29 Questions
What is the posterior pituitary composed of?
Pars nervosa
What is the main pathway for the release of anterior pituitary hormones into the general bloodstream?
Hypothalamo-hypophyseal tract
Which part of the pituitary gland constitutes the posterior one-quarter?
Infundibular stalk
What type of cells are found in the hypothalamus that secrete hormones?
Neurosecretory cells
Where does the hypothalamo-hypophyseal tract connect to in the posterior pituitary?
Pars nervosa
What is the mass composition of the neurohypophysis in the posterior pituitary?
Neuroglia and nerve fibers
Which gland regulates body temperature, thirst control, and hunger control?
Hypothalamus
Which gland is a precursor of all steroids?
Adrenal Glands
Which endocrine gland lies inferior to the hypothalamus?
Pituitary Gland
Which gland is associated with functions like sex drive and water balance?
Gonads
Which gland forms the floor and walls of the third ventricle of the brain?
Hypothalamus
What is the role of the pituitary gland and hypothalamus in the endocrine system?
They have a wider ranging influence than any other part of the endocrine system.
Where is the pituitary gland located?
Inferior to the hypothalamus
What are the two parts that compose the pituitary gland?
Adenohypophysis and neurohypophysis
Which part of the pituitary gland is controlled by regulatory hormones secreted by the hypothalamus?
Anterior pituitary
What does the adenohypophysis constitute in the pituitary gland?
The anterior three-quarters of the pituitary
Where is the sella turcica located?
Superior to the sphenoid bone
What is the role of the pars tuberalis in relation to the infundibular stalk?
It is a thin wrapping around the infundibular stalk
How are the anterior pituitary and hypothalamus connected?
By the hypothalamo-hypophyseal portal system
Which part of the pituitary gland constitutes the posterior one-quarter?
Posterior pituitary
What is the major function of the hypothalamo-hypophyseal portal system?
To provide a pathway for hypothalamic hormones to reach the anterior pituitary
Where is the Hypophyseal fossa located?
In the sella turcica of the sphenoid bone
Which part of the pituitary gland has no direct nervous connection to the hypothalamus?
Pars distalis
What is the primary effect of thyroid hormone?
Increase the body's metabolic rate
Which gland is described as the largest endocrine gland in the human body?
Thyroid gland
What is the histological composition of the thyroid gland mainly composed of?
Follicles filled with colloid and lined by simple cuboidal epithelium
What are the two main hormones secreted by the thyroid gland?
T3 and T4
What is the function of triiodothyronine (T3) and thyroxine (T4)?
Increase body's metabolic rate
What triggers the secretion of thyroid hormone?
TSH from the pituitary gland
Test your knowledge on the anatomy and hormones of the pituitary gland, including the posterior pituitary and the pathway for the release of anterior pituitary hormones. Identify structures like the pars nervosa, infundibulum stalk, and more.
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