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
timurjin [86]
2 years ago
5

What is the charecteristics of an alveolus​

Biology
1 answer:
Alla [95]2 years ago
3 0
  • Each alveolus is cup-shaped with very thin walls.
  • It’s surrounded by networks of blood vessels called capillaries that also have thin walls.
  • The oxygen you breathe in diffuses through the alveoli and the capillaries into the blood.
  • The carbon dioxide you breathe out is diffused from the capillaries to the alveoli, up the bronchial tree and out your mouth.
  • The alveoli are just one cell in thickness, which allows the gas exchange of respiration to take place rapidly.
You might be interested in
The most effective sites for self-stimulation for reward are along the trajectory of the ______________ axons arising in the ven
MatroZZZ [7]

Answer:

The answer is dopamine, tegmental

Explanation:

The most effective sites for self- stimulation for reward are along the trajectory of the Dopamine axons airising in the ventral Tegmental area and projecting to the forbiden.

5 0
2 years ago
Rocky mountain juniper (juniperus scopulorum) and one-seeded juniper (j. monosperma) have overlapping ranges. pollen grains (whi
bixtya [17]

Answer:

Mechanical isolation

Explanation:

mechanical isolation is a form of prezygotic reproductive barrier, whereby similar species organisms become isolated and unable to successfully interbreed with each other to form zygote, as a result of incompatibility of their reproductive organ or structure, which prevents them from copulating. As a result of this, both species become separated as there is no gene flow between both.

The two species of juniper can be said to be kept separate by <em>mechanical isolation</em>, due to the differences and incompatibility of their reproductive structure.

8 0
2 years ago
Read 2 more answers
Which of the following hormones is directly
3241004551 [841]

Answer:

adrenaline is the hormone which is directly controlled by nervous system

7 0
2 years ago
What conditions account for the development of highly diverse habitats in coastal waters?
kirza4 [7]
<span>I think for the most part, the warmth of the waters determine what lives in them. In warmer coastal waters, you are going to find coral reefs that provide homes to millions of species of fish and micro-organisms.</span>
4 0
3 years ago
How did wegner use climate evidence to support his hypothesis​
Novay_Z [31]

Explanation:

Wegener used evidence of climate change to support his hypothesis. As a continent moves toward the equator, its climate becomes warmer. As a continent moves toward the poles, its climate becomes colder. But the continent carries with it the fossils and rocks that formed at its previous locations.

5 0
3 years ago
Read 2 more answers
Other questions:
  • Why does the information in dna have to be copied into rna?
    15·1 answer
  • PLEASE ANSWER Which explains how the Calvin cycle and the Krebs cycle differ? The Calvin cycle uses ATP to make glucose. The Kre
    10·1 answer
  • Which of these substances is matched with its correct organic group?
    13·1 answer
  • Where are proteins made in cell
    10·2 answers
  • Why does your pulse rate increase as your level of activity increases?<br><br>Please answer quick!
    13·2 answers
  • Delia has a genetic disease that causes her to be weak and tired because her blood cells are not able to carry enough oxygen to
    14·2 answers
  • 1-CUALES SON LAS ZONAS DE PRODUCCION DE GALLINAS PONEDORAS MAS IMPORTANTES DE LA ARGENTINA. 2-BUSCAR EN INTERNET CUALES SON LAS
    10·1 answer
  • Over what length of time do the processes of weathering and erosion occur?
    11·2 answers
  • Label the following terms in the following picture
    13·1 answer
  • What are the four possible gametes of an organism has the genotype KkMm?
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!