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Cardiovascular System Exam Questions And Answers
1. Which term conceptualizes that the greater the myocardial fiber stretch, within physiologic limits, the more forceful the ventricular contraction, thereby increasing stroke volume?
- A. Frank-Starling’s Law
- B. Automaticity
- C. Contractility
- D. Excitability
Correct answer: A
Rationale: The correct answer is A, Frank-Starling’s Law. This law explains that within physiologic limits, the greater the stretch of myocardial fibers, the more forceful the ventricular contraction, leading to an increased stroke volume. Choice B, Automaticity, refers to the ability of cardiac cells to spontaneously generate electrical impulses. Choice C, Contractility, represents the intrinsic ability of the heart muscle to contract. Choice D, Excitability, refers to the ability of cardiac cells to respond to electrical stimuli.
2. Which type of facilities are capable of performing minor surgeries and simple laboratory examinations?
- A. Secondary level health care
- B. Tertiary level of care
- C. Intermediate level of care
- D. Primary health care
Correct answer: C
Rationale: Intermediate level of care facilities are equipped to perform minor surgeries and conduct basic laboratory tests. These facilities bridge the gap between primary health care centers and hospitals offering specialized tertiary care services.
3. Parkinson’s disease is associated with the loss of which of the following neurotransmitter?
- A. Serotonin
- B. Adrenaline
- C. Dopamine
- D. GABA
Correct answer: C: Dopamine
Rationale: Parkinson's disease is a neurodegenerative disorder characterized by the loss of dopamine-producing neurons in the brain. Dopamine is a neurotransmitter responsible for coordinating smooth muscle movements. The decrease in dopamine levels leads to the motor symptoms associated with Parkinson's disease, such as tremors, rigidity, and bradykinesia. Serotonin, adrenaline, and GABA are not primarily implicated in the pathophysiology of Parkinson's disease.
4. What role does genetic predisposition play in the development of mental disorders?
- A. Genetic predisposition guarantees the development of mental disorders.
- B. Genetic predisposition plays a significant role but is not the only factor in developing mental disorders.
- C. Genetic predisposition is irrelevant in mental health.
- D. Genetic predisposition can be completely overridden by environmental factors.
Correct answer: B
Rationale: Genetic predisposition plays a significant role in the development of mental disorders, interacting with environmental factors. While genetics can predispose individuals to certain mental disorders, it is not a guarantee that the disorders will develop. Environmental factors, such as lifestyle, upbringing, and traumatic experiences, also play a crucial role in the manifestation of mental health conditions. Choice C is incorrect as genetic predisposition does have relevance in mental health. Choice D is incorrect as genetic predisposition and environmental factors both contribute to the development of mental disorders, neither completely overriding the other.
5. The nurse on the medical/surgical unit cares for a client with a diagnosis of cerebrovascular accident (CVA). The nursing assessment of the client’s neurological status should include which of the following? (Select all that apply)
- A. Obtain the pulses in all four extremities
- B. Ask the client to grasp and squeeze two fingers on each of the nurse’s hands
- C. Determine the client’s orientation to person, place, and time
- D. B, C
Correct answer: D
Rationale: The correct answer is 'D' because assessing grasp strength (choice B) and orientation to person, place, and time (choice C) are crucial components of a neurological assessment following a cerebrovascular accident (CVA). Pulse assessment in all four extremities (choice A) is not directly related to a neurological assessment and is more pertinent to vascular status. Therefore, choices A and D are incorrect in this context.
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