Endocrine System

    Endocrine System
    Why are the receptors for amino acid-based hormones on the outside surface of the cell membrane?
    Amino acid-based hormones are not lipid soluble.
    Endocrine System
    From which organ is aldosterone released?
    Aldosterone is a “mineralocorticoid” hormone which gives a clue that it comes from the cortex of the adrenal glands.
    Endocrine System
    Which of the following glands have both exocrine and endocrine functions?
    The pancreas produces digestive enzymes and secretes them via a duct into the duodenum – the exocrine function. It also produces insulin and glucagon for release into the circulation – its endocrine role. The other three choices are solely endocrine organs.
    Endocrine System
    Which one of the following is NOT part of the endocrine system?
    The acini cells produce digestive enzymes.
    Endocrine System
    What does insulin do?
    Insulin stimulates the uptake of glucose into cells from the blood.
    Endocrine System
    Which hormone(s) increases the reabsorption of Ca++ from the filtrate in the kidney tubule?
    PTH causes increased calcium absorption and hence increases blood calcium level.
    Endocrine System
    Which of the following organ(s) are NOT endocrine organs?
    Renal gland is another name for the kidney.
    Endocrine System
    Which of the following secretes growth hormone?
    The anterior lobe produces and releases GH.
    Endocrine System
    What effect does insulin have?
    Glucose stimulates enhanced membrane transport of glucose into body cells and inhibits glycogenolysis and gluconeogenesis. This lowers blood glucose level.
    Endocrine System
    Which hormones does the pancreas produce?
    The pancreatic islets produce these hormones which manage the concentration of glucose in the blood.