1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
julia-pushkina [17]
3 years ago
8

During exercise, sympathetic input to the heart is increased. Stroke volume is often maintained, or even increased, even though

heart rate is also increasing. How is this possible
Biology
1 answer:
pantera1 [17]3 years ago
4 0

Answer:

1. Sympathetic input increases ventricular contractility, thereby increasing stroke volume.

2. Sympathetic input decreases conduction time within the heart, decreasing the delay between atrial and ventricular contractions.

3. Sympathetic input increases the speed of ventricular contraction.

You might be interested in
What part of the respiratory system do you think is most important? Provide a thorough explanation to support your answer.
Luden [163]

Answer:

The most important are the lungs, more precisely the alveoli.

Explanation:

Alveoli are structures of the lungs where gas exchange occurs. They allow oxygen from the air to pass into blood. Oxygen diffuses through the walls of alveoli into the capillaries that surround it. Oxygen is then bonded with the iron in red blood cells and travels to the heart. The heart then sends the oxygenated blood out to all the cells in the body.

4 0
3 years ago
Describe in your own words how a plant with a yellow pod can have two green-pod parents.
kupik [55]

Answer:

Selective breeding.

Explanation:

Sorry thats the only one i can think of. BTW have u watched lucky star.

I love anime.

4 0
3 years ago
Dna is made of chains of four smaller molecules called.
lilavasa [31]

Answer:

DNA is made of chains of four smaller molecules called "Nucleotides".

Explanation:

A molecule consisting of a nitrogen-containing base (adenine, guanine, thymine, or cytosine) in DNA is known as a nucleotides.

7 0
2 years ago
Biological membranes are selectively permeable, allowing certain molecules to cross the membrane, but not others. Sort the molec
Anuta_ua [19.1K]
Passive transport:

For simple diffusion = fatty acids, amino acids, steroid hormones (because they’re non-polar)

Facilitated diffusion = N2 and Cl-
3 0
3 years ago
Difference between scalawags and carpetbaggers
Dmitriy789 [7]
Scalawags are from the North I think. And Carpetbaggers are from the South.

6 0
2 years ago
Read 2 more answers
Other questions:
  • What would decrease peripheral resistance to blood flow?
    11·1 answer
  • Why are fresh vegetables sprinkled with water ay market
    7·1 answer
  • 7. Both plant cells and animal cells contain mitochondria and yet there were not visible in the cells you viewed in this lab. Do
    15·2 answers
  • Which statement(s) corresponds to cellular respiration? Choose all that apply.
    10·2 answers
  • What does it mean when a tree is said to be dormant?
    6·1 answer
  • FIRST ONE WHO ANSWERS THIS QUESTION CORRECTLY WILL BE MARKED BRAINLIEST!
    7·1 answer
  • 33. Which of the following energy sources emits carbon dioxide, creating pollution?
    13·1 answer
  • Which of the following is a societal benefit to the application of biotechnology? a. increased crop production b. development of
    6·2 answers
  • How do the protists in the pond water differ from each other
    10·1 answer
  • Where are peripheral proteins located
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!