Which of the following is a key difference between the endocrine system and the nervous system in terms of signaling?
The endocrine system uses hormones for signaling, while the nervous system uses neurotransmitters.
The endocrine system uses electrical signals, while the nervous system uses chemical signals.
The nervous system generates responses that take longer to occur compared to the endocrine system.
Both systems use hormones for signaling but at different speeds.
The Correct Answer is A
A. The endocrine system uses hormones for signaling, while the nervous system uses neurotransmitters.: The endocrine system releases chemical messengers (hormones) into the bloodstream that act on distant targets, while the nervous system transmits signals using neurons that release neurotransmitters at synapses for rapid, localized communication.
B. The endocrine system uses electrical signals, while the nervous system uses chemical signals.: The endocrine system relies on chemical hormones rather than electrical impulses; electrical signals are a primary feature of neuronal (nervous) communication.
C. The nervous system generates responses that take longer to occur compared to the endocrine system.: Nervous-system responses are typically rapid and short-lived because of fast electrical conduction and synaptic transmission, whereas endocrine responses are usually slower to start but longer-lasting.
D. Both systems use hormones for signaling but at different speeds.: While the endocrine system primarily uses hormones, the nervous system mainly uses electrical impulses and neurotransmitters; hormones can modulate neural function but the two systems do not both primarily use hormones.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is C
Explanation
A. Leukocytes:Leukocytes (white blood cells) are involved in immune defense, not oxygen transport.
B. Platelets:Platelets mediate clotting and do not transport oxygen.
C. Hemoglobin:Hemoglobin, the oxygen-carrying protein within red blood cells, binds oxygen in the lungs and transports it to tissues.
D. Plasma:Plasma is the liquid portion of blood that carries nutrients and dissolved gases but oxygen is primarily carried bound to hemoglobin in red blood cells.
Correct Answer is B
Explanation
A. Facilitating gas exchange:Gas exchange occurs in the respiratory system (alveoli), not the lymphatic system.
B. Returning excess fluid to the bloodstream:The lymphatic system collects interstitial fluid (lymph) and returns it to the venous circulation, preventing edema.
C. Digesting proteins:Protein digestion is performed by the gastrointestinal tract and its enzymes, not the lymphatic system.
D. Producing red blood cells:Hematopoiesis (red blood cell production) occurs in bone marrow, not the lymphatic system.
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