How is iron stored in the liver as consequence of the recycling of the hemoglobin components?
Ferritin
Transferrin
Hemosiderosis
Ferrin
The Correct Answer is A
a) Ferritin: Ferritin is a protein complex that stores iron in the liver, releasing it when needed.
b) Transferrin: Transferrin is the transport protein that carries iron in the blood, not a storage form.
c) Hemosiderosis: This is a pathological condition caused by excess iron deposition in tissues, not a normal storage mechanism.
d) Ferrin: “Ferrin” is not a physiologically recognized iron storage molecule.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is D
Explanation
a) Prolactin (PRL): Secreted by anterior pituitary to stimulate milk production.
b) Adrenocorticotropic hormone (ACTH): Stimulates adrenal cortex; anterior pituitary product.
c) Follicle-stimulating hormone (FSH): Produced by the anterior pituitary; regulates gonads.
d) Antidiuretic hormone (ADH): ADH is produced by the hypothalamus and stored/released by the posterior pituitary.
e) Luteinizing hormone (LH): Another anterior pituitary hormone involved in reproduction.
Correct Answer is B
Explanation
a) Increasing blood glucose levels :Melatonin is not directly regulated by glucose.
b) The light and dark cycles: Melatonin secretion by the pineal gland is regulated by the suprachiasmatic nucleus in response to light exposure. Darkness stimulates its release, promoting sleep.
c) The dysregulation of the immune system :While melatonin has immune-modulating roles, this is not its main regulatory mechanism.
d) Increasing pigmentation of the skin :Melanin and melatonin are different substances.
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