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Effectus [21]
3 years ago
13

What is the perimesencephalic subarachnoid hemorrhage?

Biology
1 answer:
Nadusha1986 [10]3 years ago
6 0

Answer: Perimesencephalic haemorrhage (PSH) is defined as confined bleeding in the cisterns around the mesencephalon, called: the cerebral aqueduct, tegmentum, the tectum, and the cerebral peduncles.

Explanation:

PSH has a probable incidence in patients with negative angiographies of around 50% to 75%. It is a pathology with no predominant age range, reported in all ages in the literature, including childhood.  By definition, the condition corresponds to a tomographic finding of blood in the interpeduncular cistern that may extend to the other portions of the mesencephalon. This pathogenesis has not yet been completely clarified, but it is believed to come from a nonarterial source, assuming venous or capillary origin.

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Explain how protoadry prevents self polllination​
NeTakaya

Explanation:

Protandry - Male reproduction organ/anthers androecia/ stamens mature earlier than female reproduction organ/ carpels/ stigma/ pistil/ gynoecium in a flower. (ii) Self sterility - pollen grains are sterile to stigma of the same plants or same flowers.

I hope it's helpful for you.....

5 0
3 years ago
Which of the following is the correct definition of a wave? A disturbance that transfers energy from one place to another ocean
lys-0071 [83]
The first one; a disturbance that transfers energy from one place to another
4 0
3 years ago
A student conducted an experiment to test whether talking to plants would help them grow faster. The student talk to one group o
stepladder [879]
The point of the experiment has been foiled by the choice to hand water one group and use sprinklers on the other. Whether talking to the plant or not did anything can't be proven because of this. If the student were to try to publish this experiment and the outcomes. Critics would be able to use the unequal treatment in water supply as a reason to discredit his/her experiment and dismiss the claims. When performing an experiment like this it is very important to treat each side as equal as possible.
7 0
4 years ago
Read 2 more answers
Explain why Agriculture is increasingly harming the environment?
sergejj [24]

Answer: Agriculture is increasingly harming the environment for multiple reasons. One being deforestation. Deforestation reduces ecological services it provides humans produces large amounts of Carbon Dioxide which adds to greenhouse gases -> which add to our current problem with climate change. Additionally, the pesticides  and fertilizers agriculture uses can be harmful to the nearby ecosystems as it can end up in surrounding rivers which causes it to cycle back.

4 0
3 years ago
How is the ruminant digestive system different than human digestive system?​
bulgar [2K]

background info:

Digestive system in animals is an important system in the context of digestion of ingested food into simpler forms that could be easily absorbed by the body cells.

This provides all the essential compounds needed by the body for the existence and development of the living organism. Different digestive systems have evolved according to different species, their feeding patterns, and their habitats.

answer:

Ruminant species survive only on plant matter. They are herbivorous animals.

Therefore, the digestive system of ruminants is evolved with the presence of a rumen which is a complex stomach with four different compartments.

Humans are omnivorous who depend on plant and animal matter both thus, their digestive system composes of one stomach.

This is the key difference between digestion of humans and ruminants.

hope this helped

8 0
3 years ago
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