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Tom [10]
2 years ago
6

Why do substances and circumstances sometimes harm the fetus and sometimes have no impact?

Biology
1 answer:
bogdanovich [222]2 years ago
8 0
From my research,the answer is there is no most important parts that form in a fetus. While a child is in their mothers womb every moment that fetus is growing and forming into a soon to be born baby is important .
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How was Bohr's atomic model similar to Rutherford's model?

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An important unit in the solar system is the astronomical unit, or AU, that refers to the average distance between _______ and t
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4.Kuiper

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identify the subcellular structure of the neuron that forms the basis for the transmission of nerve impulses. (2 points) describ
melisa1 [442]

The subcellular structures of neuron that forms the basis for transmission of nerve impulses are the synaptic vesicles.

What are the steps in impulse transmission between neurons?

  • The action potential or nerve impulse reaches the <u>axon</u> of neuron and depolarises the membrane.
  • Voltage gated Calcium channels open .
  • Arrival of action potential causes the synaptic vesicle to attach to presynaptic membrane.
  • Calcium influx triggers release of neurotransmitter.
  • This neurotransmitters bind to postsynaptic membrane and new impulses are created.

Synaptic vesicle under resting condition:

  1. The neurotransmitter molecules are stored in synaptic vesicles.
  2. If the neurotransmitter leak from the vesicles, they are destroyed by enzymes.
  3. During resting condition, they are placed randomly.
  4. When an impulse reaches the axon, vesicles are arranged in the presynaptic membrane.

Thus from the above we can conclude that, synaptic vesicles are the subcellular structures in transmission of nerve impulses and , under resting condition they are placed randomly.

To know more about transmission of nerve impulses :

brainly.com/question/840056

#SPJ4

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1 year ago
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