Which of the following will raise blood pressure?
Vasodilation
Increased cardiac output
Decreased heart rate
Parasympathetic stimulation
The Correct Answer is B
A. Vasodilation refers to the widening of blood vessels, which typically lowers blood pressure by decreasing the resistance within the vessels.
B. Increased cardiac output means the heart pumps more blood per minute, which raises blood pressure by increasing the volume of blood circulating through the arteries. This is the correct answer.
C. Decreased heart rate would typically lower blood pressure, as the heart is pumping less frequently, reducing the force exerted on the blood vessels.
D. Parasympathetic stimulation generally lowers blood pressure as it promotes relaxation and reduces the heart rate, which in turn reduces cardiac output.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is B
Explanation
A. Dehydroepiandrosterone (DHEA) and estradiol are hormones related to sex and stress but are not primarily involved in the fight-or-flight response.
B. Epinephrine (adrenaline) and norepinephrine are the key hormones released by the adrenal medulla during the fight-or-flight response. These hormones increase heart rate, blood pressure, and energy supply to prepare the body for rapid action in stressful situations. This is the correct answer.
C. Ghrelin and kisspeptin are involved in hunger and reproductive functions, not the acute stress response.
D. Insulin and glucagon are involved in regulating blood sugar, but they are not the primary hormones released during the fight-or-flight response.
Correct Answer is C
Explanation
A. Luteinizing hormone (LH) is involved in the regulation of the menstrual cycle and ovulation, but it is not responsible for uterine contractions or milk production.
B. Lactogen (also known as human placental lactogen) is produced during pregnancy and helps prepare the breasts for milk production, but it does not trigger uterine contractions.
C. Oxytocin plays a key role in both uterine contractions during labor and milk ejection during breastfeeding. It is sometimes referred to as the "love hormone" because it is also involved in bonding and emotional connections.
D. Prolactin is responsible for stimulating milk production in the mammary glands, but it does not cause uterine contractions. Oxytocin is the hormone responsible for that function.
Whether you are a student looking to ace your exams or a practicing nurse seeking to enhance your expertise , our nursing education contents will empower you with the confidence and competence to make a difference in the lives of patients and become a respected leader in the healthcare field.
Visit Naxlex, invest in your future and unlock endless possibilities with our unparalleled nursing education contents today
Report Wrong Answer on the Current Question
Do you disagree with the answer? If yes, what is your expected answer? Explain.
Kindly be descriptive with the issue you are facing.