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
olchik [2.2K]
3 years ago
6

Robert decides to go for a run when he gets home from school. As he begins running, his breathing rate starts to increase. What

are the mechanisms that cause his breathing rate to increase?
A.
When carbon dioxide levels in the blood decrease, the respiratory center sends signals to the alveoli to increase the volume that they expand.
B.
When oxygen levels in the blood decrease, the respiratory center sends signals to the diaphragm to increase the rate at which it contracts and relaxes.
C.
The respiratory control center senses the need for more oxygen, which causes the trachea to push and pull air more forcefully.
D.
The diaphragm senses the need for more oxygen, which causes it to expand and contract more quickly in order to inflate and deflate the lungs.
Biology
2 answers:
professor190 [17]3 years ago
7 0
When a person starts exercising (running) the increase in energy expenditure causes an elevation of oxygen consumption and carbon dioxide production. To compensate for this the respiratory control center senses the LOW oxygen level in blood and the HIGH carbon dioxide level and signals the diaphragm to contract and relax more often (INCREASE THE RATE).

The answer is B
aleksklad [387]3 years ago
3 0
<h2>Answer:</h2>

The correct answer is option B which is low level of oxygen in blood is sensed by the brain respiratory center which signals the diaphragm to increase the rate at which it contracts and relaxes.

<h3>Explanation:</h3>
  • As we are running, our muscles are are using great amount of energy relative to energy productions in these cells. So these cells start breaking the glucose at higher rate to meet up energy needs.
  • So oxygen is used in respiration and its amount suddenly decrease.
  • to increase this oxygen level brain signals to raise the breathing rate.


You might be interested in
Why the skin is categorised as an organ?
DaniilM [7]

The integumentary system (skin) has been called a membrane and an organ but, it is generally considered a system because it has organs that work together as a system. It is sometimes considered an organ because it contains several types of tissues and a membrane and it covers the body.

8 0
3 years ago
Read 2 more answers
What type of lipid is estrogen
Ivahew [28]
The type of lipid that estrogen is testosterone 
8 0
3 years ago
Read 2 more answers
Compare the processes of mitosis and meiosis by explaining the number of cells formed in each process, Number of chromosomes in
andreev551 [17]

Answer:

1) In mitosis, a single cell is divided into two daughter cells while in meiosis a single cell is divided into four daughter cells.

2) Mitosis occurs in body cells in which sperm and egg cells combine and make a diploid zygote while meiosis are present in sex cells in which haploid cells are produced.

3) In mitosis, the number of chromosome is double i. e. Diploid while in meiosis the number of chromosome is half i. e. haploid.

4 0
3 years ago
An average what takes about 5 kilograms of Carbon Dioxide a year and makes about the same amount of oxygen for us to breathe.
swat32
A tree is the answer
6 0
3 years ago
The laws of superposition and original horizontality are best applied to?
Ksju [112]

Answer:

Your answer is sedimentary rocks

Explanation:

Hope this helped :)

6 0
3 years ago
Other questions:
  • Explain the meaning of the statement: "Tonicity is only useful as a comparative term."
    15·1 answer
  • When a refrigerator stops working, you must check the food temperature. If the temperature of the food is above _______, it must
    11·1 answer
  • Arianne recently traveled abroad where she enjoyed eating food from different countries and learning about different cultures. A
    7·2 answers
  • What are the ten characteristics of life?
    11·2 answers
  • Fact or Fantasy? Just guess, no research!
    14·2 answers
  • Why are Canada’s Evergreen Forests considered “Earth’s Northern Lungs”? (think about the photosynthesis equation)
    6·1 answer
  • How is classification of animal related to its adaptational features​
    5·2 answers
  • Can cells break down molecules in patients with cystic fibrosis
    12·1 answer
  • Sound travels at 343 meters per second. How far can sound travel in 2 seconds?
    10·1 answer
  • According to the dietary guidelines, adults should _______________ intake of fat-free or low-fat milk and milk products.
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!