Podcast
Questions and Answers
What is the approximate diameter of the pituitary gland?
What is the approximate diameter of the pituitary gland?
- 1.3 cm (correct)
- 0.5 mm
- 5 cm
- 2.5 cm
What bone supports the pituitary gland?
What bone supports the pituitary gland?
- Frontal bone
- Occipital bone
- Sphenoid bone (correct)
- Parietal bone
What covers the pituitary gland?
What covers the pituitary gland?
- Arachnoid mater
- Meninges
- Pia mater
- Dura mater (correct)
What is the shape of the pituitary gland?
What is the shape of the pituitary gland?
What is the approximate size of the pituitary gland?
What is the approximate size of the pituitary gland?
What surrounds the pituitary gland?
What surrounds the pituitary gland?
What is the function of the cerebral arterial circle?
What is the function of the cerebral arterial circle?
What is the pituitary gland rich in?
What is the pituitary gland rich in?
What is the significance of the cerebral arterial circle surrounding the pituitary gland?
What is the significance of the cerebral arterial circle surrounding the pituitary gland?
What is characteristic of the pituitary gland?
What is characteristic of the pituitary gland?
What can be said about the adrenal glands?
What can be said about the adrenal glands?
Who is the author of this medical concept?
Who is the author of this medical concept?
How many lobes does the described structure have?
How many lobes does the described structure have?
What is the approximate length of each lobe?
What is the approximate length of each lobe?
Where are the lobes positioned?
Where are the lobes positioned?
What connects the lobes anteriorly?
What connects the lobes anteriorly?
What is the function of the isthmus?
What is the function of the isthmus?
Which cells synthesize the two principal thyroid hormones?
Which cells synthesize the two principal thyroid hormones?
Which neurons innervate the thyroid?
Which neurons innervate the thyroid?
From which spinal cord segment do the preganglionic neurons originate?
From which spinal cord segment do the preganglionic neurons originate?
Which ganglia give rise to the postganglionic neurons?
Which ganglia give rise to the postganglionic neurons?
What is the function of the innervation of the thyroid?
What is the function of the innervation of the thyroid?
Study Notes
Pituitary Gland
- The pituitary gland is a rounded, pea-shaped gland, approximately 1.3 cm (0.5 in) in diameter.
- It is covered by the dura mater and supported by the sella turcica of the sphenoid bone.
- The gland is highly vascular and surrounded by the cerebral arterial circle, providing a rich blood supply.
- The pituitary gland has two lobes, each about 5 cm long, positioned on either lateral side of the trachea and connected anteriorly by the isthmus.
- The follicular cells of the pituitary gland synthesize the two principal thyroid hormones.
Innervation of the Thyroid
- The thyroid gland is innervated by postganglionic neurons from the superior and middle cervical sympathetic ganglia.
- It is also innervated by preganglionic neurons from ganglia derived from the second through the seventh thoracic segment of the spinal cord.
Adrenal Glands
- The adrenal glands are highly vascular.
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Description
This quiz covers the anatomy and structure of the pituitary gland, including its size, shape, and location in the brain.
