The ability of a specific tissue or organ to respond to the presence of a hormone is dependent on.
the location of the tissue or organ with respect to the circulatory path.
the membrane potential of the cells of the target organ.
the presence of the appropriate receptors on the cells of the target tissue or organ.
Nothing, all hormones of the human body are able to stimulate any and all cell types because hormones are powerful and nonspecific.
The Correct Answer is C
a) The location of the tissue or organ with respect to the circulatory path: Hormones are carried through the entire bloodstream, so all tissues are exposed. Proximity doesn’t determine responsiveness.
b) The membrane potential of the cells of the target organ: Membrane potential may affect nerve impulse conduction, but not hormone specificity.
c) the presence of the appropriate receptors on the cells of the target tissue or organ: Hormones act only on target cells that express specific receptors for them. No receptor = no response.
d) All hormones stimulate any and all cell types because hormones are powerful and nonspecific: Hormones are highly specific and only act on cells with matching receptors.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is B
Explanation
a) Mom is Rh-positive and the fetus is Rh-positive: No issue arises because the mother's immune system recognizes the Rh antigen as self.
b) Mom is Rh-negative and fetus is Rh-positive: If the mother is Rh-negative and the first fetus is Rh-positive, the mother's immune system may become sensitized during delivery. In subsequent pregnancies with Rh-positive fetuses, maternal anti-Rh antibodies (IgG) can cross the placenta and attack fetal RBCs, causing hemolytic disease of the newborn (erythroblastosis fetalis).
c) Mom is Rh-negative and fetus is Rh-negative: No immune response is triggered; both are Rh-negative.
d) Mom is Rh-positive and fetus is Rh-negative: No risk; maternal antibodies are not formed against Rh-negative cells.
Correct Answer is D
Explanation
a) It is transported to the liver and becomes part of the bile: This applies to bilirubin, a byproduct of heme, not iron.
b) It is converted into stercobilin and gives color to feces: Stercobilin is derived from bilirubin, not iron.
c) It is used to synthesize proteins: While iron is important in protein function, its primary fate is recycling for hemoglobin.
d) It attaches to transferrin and is transported to bone marrow for use in hemoglobin synthesis. Iron is bound to transferrin in the blood and transported to the bone marrow for new red blood cell (hemoglobin) synthesis.
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