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
Leviafan [203]
3 years ago
7

Why does the heart automatically adjust the flow of blood to match activity levels?

Health
2 answers:
vodomira [7]3 years ago
6 0
D. Organs and muscles require more blood under stress.

A is incorrect because blood cells don't get damaged due to activity.
B is incorrect because it is not the heart that needs oxygen; it's the body cells that are being worked, such as muscle cells in you're arm when you're lifting weights.
C is incorrect because the flow of blood doesn't change the level of oxygen in the blood; breathing does.
andreyandreev [35.5K]3 years ago
4 0
D. Organs and muscles require more blood under stretch.
Just think about it, when you go on a run or do something physical your blood levels increase. Exercising is all about getting your pulse up, because that's how you measure intensity. 
You might be interested in
Select the correct answer from each drop-down menu.
Veseljchak [2.6K]

Answer:

Listeria monocytogenes is a harmful pathogen and produces toxins that are poisonous to the human body.

Explanation:

Listeria monocytogenes is a bacterium that causes listeriosis producing very strong food infections in people, the percent of mortality of this bacterium is approximately 30%.

Listeria motocytogenes usually occurs in people with weak immune systems, people with this disease suffer muscle aches, diarrhea, and fever.

This bacterium is usually so strong that it affects other parts of the body and the bloodstream and, unlike salmonella, it can show its symptoms two months after eating contaminated food.

Answer:

Mike ate plain deli meat from the refrigerator and then got sick. Salmonella made him ill.

Explanation:

Salmonella is a bacterial infection, which affects the digestive system of people, this disease is usually contracted through contaminated food or water. Some foods that may have salmonella infection are raw meats, raw eggs, and vegetables.

Symptoms of salmonella infection usually occur between eight and 72 hours; and among the symptoms that are manifested are nausea, vomiting, drainage, headache among others, these symptoms may be present in people about two to ten days depending on each person and the treatment.

<em />

<em>I hope this information can help you.</em>

8 0
3 years ago
Which of the following are signs that a boy is going through puberty?
MA_775_DIABLO [31]

Correct answer choice is :


<h2>B) Voice gets deeper and growth of facial hair</h2><h2 /><h3>Explanation:</h3><h3 />

Puberty is the time in life when a boy or girl matures sexually mature. It is a method that normally occurs between ages 10 and 14 for girls and ages 12 and 16 for boys. It creates physical changes and transforms boys and girls differently. In girls: The first sign of puberty is normal breast development.

8 0
3 years ago
Read 2 more answers
the bystander effect teaches us that people are less likely to help out a healthy person when many people are around. true false
aniked [119]
I believe true... i think
8 0
3 years ago
When participating in sports and other physical activities, men should __________.
ikadub [295]
The answer is A. I took the quiz and test. this is what it was for edgunuity. hope this helped.
5 0
3 years ago
Read 2 more answers
Discuss three ways how you as a child would deal with the negative impactof a divorce
Sever21 [200]
First of all i would ignore it i would also try to express your feelings and write your feelings in a diary and last but not least i would see a therapist to talk about your personal problems
6 0
3 years ago
Other questions:
  • Should a action plan be changed if it's already in place ?
    6·1 answer
  • Which of the following is NOT a way to redirect your energy?
    5·1 answer
  • What does the body use calories for?
    6·2 answers
  • your self esteem is an important part of your emotional and mental health. Describe two benefits of having high self esteem
    14·1 answer
  • I just want to give back to the people the help me so much so the first person to answer gets brainlest
    5·1 answer
  • Please help with the definition
    5·1 answer
  • Malaria is spread by __________. A. mosquitoes B. infected food C. contaminated water D. people
    11·2 answers
  • as body temperature rises, the human body produces sweat as a means of cooling. this is an example of
    6·1 answer
  • Can someone log what they ate for a week each day and how much they ate
    9·1 answer
  • Passive peer pressure includes all of the following EXCEPT: A. TV and radio advertisements B. Threats C. Popular people at schoo
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!