Thyroid vs. Parathyroid
Main DifferenceThe main difference between the thyroid and parathyroid gland is that a thyroid gland is a butterfly-shaped vascular organ that is located in the neck on the other hand parathyroid glands are actually four small glands of the endocrine system also present in the neck behind the thyroid gland and regulate the calcium in our body.

Difference Between Thyroid and Parathyroid
Thyroid vs. Parathyroid
The thyroid gland is present below the laryngeal cartilage on the other side parathyroid gland is present behind the thyroid gland.
Thyroid vs. Parathyroid
In color, the thyroid is in brownish red, and parathyroid is in mustard yellow.
Thyroid vs. Parathyroid
The weight of thyroid gland is about 15-25 g whereas the weight of parathyroid is 30 milligrams.
Thyroid vs. Parathyroid
The thyroid gland controls body metabolism while parathyroid gland controls the level of calcium in blood and bone.
Thyroidadjective
(anatomy) Of, relating to, or being the thyroid cartilage.
Parathyroidadjective
(anatomy) Situated near the thyroid gland.
Thyroidadjective
(anatomy) Of, relating to, or being the thyroid gland.
Parathyroidadjective
(anatomy) Pertaining to the parathyroid glands or their extracts.
Thyroidadjective
Suggestive of a disordered thyroid gland.
a thyroid personalityParathyroidnoun
The parathyroid gland.
Thyroidnoun
(anatomy) thyroid cartilage.
Parathyroidnoun
A parathyroid hormone.
Thyroidnoun
(anatomy) thyroid gland.
Parathyroidnoun
any one of four endocrine glands situated above or within the thyroid gland
Thyroidnoun
(medicine) An extract prepared from the thyroid gland of animals and used in treating deficiency of thyroid hormones.
Thyroidnoun
located near the base of the neck
Thyroidadjective
of or relating to the thyroid gland;
thyroid deficiencythyroidal uptakeThyroidadjective
suggestive of a thyroid disorder;
thyroid personalityComparison Chart
Thyroid | Parathyroid |
The thyroid gland is a vascular organ located in the neck | Parathyroid glands are small endocrine glands that regulate the calcium in our body |
Location | |
Present in the neck just below the laryngeal cartilages | Present in the neck behind the thyroid |
Size | |
Each lobe of the thyroid is 4 to 6 cm in length and 1.3 to 1.8 cm in thickness | They are generally in the size of a grain of rice weighs approximately 30 milligrams and is 3-4 millimeters in diameter |
Colour | |
Brownish red in color | Mustard yellow in color |
Hormones Production | |
Thyroxine, Triiodothyronine, calcitonin | Parathyroid hormones |
Function | |
Body’s metabolism | Regulate calcium level in bones and blood |
Thyroid vs. Parathyroid
The thyroid gland also produces another hormone called calcitonin, and the parathyroid glands secrete parathyroid hormone. The thyroid gland is present in the neck just under the laryngeal cartilage while parathyroid is present in the neck behind the thyroid gland. The thyroid gland is brownish red in color while parathyroid gland is mustard yellow. Thyroid gland secrets thyroid hormone while parathyroid gland secretes parathyroid hormone. Weight of thyroid gland is approximately 15-25 g; on the other hand, the weight of parathyroid is about 30 milligrams and is 3-4 millimeters in diameter. The thyroid gland consists of two lobes whereas the parathyroid gland is four in number.
What is Thyroid?
The thyroid gland is a small butterfly-shaped vascular organ which is located in the neck. It is composed of two lobes, one lobe is on each side of the trachea, just below the voice box or larynx. These two lobes are connected by a small band of tissue which is known as the isthmus. Internally, the gland is made of follicles, which produce two hormones like triiodothyronine hormones and thyroxine. These hormones consist of iodine. About 5 percent is triiodothyronine, and 95 percent of the active thyroid hormone is thyroxine. Both of these need iodine for their synthesis. Thyroid gland secretion is regulated by a negative feedback mechanism which involves the amount of circulating hormone, adenohypophysis, and hypothalamus.
In the case of iodine deficiency, the thyroid is not able to make sufficient hormone. This stimulates the anterior pituitary to release the thyroid-stimulating hormone, which causes the thyroid gland to increase in size in a vain attempt to produce more hormones. But it cannot produce more hormones because it does not have the necessary raw material, iodine. This type of thyroid enlargement is called simple goiter or iodine deficiency goiter. Thyroid hormones affect three fundamental physiologic processes: cellular differentiation, growth, and metabolism. The thyroid gland also produces another hormone called calcitonin.
Functions
- Calcitonin produced by the thyroid participates in the control of calcium and phosphorus homeostasis and have significant effects on bone physiology.
- The thyroid gland controls much of our body’s metabolism.
What is Parathyroid?
The parathyroid gland is four in number, and they are the part of the endocrine system which regulates the level of calcium in our bodies. They are located in the neck just behind the thyroid gland where they are constantly monitoring the calcium level and also regulate the blood calcium level. Parathyroid glands are normally in the size of a grain of rice, but they can be as large as a pea size. Their color is mustard yellow. These glands also control the level of calcium in our bones, in our blood and throughout our body. They regulate the calcium by the production of parathyroid hormone. Calcium is an essential element in our bodies. Calcium also controls many organ systems of the body. Calcium is the only element in body which have its own regulatory system-the parathyroid gland. Parathyroid glands secrete parathyroid hormone or parathormone. Insufficient secretion of parathyroid hormone may lead to increased nerve excitability. The low level of calcium in the blood may trigger continuous and spontaneous nerve impulses, which then stimulate muscle contraction.
Functions
- Parathyroid controls of phosphorus homeostasis and have significant effects on bone physiology.
- Parathyroid glands also control the level of calcium in blood and bones.
ConclusionConclusion of this article is that both the thyroid and parathyroid are present in the neck which secretes the different hormones that maintain our body’s metabolism and level of calcium.