Explanation:
I don't think he provided all the information or some words are misspelled
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.
Meiosis<span> has two rounds of genetic separation and cellular division while </span>mitosis<span> only has one of each. In mieosis </span><span>homologous chromosomes separate leading to daughter cells that are not identical.in </span>mitosis<span> the daughter cells are the same to the parent as well as to each other hope it helps
if you need help with anything else just ask :)</span>
Answer:
All choices are correct
Explanation:
The most well known was a botanist who studies plants too realized that plats,living things are made of cells so most likely the answer would be all living things are made of cells
I hope this helps, I am only in the 7th grade and this was pretty easy to me
True because excretory is like sweat and you sweat through your skin- more specifically the pores in your skin
