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maks197457 [2]
3 years ago
10

What are the two types of blood vessels?

Biology
2 answers:
mrs_skeptik [129]3 years ago
4 0

Answer:

veins witch carry blood to the heart And ARTERY witch carry blood to other places of the body  :)

Explanation:

xeze [42]3 years ago
3 0
Answer- arteries, veins , capillaries
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3. What is the difference between the environmental impacts of particles, such as dust and
Minchanka [31]

Answer:

Environmental impacts of particles, such as dust and  smoke, released from livestock production - impair the visibility, can lead to acid rain, degrade the ecosystem

Environmental impacts of greenhouse gases released from livestock  production - increase in atmospheric temperature

Explanation:

Environmental impacts of particles, such as dust and  smoke, released from livestock production -

Release of particles such as  dust and  smoke is referred to as particulate pollution. These particle makes the air unfit for .breathing. If humans inhale it, it will adversely affect the heart and lungs.

These particle impair the visibility, can lead to acid rain, degrade the ecosystem etc.

Environmental impacts of greenhouse gases released from livestock  production -

Green house gases will lead to increase in atmospheric temperature

4 0
2 years ago
How do scientists calculate population density ?
Viefleur [7K]
They use a formula and that formula is 
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3 years ago
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The prolonged electrical depolarization of cardiac muscle cells that occurs during contraction is due primarily to the persisten
luda_lava [24]

Answer:

The prolonged electrical depolarization of cardiac muscle cells -that occurs during contraction- is due primarily to the persistent influx of calcium ion

Explanation:

The action potential of the heart muscle is longer with respect to skeletal muscle (around 300 milliseconds), and this is due to the activity of calcium (Ca⁺⁺ ) in the intracellular compartment.

The initial depolarization of cardiac muscle fiber depends on the entry of sodium (Na⁺) into the cell. However, for the action potential to occur and be maintained, Ca⁺⁺  must increase its cytoplasmic levels, which depends on:

  1. The increase in intracellular sodium induces the release of Ca⁺⁺ from the sarcoplasmic reticulum.
  2. Calcium entry from the extracellular space through the voltage dependent Ca⁺⁺ channels.
  3. The entry of extracellular Ca⁺⁺ causes the release of more Ca⁺⁺ ions by the sarcoplasmic reticulum, further increasing its intracellular concentration.

This is how the ion that guarantees the duration of the action potential of the cardiac muscle cell is the Ca⁺⁺.

Learn more:

Calcium, sodium and cardiac muscle cells brainly.com/question/4473795

4 0
3 years ago
In which step of translation does the RNA become charged?<br> activation<br> elongation
EastWind [94]
RNA becomes charged during the activation process
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3 years ago
name the branch of biology that deals with the study of animals and plants in different parts of world.​
frosja888 [35]

Answer:

Ecology

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Brainliest plz

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2 years ago
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