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Nursing Elites

ATI TEAS 7

physics

1. What type of energy does a stretched rubber band possess?

Correct answer:

Rationale: When a rubber band is stretched, it stores potential energy due to its position or state.

2. A common indicator used to distinguish between acidic and basic solutions is:

Correct answer: B

Rationale: Phenolphthalein turns pink in basic solutions and remains colorless in acidic solutions

3. Define power in physics.

Correct answer: b

Rationale: Power is the rate at which work is done or energy is transferred or converted.

4. What is the part of the nervous system responsible for the “fight-or-flight” response?

Correct answer: C

Rationale: The correct answer is C: Sympathetic nervous system. The sympathetic nervous system is responsible for the "fight-or-flight" response, which is the body's automatic response to perceived threat or danger. When activated, this system increases heart rate, dilates airways, and redirects blood flow to muscles to prepare the body for action. The somatic nervous system (A) controls voluntary movements, the parasympathetic nervous system (B) is responsible for the "rest and digest" response, and the enteric nervous system (D) regulates the digestive system. Therefore, the sympathetic nervous system is the specific part of the nervous system involved in the fight-or-flight response.

5. Action potentials, the all-or-nothing electrical signals traveling along neurons, are generated by the movement of:

Correct answer: B

Rationale: The correct answer is B: Sodium and potassium ions. Action potentials are generated by the movement of sodium and potassium ions across the neuronal membrane. During depolarization, sodium ions rush into the cell, causing a change in electrical charge. This influx of positive ions triggers the opening of voltage-gated potassium channels, allowing potassium ions to exit the cell during repolarization. Glucose is a source of energy for cells but does not directly generate action potentials. Neurotransmitters are chemical messengers released at synapses, while myelin is a fatty substance that insulates axons, speeding up the conduction of action potentials but not directly generating them.

6. A table shows the blood pressure readings for different age groups. How do you determine the patient with the highest systolic pressure?

Correct answer: A

Rationale: The best way is to compare the average systolic pressure values for each age group to identify the highest.

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