In the cold, thermoreceptors in your skin detect the temperature and inform your brain, which tells the skeletal muscles to contract, causing shivering. What is the effector?
brain
shivering
thermoreceptors
skeletal muscles
The Correct Answer is D
A. Brain: The brain is the control center, not the effector.
B. Shivering: Shivering is a response, not an anatomical structure. The effector must be a structure that performs an action.
C. Thermoreceptors: These are the sensory receptors (detectors), not effectors.
D. Skeletal muscles: Skeletal muscles are the effectors that contract to produce shivering, generating heat in response to cold.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is B
Explanation
A. lipids: Lipids are not made of peptide bonds; they consist of fatty acids and glycerol.
B. enzymes: Enzymes are proteins, made of amino acids linked by peptide bonds. Denaturation alters the protein's structure and function.
C. nucleic acids: Nucleic acids (DNA/RNA) are composed of nucleotides, not peptide bonds.
D. eicosanoids: Eicosanoids are lipid-derived signaling molecules, not proteins.
Correct Answer is D
Explanation
A. it is a decomposition dehydration reaction: Dehydration removes water, but this reaction adds water (H₂O).
B. it is an anabolic reaction: Anabolic reactions build larger molecules from smaller ones. This reaction is breaking a molecule apart.
C. it is an exchange reaction: Exchange reactions involve swapping parts between molecules—not just splitting.
D. it is a decomposition hydrolysis reaction: This is a decomposition (breaking down) reaction using hydrolysis (water added to break bonds).
E. it is a synthesis dehydration reaction: That would involve joining molecules together and removing water, which is not the case here.
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