Medical

Your throat is the tube inside your neck that leads to your stomach.

Tobacco is a plant used worldwide as a legal recreational drug. It is also used to make pesticides. Tobacco is most commonly taken by smoking it in cigarettes, cigars or in a pipe but it can also be chewed or snuffed.
Most tobacco is grown in China, India, Brazil and the United States.

Your toenails are the hard, flat things on the tops of your toes. They help protect your toes from damage. Toenails grow much more slowly than fingernails.

Tonsils are glands located right at the back of your mouth. They are part of your immune system. When you get sick, often your tonsils get sore and swollen.

Toothache is pain in a tooth or around a tooth, and can be so bad you can't sleep. Many people get toothaches when something is wrong with their teeth.

You touch things with your fingers but you can feel something touching you anywhere on your body. When you touch something you can tell if it is hard or soft, rough or smooth.

Tummy or belly is a slang word for the part of your body where your stomach is.

An udder is the part of the female cow or goat that milk comes from. Baby cows or goats drink from their mother's udder, but people also collect the milk using machines so they can sell it in shops.

An ultrasound is a medical scan that uses soundwaves to "see" what is happening inside you. Ultrasounds are most often used to look at unborn babies while they are developing.

Valerian is a hardy plant with pink or white flowers. The roots of the plant can be used for medicinal purposes, usually by making them into a tea. Valerian has a sedative effect and helps you to sleep.
You may also be interested in red valerian, an unrelated plant with a similar name.