Question

How could catecholamines cause a decreased afterload?

How could catecholamines cause a decreased afterload?

Science   Anatomy-And-Physiology   
0 0
Add a commentTranscribed image text
Next >

Homework Answers

Answer #1

Afterload is the resistance that has to overcome by the ventricle of the heart to eject the blood to the aorta from the ventricle at the time of ventricular contraction

There is inverse relationship between force of contraction (stroke volume) and afterload. When force of contraction of myocardium increase - More amount of blood will be ejected from the ventricle during systole. That increases Stoke volume result in decreased afterload.

Catecholamines like epinephrine and norepinephrine have positive ionotropic effect on heart (myocardium). That means Catecholamines increases the force of contraction thereby increases the stroke volume result in decreased afterload.

0 0
Know the answer?
Your Answer:

Post as a guest

Your Name:

What's your source?

Earn Coins

Coins can be redeemed for fabulous gifts.

Log In

Sign Up

Not the answer you're looking for?
Ask your own homework help question
Similar Questions
4. What would cause the release of catecholamines from the adrenal medulla? Describe the roll of...
4. What would cause the release of catecholamines from the adrenal medulla? Describe the roll of these hormones.
1: The parasympathetic nervous system will cause a) decreased secretion in the digestive glands b) increased...
1: The parasympathetic nervous system will cause a) decreased secretion in the digestive glands b) increased secretion in the digestive glands 2:  The parasympathetic nervous system will cause a) your nose to run b) your nose to be dry 3: The parasympathetic nervous system will cause a) decreased motility in the GI tract b) increased motility in the GI tract
How could activating a transcription factor cause long-term cellular changes?
How could activating a transcription factor cause long-term cellular changes?
If the Common Cause factor is decreased from 10% to 5%, The PFDavg of the system...
If the Common Cause factor is decreased from 10% to 5%, The PFDavg of the system A. Increases B. Decreases C. Has No effect D. B or C
Explain how endospore-forming bacteria could cause a scientist to believe in spontaneous generation.
Explain how endospore-forming bacteria could cause a scientist to believe in spontaneous generation.
Hyperparathyroidism would NOT cause: Group of answer choices decreased bone density increased secretion of calcium at...
Hyperparathyroidism would NOT cause: Group of answer choices decreased bone density increased secretion of calcium at the kidneys decreased calcium lost in the urine hypercalcemia (too much calcium in the blood)
You discover that the underlying cause of a disease is decreased expression of the protein X...
You discover that the underlying cause of a disease is decreased expression of the protein X due to a lower amount of the mRNA encoding protein X in cells. You find the corresponding mutation in the genome related to this disease. What kind of defect caused by this mutation can create the defective expression of the protein X? Describe two possible mechanisms (there are many possibilities). The best answers will include the nature of the mutation and how it impacts...
how could we cause the equilibrium to shift to the left? CH4(g) + 2H2S(g) => CS2(g)...
how could we cause the equilibrium to shift to the left? CH4(g) + 2H2S(g) => CS2(g) + 4 H2(g) K = 2.5 x 10-3
1. Match the underlying cause to the correct type of shock - Severely decreased myocardial contractility...
1. Match the underlying cause to the correct type of shock - Severely decreased myocardial contractility - Mechanical blockage of cardiac filling - Inadequate circulating blood volume - Excessive vasodilation Type of Shock - Cardiogenic - Obstructive - Hypovolemic - Distributive 2. Identify 4 complications of shock (from any of the 4 types).
What circumstances could cause impairment of internal audit function independence or internal auditor objectivity? How should...
What circumstances could cause impairment of internal audit function independence or internal auditor objectivity? How should an identified impairment be handled? Internal auditing: assurance and advisory services 4th edition.
ADVERTISEMENT
Need Online Homework Help?

Get Answers For Free
Most questions answered within 1 hours.

Ask a Question
ADVERTISEMENT