29 Questions
What is the role of parafollicular 'C' cells in the thyroid gland?
Secrete calcitonin
What is the function of chief cells in the parathyroid gland?
Secrete parathormone
Which gland is regulated by TSH secretion?
Thyroid gland
What is the effect of active thyroxine secreted by the thyroid follicular cells?
Increases basal metabolic rate
What characterizes the appearance of parafollicular 'C' cells in the thyroid gland?
Large pale round cells
Where are the chief cells located in relation to the thyroid gland?
Internal embedded within the thyroid
What is the role of the parenchymal cells in the pars tuberalis?
Regulate the seasonal reproductive cycle
Which part of the pituitary gland stores hormones made in the hypothalamus for direct release into the bloodstream?
Pars nervosa
Which type of nerve fibers are found in the Neurohypophysis pars nervosa?
Unmyelinated nerve fibers
What is the primary role of pinealocytes in the Pineal Gland?
Regulate bodily rhythms
Which hormone is responsible for regulating circadian rhythms based on light detection?
Melatonin
What type of receptor is typically associated with basophil cells in the endocrine system?
G protein coupled receptor
Which hormone is produced by alpha cells in the pancreas?
Glucagon
What is the primary function of atrial natriuretic peptide (ANP)?
Promotes sodium and water excretion, lowering blood pressure
Which of the following is NOT a hormone involved in the digestive system?
Renin
What is the primary function of erythropoietin?
Controls red blood cell production
Which of the following cells are responsible for producing hormones in the digestive system?
Enteroendocrine cells
What is the outermost layer of the adrenal cortex?
Zona glomerulosa
Which cells secrete epinephrine and norepinephrine in the adrenal medulla?
Chromaffin cells
What is the function of the hormones secreted by the adrenal medulla?
Stimulate the sympathetic nervous system
Which cells in the pancreatic islets secrete insulin?
Beta cells
What is the function of somatostatin secreted by the delta cells in the pancreatic islets?
Prevent the production of other hormones and secretions
Which layer of the adrenal cortex contains the blastemic stem cells that generate replacement parenchyma?
Zona intermedia
What is the main hormone produced by Thyrotrophs?
Thyroid-stimulating hormone (TSH)
Which hormone is regulated by adrenocorticotropic hormone (ACTH)?
Cortisol
What distinguishes Chromophobes from Acidophils and Basophils?
Postsecretory nature
Which cell is most abundant in the Pars Intermedia?
Melanotrophs
What term is used to describe cells believed to represent an undifferentiated stem cell of the adenohypophyseal parenchyma?
Stellate-shaped chromophobes
What is the function of follicle-stimulating hormone (FSH) and luteinizing hormone (LH) in Gonadotrophs?
Coexpressed by Gonadotrophs
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