This topic contains a solution. Click here to go to the answer
« previous next »

Author Question: The heart's ability to vary stroke volume based solely on changes in end-diastolic volume is based ... (Read 73 times)

Collmarie

  • Hero Member
  • *****
  • Posts: 569
on: Jul 16, 2018
The heart's ability to vary stroke volume based solely on changes in end-diastolic volume is based on what mechanism?
 
  a. Automaticity
  b. Autoregulation
  c. Bohr equation
  d. Frank-Starling's law

Question 2

What is a normal cardiac ejection fraction?
 
  a. 24
  b. 44
  c. 64
  d. 84


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

Ddddd

  • Sr. Member
  • ****
  • Posts: 334
Reply #1 on: Jul 16, 2018
Answer to Question 1

ANS: D
The heart's ability to change stroke volume solely according to the EDV is an intrinsic regulatory mechanism based on the Frank-Starling's law.

Answer to Question 2

ANS: C
Thus, on each contraction, the normal heart ejects approximately two-thirds of its stored volume. Decreases in ejection fraction are normally associated with a weakened myocardium and de-creased contractility.


Collmarie

  • Member
  • Posts: 569
Reply 2 on: Jul 16, 2018
Great answer, keep it coming :)

Laurenleakan

  • Member
  • Posts: 309
Reply 3 on: Yesterday
Thanks for the timely response, appreciate it

« previous next »
 

Did you know?

According to the CDC, approximately 31.7% of the U.S. population has high low-density lipoprotein (LDL) or "bad cholesterol" levels.

Did you know?

Medication errors are more common among seriously ill patients than with those with minor conditions.

Did you know?

Bisphosphonates were first developed in the nineteenth century. They were first investigated for use in disorders of bone metabolism in the 1960s. They are now used clinically for the treatment of osteoporosis, Paget's disease, bone metastasis, multiple myeloma, and other conditions that feature bone fragility.

Did you know?

To maintain good kidney function, you should drink at least 3 quarts of water daily. Water dilutes urine and helps prevent concentrations of salts and minerals that can lead to kidney stone formation. Chronic dehydration is a major contributor to the development of kidney stones.

Did you know?

Earwax has antimicrobial properties that reduce the viability of bacteria and fungus in the human ear.

Defibrillator. Defibrillators are devices that supply a voltage charge to the heart in the hope of r Defibrillator. Defibrillators are devices that supply a voltage charge to the heart in the hope of r
Blood Flow through the Heart Blood Flow through the Heart
Pictures of Bypass (Heart) Pictures of Bypass (Heart)
Evidence-based practice: skin assessment Evidence-based practice: skin assessment
Stages for Treating Heart Failure Stages for Treating Heart Failure
Metric System: Measure of Weight and Volume Metric System: Measure of Weight and Volume
Video: What are Taste Receptors? How Does it Work? Animation

For a complete list of videos, visit our video library