1. For each space below, indicate whether each of the factors on the left affect

Question

1. For each space below, indicate whether each of the factors on the left affecting cardiac output causes arn increase, decrease, or no change in heart rate, stroke volume and cardiac output. In cases where you think you could argue two answers, pick one and provide justification! (7.5 pts). Stroke Volume Increase Cardiac Output Increase Heart Rate Increased sympathetic Increase stimulation Increased parasympathetic stimulation Increased venous return due to vasoconstriction Exercise Sudden catastrophic loss of blood Increase in blood calcium levels 2. Jennifer, a 20-year-old female is admitted to the emergency room after fainting during soccer practice in hot weather. She has a rapid pulse but very low blood pressure. Doctors immediately suspect dehydration. a) How can her blood pressure be low if her heart rate is high? Explain using a homeostasis loop starti with the initial disturbance to MAP homeostasis. (5 pts)

Explanation / Answer

1. A. Parasympathetic activation

Decreases heart rate

Decreases or increases stroke volume

Decreases cardiac output

B. Increased venous return due to vasoconstriction

It increases all the three i.e. heart rate ,stroke volume,cardiac output

C. Exercise

It also increases heart rate ,stroke volume and cardiac volume.

D. Sudden loss of blood

Heart rate increases

Stroke volume decreases

Cardiac output decreasez

E. Increase in blood calcium

Increases heart rate ,stroke volume and cardiac output

Related Questions

Navigate

• Browse (All)
• Browse 1
• Subjects

---

---

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.