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
Naily [24]
3 years ago
5

The list below includes three organ systems that are directly used when a human runs. circulatory system muscular system skeleta

l system Which system should also be included in the list?(1) immune system
(2) digestive system(3) reproductive system
(4) nervous system
Biology
1 answer:
mote1985 [20]3 years ago
3 0

Answer:

(4) nervous system

Explanation:

When humans run, the sympathetic division of the autonomic nervous system is activated. Activation of the sympathetic nervous system and release of hormones by the adrenal medulla increase the heart rate and force of heart contraction to ensure sufficient blood supply to the skeletal muscles. This is required for oxygen supply to muscles to sustain the running. Other effects of activated sympathetic division are increased blood glucose levels due to the breakdown of glycogen, increased breathing rate, etc.

You might be interested in
What happens when a hypothesis is not supported
Temka [501]
<span> For a start, when you have a question that needs answering in science, you formulate a null hypothesis. That is a negative statement which you then set out to prove or disprove. This is just a convention. So if your initial question is for example, "Does sugar dissolve in water?"

Your null hypothesis will be "Sugar does not dissolve in water."
You then set up your experiment and get some data.

Now if your data doesn't support your null hypothesis then you reject it and make the statement ,"Sugar does dissolve in water." As you can see from this simple example, a non-result is still a result so the idea of formulating new tests as mentioned by another answerer isn't necessary and in some ways is the incorrect thing to do. In science, hypotheses are often not supported by data and i would argue that this is the case a lot of the time. A non-result is still a result and you will have plenty to write about whichever way it goes. </span>
5 0
3 years ago
A scientist finds a fossil that she thinks might make a good index fossil.
Mekhanik [1.2K]

Answer:

An index fossil is also known as guide fossils or indicator fossil. They are fossils used to determine and identify geologic periods.

The main characteristics of an index fossil include :

1.It must be distinctive.

2.It must be widespread.

3. It must be abundant

4. It must be limited in geologic time.

Due to trends and studies of most fossil-bearing rocks being formed in the ocean, the major index fossils are mostly marine animal or plant organisms.

6 0
3 years ago
Read 2 more answers
Antibiotics have been used to treat bacterial infections since the 1940s. In
mamaluj [8]
The first answer because it’s natural selection when the weak die off the the strong get stronger also the strong produces more which stops antibiotics form working which is why we have antibiotics consistently changing
4 0
3 years ago
Which of the following is not a way that science influences society
Alex777 [14]

What are the choices?


6 0
3 years ago
What is a dose-response relationship?
astra-53 [7]

change on an organism caused by different levels of exposure or doses to a stressor after a certain exposure time

7 0
2 years ago
Other questions:
  • Which climates have high annual amounts of rain?
    14·1 answer
  • PLS HELP! WILL GIVE BRAINLIST!
    12·1 answer
  • HELP I NEED URGENT HELP! THIS IS DUE IN 5 MINUTES
    8·1 answer
  • When ATP loses a phosphate, energy is released and __ is formed
    10·2 answers
  • Please answer my question. I would mark it as a brainlist answer if it helps me.
    14·1 answer
  • What two things cause differences in the density of ocean water​
    8·1 answer
  • Through which of the following processes are plant communities taking over the ecosystem
    14·1 answer
  • How can a baby show traits that the parents don't show
    10·1 answer
  • Evolution is a long and arduous process that has created humans with many different traits. Can you think of some genetic mutati
    10·1 answer
  • Which of the following is commonly grown as a green manure crop?
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!