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
lutik1710 [3]
3 years ago
6

Yawning is a reflexive action that is often associated with sleepiness. when a person yawns, the mouth opens, and a longer than

normal breath of air is inhaled, followed by a longer than normal exhalation. hypothesizing that yawning has a regulatory mechanism similar to breathing, scientists conducted an experiment on college students to test the effect of ambient carbon dioxide levels on yawning. the scientists investigated carbon dioxide levels in their experiment because high carbon dioxide levels in the ________ signal control centers in the brain to increase rate and depth of inhalations and exhalations.
Biology
2 answers:
lina2011 [118]3 years ago
8 0
The level of carbon dioxide in the arterial blood which is the answer signals the control centers in the brain to increase the rate as well as the depth of breathing specifically the inhalation and exhalation. Arterial blood is the oxygenated blood in one's circulatory system.
drek231 [11]3 years ago
6 0
<h2>Answer:</h2>

The correct answer in the blank is arterial blood.

<h3>Explanation:</h3>

The elevated levels of CO2 in the arterial blood signals the brain to increase the rate and depth of inhalations and exhalations.

Blood in the veins normally has the high concentration of CO2.

<em><u>Arterial blood contains very low level of CO2 and High level of CO2 in this blood signals brain to increase breathing rate.</u></em>

You might be interested in
The oxygen produced by the chloroplasts passes out the cell by A) Diffusion B) Digestion or C) Respiriration
Y_Kistochka [10]
The oxygen produced by the chloroplasts passes out the cell by Cellular Respiration. So the answer would be D :) 
7 0
3 years ago
Read 3 more answers
What is the type of asexual reproduction that occurs in yeasts?
34kurt

Answer:

Budding is the asexual reproduction that happens in yeasts

3 0
3 years ago
Read 2 more answers
Please help me with these questions on the Skeletal System
BartSMP [9]

Answer:

1 - D- Transport oxygen-rich blood to the body

Explanation:

2- D- Common Beetle

3- D- Protects the brain from injury

4- D- Attach Bones to muscles and bones to bones.

8 0
3 years ago
Read 2 more answers
Each of pollan's chapters focuses on one particular plant and pollan suggests that each plant satisfies a specific human desire.
Debora [2.8K]

Each of pollan's chapters focuses on one particular plant and pollan suggests that each plant satisfies a specific human desire. The potato satisfies our desire for control – even more so now that we control its genes.

Though people might consider potatoes ordinary everyday fare, history demonstrates how crucial this vegetable is to humankind. Prior to the invention of the potato, conditions were challenging; many people, particularly in northern European nations, suffered from starvation and famine.

Malnutrition and starvation were eradicated in the countries that embraced the potato, and as a result, they grew stronger and more powerful. It is even conceivable that the potato spread resulted in a transfer of power from southern European nations to northern ones.

To learn more about pollan's chapters click here

brainly.com/question/16975537

#SPJ4

3 0
1 year ago
What would make a good fossil ?
RoseWind [281]
The remains of a dead organism
8 0
3 years ago
Read 2 more answers
Other questions:
  • A nursing student has been assigned to care for a client with digeorge syndrome. the student has reviewed the clinical manifesta
    9·1 answer
  • What did scientists observe using the earliest microscopes.
    15·1 answer
  • Which area of the brain adjust other motor output centers in cns?
    8·1 answer
  • what happens when a cell is subjected to a solution where the water concentration is higher than that inside a cell? hypotonic s
    13·1 answer
  • Can anyone help?
    5·1 answer
  • You look through a microscope, and see a cell with the following characteristics. What phase of the cell cycle is this cell in?
    14·1 answer
  • How is friction harmful when riding a bike?
    8·2 answers
  • According to the gene-chromosome theory, witch statement is true...
    11·1 answer
  • Do all cells have a cell plate?
    10·1 answer
  • What is the benefit of using sunscreen when working outside every day?
    12·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!