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 41 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
:D TYSM

adf223

  • Member
  • Posts: 304
Reply 3 on: Yesterday
Gracias!

« previous next »
 

Did you know?

Women are two-thirds more likely than men to develop irritable bowel syndrome. This may be attributable to hormonal changes related to their menstrual cycles.

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?

Vital signs (blood pressure, temperature, pulse rate, respiration rate) should be taken before any drug administration. Patients should be informed not to use tobacco or caffeine at least 30 minutes before their appointment.

Did you know?

Normal urine is sterile. It contains fluids, salts, and waste products. It is free of bacteria, viruses, and fungi.

Did you know?

The top 10 most important tips that will help you grow old gracefully include (1) quit smoking, (2) keep your weight down, (3) take supplements, (4) skip a meal each day or fast 1 day per week, (5) get a pet, (6) get medical help for chronic pain, (7) walk regularly, (8) reduce arguments, (9) put live plants in your living space, and (10) do some weight training.

HEART HEART
Tissues of Heart Tissues of Heart
Color enhanced X-ray showing a pacemaker implanted in the left side of the chest and the electrode w Color enhanced X-ray showing a pacemaker implanted in the left side of the chest and the electrode w
Normal conduction pathway in the heart. Normal conduction pathway in the heart.
Hostility and Heart Disease Hostility and Heart Disease
The human heart The human heart
Video: Definition of heart rate

For a complete list of videos, visit our video library