Embryological Development of Pituitary Gland Quiz

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What is the size of the Pituitary Gland?

20 mm in diameter
12 mm in diameter (correct)
15 mm in diameter
6 mm in diameter

Which structure connects the Pituitary Gland to the hypothalamus?

Optic Chiasm
Sphenoid Air Sinus
Pituitary Stalk (correct)
Thyroid Gland

Where are the Parathyroid Glands located?

Under the tongue
Attached to the liver
Adjacent to the thyroid gland (correct)
Behind the eyes

What is the weight range of the Pituitary Gland?

0.5 - 1 gram (A) Signup and view all the answers

Which sinuses are located on both sides of the Parathyroid Glands?

Cavernous sinuses (A) Signup and view all the answers

What is the main arterial supply to the parathyroid glands?

Inferior thyroid artery (D) Signup and view all the answers

Which of the following veins drain the parathyroid glands?

Thyroid, tracheal and esophageal veins (B) Signup and view all the answers

What is the primary nerve supply to the parathyroid glands?

Sympathetic from superior and middle cervical ganglia (D) Signup and view all the answers

Which of the following statements about the parathyroid glands is NOT true?

Their nerve supply is from the vagus nerve (C) Signup and view all the answers

What type of nerve supply do the parathyroid glands receive?

Sympathetic (C) Signup and view all the answers

What is the origin of the anterior lobe (adenohypophysis) of the pituitary gland?

It develops from an ectodermal pouch called Rathke's pouch derived from the roof of the primitive mouth of the embryo. (C) Signup and view all the answers

What is the origin of the posterior lobe (neurohypophysis) of the pituitary gland?

It develops from an evagination of the diencephalon containing an extension from the third ventricle. (A) Signup and view all the answers

What is the name of the ectodermal pouch from which the anterior lobe of the pituitary gland develops?

Rathke's pouch (B) Signup and view all the answers

Which structure is involved in the development of the posterior lobe of the pituitary gland?

Diencephalon (A) Signup and view all the answers

What is the name of the ventricle of the brain that is involved in the development of the posterior lobe of the pituitary gland?

Third ventricle (B) Signup and view all the answers

What is the anatomical structure that connects the two lateral lobes of the thyroid gland?

Thyroid isthmus (B) Signup and view all the answers

Where does the lower border of the thyroid gland correspond to?

6th tracheal ring (A) Signup and view all the answers

Which structure contains the common carotid artery, internal jugular vein, and vagus nerve related to the parathyroid glands?

Carotid sheath (A) Signup and view all the answers

What forms the medial relations of the thyroid gland?

Recurrent laryngeal nerve (C) Signup and view all the answers

Which relationship best describes the position of the parathyroid glands with respect to the trachea?

Posterior to trachea (B) Signup and view all the answers

What structure is responsible for draining blood away from the thyroid gland?

Pre-tracheal fascia (A) Signup and view all the answers

What is the anterior relation of the thyroid gland?

Pretracheal fascia (C) Signup and view all the answers

What tracheal rings do the thyroid gland relate to posteriorly?

Tracheal rings 3, 4, 5 (B) Signup and view all the answers

What is the superior relation of the thyroid gland?

Anastomosis between superior thyroid arteries (D) Signup and view all the answers

Which of the following is NOT an inferior relation of the thyroid gland?

Pyramidal lobe (C) Signup and view all the answers

What supplies blood to the thyroid gland?

Superior and inferior thyroid arteries (C) Signup and view all the answers