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The Thyroid Gland Anatomy of the thyroid gland The thyroid gland is found in the front of the neck. It sits below the voice box (larynx) and on top of the trachea (windpipe). It has a butterfly-like shape. The small, 2-inch gland consists of 2 lobes, 1 on each side of the

Anatomy of the Breasts Each breast has 15 to 20 sections, called lobes. They are arranged like the petals of a daisy. Each lobe has many smaller structures called lobules. These end in dozens of tiny bulbs that can make milk. The lobes, lobules, and bulbs are all linked by thin

The Heart Click on the links below to learn more about this topic. About the Heart and Blood Vessels Anatomy and Function of the Heart Valves Anatomy and Function of the Electrical System Heart Transplantation© 2000-2025 The StayWell Company, LLC. All rights reserved. This

Cystic Fibrosis in Children Click on the links below to learn more about this topic. Cystic Fibrosis Overview Genetics of Cystic Fibrosis Cystic Fibrosis and the Respiratory System Cystic Fibrosis and the Digestive System Cystic Fibrosis and the Reproductive System Symptoms of

Pregnancy Click on the links below to learn more about this topic. Pregnancy Overview Anatomy: Fetus in Utero The First Trimester (0 - 12 Weeks) The Second Trimester (12 - 24 Weeks) The Third Trimester (24 - 40 Weeks) The Pregnant Mother Hormones During Pregnancy Weight Gain

Allergens: Pollen What is pollen? Pollen is the tiny egg-shaped male cells of plants, including trees, grasses, and weeds. Pollen is microscopic in size. It is the most common cause of hay fever (seasonal allergic rhinitis). Which plants produce pollen that cause allergic

Multiple Pregnancy Multiple pregnancy is a pregnancy involving more than one fetus. Click on the links below to learn more about this topic. Overview of Multiple Pregnancy Symptoms and Diagnosis of Multiple Pregnancy Complications of Multiple Pregnancy Care and Management of

The Pregnant Mother Click on the links below to learn more about this topic. Hormones During Pregnancy Weight Gain During Pregnancy Nutrition During Pregnancy Exercise During Pregnancy Work and Pregnancy Sex During Pregnancy Sleeping During Pregnancy© 2000-2025 The StayWell

Sex During Pregnancy In most cases, sex during pregnancy is safe. In fact, with your healthcare provider's OK, you can have sex until delivery. But changing hormone levels and sone pregnancy symptoms, like nausea and tiredness, can reduce your sex drive. So can visible changes in

Thyroid Conditions Click on the links below to learn more about these topics. Hyperthyroidism Hypothyroidism Postpartum Thyroiditis© 2000-2025 The StayWell Company, LLC. All rights reserved. This information is not intended as a substitute for professional medical care. Always