22 Questions
Which gland is also known as the hypophysis?
Pituitary gland
Which hormones act directly on non-endocrine tissues?
Growth hormone (GH)
Which part of the pituitary gland has a thin fibrous capsule and contains chromophils and chromophobes?
Pars distalis
Which type of cells in the pars distalis secrete growth hormone ?
Somatotrophs
Which region of the pituitary gland surrounds the infundibulum of the neurohypophysis?
Pars tuberalis
Which part of the endocrine system is responsible for synthesis, storage, and secretion of hormones?
The major endocrine organs
What are the staining characteristics and functions of the subtypes of cells in the pars distalis?
Stains blue and secretes growth hormones
Which part of the pituitary gland is responsible for storing secretions?
Neurohypophysis
What is the main function of the cells in the diffuse endocrine system?
Provide paracrine signaling
What are the characteristics of cells in endocrine glands?
All of the above
Which of the following hormones is released in response to increased blood tonicity?
ADH
What is the function of ADH in the renal collecting ducts?
Increase water reabsorption
Which condition can occur due to head trauma affecting the posterior pituitary?
Diabetes Insipidus
What is the main function of oxytocin during childbirth?
Stimulate uterine smooth muscle contraction
Which cells in the mammary gland does oxytocin act on?
Myoepithelial cells
What is the neural connection between the hypothalamus and the pituitary gland called?
Hypothalamic-hypophyseal tract
Which arteries supply the pituitary gland?
Internal carotid arteries
Which of the following is true about the pars intermedia of the anterior pituitary gland?
It secretes melanocyte stimulating hormone (MSH)
What is the ultrastructure of the cells in the anterior pituitary gland?
All of the above
How are the activities of the cells in the anterior pituitary gland controlled?
All of the above
What are Herring bodies in the posterior pituitary gland?
Axonal dilatations
What triggers the release of peptides from Herring bodies in the posterior pituitary gland?
Nerve impulses along the axons
Test your knowledge on the anatomy and function of the pars intermedia in the anterior pituitary gland. Learn about the cell types and embryonic origins of this narrow zone, as well as its activity during fetal life.
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