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. voltage gated ion channels: These open in response to changes in membrane potential, not chemical binding.
B. ligand gated ion channels: Ligands (like neurotransmitters) bind to the channel, causing it to open or close.
C. G-protein complex linked receptor proteins: These are receptors that activate intracellular signaling cascades, not ion channels directly.
D. carrier proteins: Carrier proteins transport substances across membranes but do not form open channels.
Correct Answer is C
Explanation
A. Cardiovascular:
Transports blood, but does not directly sense/respond to environmental changes.
B. Lymphatic:
Supports immune function and fluid balance, but not primarily responsible for homeostasis.
C. Endocrine:
Regulates hormones and maintains long-term homeostasis such as temperature, fluid balance, and glucose levels.
D. Respiratory:
Involved in gas exchange, but homeostasis is a secondary role.
E. Urinary:
Eliminates waste and regulates volume, but is a response mechanism rather than a regulatory system.
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