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morpeh [17]
3 years ago
11

The cladogram shown here shows similarities and differences among several classes of vertebrates. Anatomically, the four have __

___________ limb structure as their common ancestor. We might separate the mammals from the other three classes because they _______________.
Biology
2 answers:
lana [24]3 years ago
6 0

Answer:

homologous; have mammary glands

Explanation:

<u>USA Test Prep :0</u>

Advocard [28]3 years ago
5 0

Answer:

homologous; have mammary glands

Explanation:

                                   

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Explanation:

Yams are produced through slips, which have been generated again from sprouts of mature yams, rather than seeds, as most other crops are. Split a yam in part and place one half in a bowl of cool water to develop sprouts.

4 0
2 years ago
A tricyclic antidepressant has been prescribed to a 77-year-old client whose current medication regimen includes omeprazole, cap
diamong [38]
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According to prep u/ Course point

3 0
3 years ago
Read 2 more answers
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
The rise of water in a narrow tube against the force of gravity is called what?
morpeh [17]

Answer:

Capillarity

Explanation:

Capillarity is the rising and falling of liquid in a narrow tube

4 0
2 years ago
Cells are to tissues as organs are to
Scrat [10]
Organ systems is the answer

4 0
3 years ago
Read 2 more answers
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