possessing the appropriate receptor. Exocrine glands (not part of the endocrine system) secrete products that are passed outside the body. Sweat glands, salivary glands, and digestive glands are examples of exocrine glands. The roles of hormones in selecting target cells and delivering the hormonal message.
Passport validity and the least six month rule. The requirement that a passport is valid for travel for six months beyond the holderâs stay in the United States is waived for certain nationalities, including British Citizens. Please visit 9 FAM 403.9 for more information .
Some countries do, indeed, insist on travellers having a minimum of three or six months left on their passport. Countries that require UK passport holders to have six months of validity left on their passport from the date of entry into the country include Brazil, Ecuador, Turkey, Tunisia and Israel. To enter New Zealand as a tourist, you should have a passport valid for a minimum of one month from the date of exit, and you must have an onward ticket. For South Africa, your passport should be valid for a minimum of 30 days from the date of exit from South Africa.