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anzhelika [568]
3 years ago
8

The parts of the plant(angiosperms)involved in producing gametes(pollen

Biology
1 answer:
Shkiper50 [21]3 years ago
5 0
The reproductive system. The seeds are a mean for plants to reproduce themselves
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Parkinson disease is associated with demyelination of CNS neurons. a pyramidal nerve tract lesion. insufficient production of ac
Pepsi [2]

Answer:

The correct option is: <em>a deficiency of dopamine in the substantia nigra.</em>

Explanation:

The substantia nigra is the principal site involved in the physiopathology of Parkinson´s disease.

Cells from this area degenerate and die progressively causing important degeneration in the central nervous system. The cells that die -with no known reason- are those that produce dopamine and proportionate dopaminergic innervation to the encephalon. In fact, almost all the symptoms exhibited by patients with the disease can be explained by the lack of dopamine in the substantia nigra.  

This area uses the neurotransmitter to communicate neurons from the base ganglia. Ganglia are responsible of modulating and modifying movements.

The nigrostriatal system participates in planning and automatic execution of learned movements. When the ganglia activity decreases, so it does the amount and velocity of movements, something typical of the disease.  

3 0
2 years ago
Hi take points.....................​
Montano1993 [528]

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Explanation:

5 0
3 years ago
Describe what will occur the population if it increases in number when food is scarce?
mote1985 [20]

Answer:

more people will die

Explanation:

If you have a big population and little food mor peple will die.

4 0
3 years ago
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If an individual has the genotype Dd, what alleles can it pass on to its
dlinn [17]

The offspring could receive either D or d.

8 0
3 years ago
Today I.d.k what to ask. I asked what is wrong with me because I am lactose intolerance, and basically I hate milk, and why are
harina [27]
Our bodies produce an enzyme called lactase. This enzyme helps our bodies digest lactose (a sugar found in milk). As we age, the amount of lactase our bodies produce decreases. Some people don’t produce as much as others. If you are lactose intolerant, it means your body doesn’t produce a lot of lactase. One option is to drink milk with lactase added to it.
Example: Lactaid
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3 years ago
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