Exophthalmic goiter
Lesson Flashcards: The Thyroid and Parathyroid Glands Biology
A specific goiter that can be caused by excessive thyroid hormones (thyroxine and triiodothyronine) and is usually accompanied by the bulging of the eyes
Hypoparathyroidism
A condition in which the parathyroid glands produce insufficient parathyroid hormone
Congenital hypothyroidism
A type of hypothyroidism that is present from birth and can cause problems with physical growth and development
Endocrine gland
A type of gland consisting of a group of specialized cells that secrete hormones directly into the blood
Parathyroid glands
Four pea-sized glands found on the posterior surface of the thyroid gland that produce parathyroid hormone
Thyroxine
A hormone secreted by the thyroid gland that affects functions like metabolism, growth, and development in the body
Hypothyroidism
A condition in which the thyroid gland produces insufficient thyroid hormones
Metabolism
All chemical reactions that occur within living organisms to maintain life
Graves’ ophthalmopathy
An autoimmune disease of the eye that could be associated with Graves’ disease
Myxedema
The condition brought about by severe hypothyroidism in adults
Pituitary gland
An endocrine gland connected to the brain that regulates many important body functions and controls other endocrine glands
Thyroid-stimulating hormone (TSH)
A hormone released by the anterior pituitary gland that triggers the production of thyroid hormones in the thyroid gland
Triiodothyronine
A hormone that is produced by the conversion of thyroxine into a more active form
Bone resorption
The process of the breakdown of bone tissue to release calcium into the bloodstream
Parafollicular cells
Cells beside the follicular cells that release calcitonin
Calcitonin
A hormone produced by the thyroid gland that is involved in calcium homeostasis
Autoimmune disease
A disease in which the body’s immune system mistakenly attacks its own tissue
Cellular respiration
A process in living organisms through which carbon-containing compounds (e.g., glucose) are broken down to release energy in the form of ATP
Parathyroid hormone
The hormone produced by the parathyroid glands that is involved in calcium homeostasis
Hormones
Chemical messengers usually transported in the blood or another medium throughout an organism’s body to regulate the activity of cell targets or tissues
Simple goiter
The enlargement of the thyroid gland that can be caused by iodine deficiency
Hyperparathyroidism
A condition in which the parathyroid glands produce excess parathyroid hormone
Hyperthyroidism
A condition in which the thyroid gland produces excess thyroid hormones (thyroxine and triiodothyronine)
Thyroid follicles
Structural and functional spherical units that make up the lobules of a thyroid gland and secrete a thyroid hormone circulating in the blood, mainly in the form of thyroxine and small quantities of triiodothyronine
Glands
Organs in the body that secrete substances that perform different roles in the body
Thyroid gland
A butterfly-shaped endocrine gland located at the base of the front of the neck that secretes thyroid hormones that control functions like metabolism, growth, and development
Basal metabolic rate
The rate at which the body uses energy while at rest to perform crucial body functions like respiration and circulation
Graves’ disease
An autoimmune disease in which the immune system attacks the thyroid, making it produce more thyroid hormones than required