NLN PAX science EXAM A+ GRADE ASSURED COMPLETE SOLUTIONS AND VERIFIED ANSWERS

EXAM

Exam Solution
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Kaplan nursing entrance exam science Cartes 2026 A+
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GRADE ASSURED COMPLETE SOLUTIONS AND VERIFIED vc vc vc vc vc




ANSWERS (5EC7A)
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QUESTION 1 vc




digestive system vc




ANSWER

breaks down food into absorbable units that enter the blood for distribution to body cells.
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QUESTION 2 vc




cardiovascular system vc




ANSWER

blood vessels transport blood which carries oxygen, carbon dioxide, nutrients, water, etc.
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QUESTION 3 vc




what are the 3 parts of homeostatic regulation?
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ANSWER

1. the receptor- receives info that something in the environment is changing. 2. the control center-
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receives and processes information from the receptor. 3. the effector-
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responds to the commands of the control center by either opposing or enhancing the stimulus.
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QUESTION 4 vc




what is negative feedback?
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ANSWER

a reaction in which the system responds in such a way as to reverse the direction of change
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,QUESTION 5 vc




examples of negative feedback:
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ANSWER

- thermoregulation -home heating system -blood glucose level
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QUESTION 6 vc




what is positive feedback?
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ANSWER

a response is to amplify the change in the variable. this has a destabilizing effect, so does not result in h
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omeostasis. positive feedback is less common.
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QUESTION 7 vc




examples of positive feedback:
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ANSWER

-blood clotting -child birth
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QUESTION 8 vc




pathways that can alter homeostasis:
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ANSWER

nutrition, toxins, psychological, physical digestion.
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QUESTION 9 vc




what is transportation?
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ANSWER

when substances are transported to be used in the body.
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QUESTION 10 vc




osmosis:
ANSWER

, one way motion (like a boat on a river). transportation of water. the exchange of fluids from the extrace
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llular fluid to the intracellular fluid.
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QUESTION 11 vc




passive transport: vc




ANSWER

transportation of chemicals (like a boat going down a river). one way fluid motion.
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QUESTION 12 vc




active transport: vc




ANSWER

transportation moving the opposite way of the flowvc vc vc vc vc vc vc




QUESTION 13 vc




what are the primary ions of electrolytes?
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ANSWER

-sodium -potassium -calcium -magnesium -chloride -hydrogen phosphate -hydrogen carbonate
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QUESTION 14 vc




how are muscles and neurons activated?
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ANSWER

by electrolyte activity between the extracellular fluid and intracellular fluid.
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QUESTION 15 vc




human sensory receptors: vc vc




ANSWER

-chemosensor -mechanoreceptor -nociceptor -photoreceptor -thermoreceptor
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QUESTION 16 vc




The nervous system:
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ANSWER