Source of pictures: pixabay.com
A new semester started. The brand-new physiology class was provided for senior students. In this course, students could learn some basic knowledge of anatomy and physiology. Students could learn more mysteries about the human body. In addition to studying in the classroom, they also had the opportunity to visit the community health service center.
The first class was given on Wednesday afternoon. Students in class1, Grade4 came to the community health service center near the school. All of them gathered in the conference room. The general practitioner of the community was the teacher of the first class.
When everyone sat down, the doctor said, "Welcome to our community. I will introduce some medical knowledge to you in this class. As we all know, we have an organ, thyroid gland. Do you know anything about it?" At this moment, David, who sat in the first row, raised his hand. He stood up and replied: "I have heard of ‘Big Neck Illness' before." After hearing his answer, the doctor nodded and said, "In fact, The Big Neck Illness, which he just mentioned, is a goiter. This disease is caused by iodine deficiency, which will lead to abnormal thyroid secretion. If a goiter is secreting insufficient α- and β-adrenaline as well as iodine to support normal activity, it can be treated through iodine supplementation. But if something is wrong with thyroid synthesis, the amount of thyroid stimulating hormone in the blood will remain at a high level for a long time. This will induce compensatory hyperplasia. It looks like the symptom of 'swollen neck'."
"What I just said is a little complicated. Let’s talk about the thyroid gland," the doctor continued, "The thyroid gland is one of numerous glands in our endocrine system. The butterfly-shaped gland located in front of our neck. All the glands in the endocrine system secrete chemicals called 'hormones', which will blend into the bloodstream and circulate within our body. The hormones, like a remote controller, regulate functions of specific organs and organ systems like a remote controller. Hormones secreted by the thyroid gland have many roles to play, such as regulating the way cells use energy, and metabolic rate. In other words, they are able to affect the growth rate of hair and bones, weight, body temperature, together with functions of the heart and digestive system. When the thyroid hormone is insufficient to meet the human body's normal needs, the endocrine system will get sick. In hospital, you can find these patients have the same symptoms, for example, they have dry hair and brittle nails, their weight increase significantly, and they may suffer from constipation." After class, David said spontaneously, "So amazing, I want to study medicine when I grow up!"
Author: Lu An
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