6.2 Major Glands & Hormones

Explanation
The gland shown in the image is the thyroid gland. The thyroid gland is located in the neck and is responsible for producing hormones that regulate metabolism and growth. It plays a crucial role in controlling the body's energy levels and maintaining proper functioning of various organs.

Explanation
The pancreas is the organ that secretes insulin to help regulate blood sugar. Insulin is a hormone that helps control the amount of glucose in the bloodstream. When blood sugar levels rise, the pancreas releases insulin, which allows cells to take in glucose and use it for energy or store it for later use. This helps maintain stable blood sugar levels and prevents them from getting too high. Therefore, the pancreas plays a crucial role in regulating blood sugar and preventing conditions like diabetes.

Explanation
The thyroid gland is responsible for regulating metabolism in the body. When a person is overweight and has trouble regulating their metabolism, it suggests that there may be an issue with the thyroid gland. The thyroid gland produces hormones that control the rate at which the body uses energy. If the thyroid gland is not functioning properly, it can lead to weight gain and difficulty in losing weight.

Explanation
Letter C represents the adrenal gland.

Explanation
Estrogen and progesterone are the correct answer because they are the primary female sex hormones released by the ovaries. Estrogen is responsible for the development and maintenance of female reproductive organs and secondary sexual characteristics, while progesterone plays a crucial role in preparing the uterus for pregnancy and maintaining pregnancy. Testosterone and cortisol are male sex hormones and stress hormones respectively, melatonin is a hormone that regulates sleep-wake cycles, insulin is a hormone involved in regulating blood sugar levels, and thyroxine is a hormone produced by the thyroid gland to regulate metabolism.

Explanation
The pituitary gland is responsible for producing the growth hormone. This hormone plays a crucial role in promoting growth and development in the body. In the case of this couple, their short stature can be attributed to having less of the growth hormone in their bodies. The pituitary gland, located at the base of the brain, controls the production and release of various hormones, including the growth hormone.

Explanation
The hypothalamus is a crucial part of the brain that plays a vital role in maintaining homeostasis and regulating various bodily functions. It helps control the function of many other glands by releasing hormones that stimulate or inhibit the release of hormones from the pituitary gland. These hormones, in turn, regulate the activity of other endocrine glands throughout the body, such as the thyroid, adrenal glands, and reproductive glands. Therefore, the hypothalamus is essential for coordinating and controlling the hormonal balance and overall functioning of multiple glands in the body.

Explanation
Melatonin is the hormone responsible for helping control sleep patterns. It is produced by the pineal gland in the brain and is released in response to darkness, signaling the body to prepare for sleep. Melatonin levels naturally rise in the evening, promoting drowsiness and helping to regulate the sleep-wake cycle. Therefore, if someone is exhausted, it is likely that their melatonin levels are disrupted or low, affecting their sleep patterns.