Pituitary Gland Anatomy and Hormones Quiz
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Questions and Answers

What is the posterior pituitary composed of?

  • Hypophyseal fossa
  • Pars nervosa (correct)
  • Pars tuberalis
  • Optic chiasm

    • What is the main pathway for the release of anterior pituitary hormones into the general bloodstream?

  • Hypothalamo-hypophyseal tract (correct)
  • Pars distalis connection
  • Mammillary body secretion route
  • Optic chiasm pathway

    • Which part of the pituitary gland constitutes the posterior one-quarter?

  • Pars intermedia
  • Infundibular stalk (correct)
  • Pars distalis
  • Pars nervosa

    • What type of cells are found in the hypothalamus that secrete hormones?

    <p>Neurosecretory cells</p> Signup and view all the answers

    Where does the hypothalamo-hypophyseal tract connect to in the posterior pituitary?

    <p>Pars nervosa</p> Signup and view all the answers

    What is the mass composition of the neurohypophysis in the posterior pituitary?

    <p>Neuroglia and nerve fibers</p> Signup and view all the answers

    Which gland regulates body temperature, thirst control, and hunger control?

    <p>Hypothalamus</p> Signup and view all the answers

    Which gland is a precursor of all steroids?

    <p>Adrenal Glands</p> Signup and view all the answers

    Which endocrine gland lies inferior to the hypothalamus?

    <p>Pituitary Gland</p> Signup and view all the answers

    Which gland is associated with functions like sex drive and water balance?

    <p>Gonads</p> Signup and view all the answers

    Which gland forms the floor and walls of the third ventricle of the brain?

    <p>Hypothalamus</p> Signup and view all the answers

    What is the role of the pituitary gland and hypothalamus in the endocrine system?

    <p>They have a wider ranging influence than any other part of the endocrine system.</p> Signup and view all the answers

    Where is the pituitary gland located?

    <p>Inferior to the hypothalamus</p> Signup and view all the answers

    What are the two parts that compose the pituitary gland?

    <p>Adenohypophysis and neurohypophysis</p> Signup and view all the answers

    Which part of the pituitary gland is controlled by regulatory hormones secreted by the hypothalamus?

    <p>Anterior pituitary</p> Signup and view all the answers

    What does the adenohypophysis constitute in the pituitary gland?

    <p>The anterior three-quarters of the pituitary</p> Signup and view all the answers

    Where is the sella turcica located?

    <p>Superior to the sphenoid bone</p> Signup and view all the answers

    What is the role of the pars tuberalis in relation to the infundibular stalk?

    <p>It is a thin wrapping around the infundibular stalk</p> Signup and view all the answers

    How are the anterior pituitary and hypothalamus connected?

    <p>By the hypothalamo-hypophyseal portal system</p> Signup and view all the answers

    Which part of the pituitary gland constitutes the posterior one-quarter?

    <p>Posterior pituitary</p> Signup and view all the answers

    What is the major function of the hypothalamo-hypophyseal portal system?

    <p>To provide a pathway for hypothalamic hormones to reach the anterior pituitary</p> Signup and view all the answers

    Where is the Hypophyseal fossa located?

    <p>In the sella turcica of the sphenoid bone</p> Signup and view all the answers

    Which part of the pituitary gland has no direct nervous connection to the hypothalamus?

    <p>Pars distalis</p> Signup and view all the answers

    What is the primary effect of thyroid hormone?

    <p>Increase the body's metabolic rate</p> Signup and view all the answers

    Which gland is described as the largest endocrine gland in the human body?

    <p>Thyroid gland</p> Signup and view all the answers

    What is the histological composition of the thyroid gland mainly composed of?

    <p>Follicles filled with colloid and lined by simple cuboidal epithelium</p> Signup and view all the answers

    What are the two main hormones secreted by the thyroid gland?

    <p>T3 and T4</p> Signup and view all the answers

    What is the function of triiodothyronine (T3) and thyroxine (T4)?

    <p>Increase body's metabolic rate</p> Signup and view all the answers

    What triggers the secretion of thyroid hormone?

    <p>TSH from the pituitary gland</p> Signup and view all the answers

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