What are the two lobes of the thyroid gland connected by?
The thyroid gland lies in the front of your neck in a position just below your Adam’s apple. It is made up of two lobes – the right lobe and the left lobe, each about the size of a plum cut in half – and these two lobes are joined by a small bridge of thyroid tissue called the isthmus.
What connects the thyroid?
Single cartilages are the shield-shaped thyroid in front, whose prominence forms the Adam’s apple in the male; the cricoid cartilage below, which resembles a signet ring and connects the thyroid to the trachea or windpipe; and the leaf-shaped epiglottis, or laryngeal lid, on top.
What is attached to the back of the thyroid gland?
Parathyroid disorders develop when parathyroid glands (normally four glands located near, or attached to, the back surface of the thyroid) release inappropriate levels of PTH hormone which controls calcium levels in the body.
What gland is attached to the thyroid gland?
The parathyroid glands lie just behind the thyroid glands in the neck. The parathyroid glands (light pink) produce parathyroid hormone, which increases levels of calcium in the blood. The parathyroid glands are small pea-sized glands located in the neck just behind the butterfly-shaped thyroid gland.
What is the pyramidal lobe of thyroid gland?
The pyramidal lobe of thyroid (also known as Lalouette pyramid 5) is a normal anatomic variant representing a superior sliver of thyroid tissue arising from the thyroid isthmus. It is seen as a third thyroid lobe and is present in 10-30% of the population. It represents a persistent remnant of the thyroglossal duct.
What are the two types of thyroid?
The two main types of thyroid disease are hypothyroidism and hyperthyroidism. Both conditions can be caused by other diseases that impact the way the thyroid gland works.
What gland releases TSH?
The hypothalamus releases thyrotropin-releasing hormone (TRH), which stimulates the pituitary gland to release thyroid-stimulating hormone (TSH).
What are 2 disorders of the thyroid gland?
Where is the pyramidal lobe of thyroid gland?
Where are the lobes of the thyroid located?
Lobes of The Thyroid Gland. A fibrous or fibromuscular band, the levator of the thyroid gland, sometimes descends from the body of the hyoid to the isthmus or pyramidal lobe. The thyroid gland is surrounded by a thin fibrous capsule, which sends septa deeply into the gland.
How is the thyroid connected to the thyriod gland?
The lateral surface is covered by the sternothyroid muscle, which is attached to the oblique line of the thyroid cartilage preventing the upper pole of the gland from extending onto the thyrohyoid muscle. Anteriorly: Pretracheal fascia, sternohyoid muscle and the superior belly of omohyoid muscle.
Where is the levator of the thyroid located?
A fibrous or fibromuscular band, the levator of the thyroid gland, sometimes descends from the body of the hyoid to the isthmus or pyramidal lobe. The thyroid gland is surrounded by a thin fibrous capsule, which sends septa deeply into the gland.
Where is the thyroid located in the neck?
The thyroid gland, or simply the thyroid, is an endocrine gland in the neck, consisting of two lobes connected by an isthmus. It is found at the front of the neck, below the Adam’s apple.
How many lobes make up the thyroid gland?
The thyroid gland lies in the front of your neck in a position just below your Adam’s apple. It is made up of two lobes – the right lobe and the left lobe, each about the size of a plum cut in half – and these two lobes are joined by a small bridge of thyroid tissue called the isthmus.
What is the right lobe of the thyroid?
The right lobe of the thyroid contains the thyroid follicles and the parafollicular cells, which produce the thyroid hormones, triiodothyronine , thyroxine, and calcitonin. The right lobe of the thyroid is connected to the left lobe of the thyroid and the pyramidal lobe by the thyroid isthmus,…
What is thyroxine gland?
Thyroxine is a hormone the thyroid gland secretes into the bloodstream. Once in the bloodstream, thyroxine travels to the organs, like the liver and kidneys, where it is converted to its active form of triiodothyronine. Thyroxine plays a crucial role in heart and digestive function, metabolism, brain development, bone health, and muscle control.