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choli [55]
2 years ago
5

PLEASE HELP ASAP!!!!

Biology
1 answer:
alexandr402 [8]2 years ago
7 0

Answer:

It's the tundra

Explanation: I say that because the tundra, which literally means "treeless plain," is the coldest biome. Extremely low temperatures, limited precipitation, a short growth season, minimal biodiversity, and nutrients in the form of decaying organic matter are all characteristics of tundra.

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Impulses originating in the part of the brain called the medulla would most directly affect which body structure?
gtnhenbr [62]

The question is incomplete. The complete question is:

Question: Impulses originating in the part of the brain called the medulla would most directly affect which body structure?

a. A leg muscle

b. A ligament

c. An arm bone

d. The heart

Answer:

d. The heart

Explanation:

The medulla oblongata contains a number of reflex centers for regulating vital body functions such as heartbeat, breathing, and vasoconstriction. The medulla contains several nuclei, a collection of neuronal cell bodies.

For example, impulses originated in the cardiovascular center regulates the rate and force of the heartbeat and the diameter of blood vessels. Impulses from the cardiovascular center flow along sympathetic and parasympathetic neurons. An increase in sympathetic stimulation from the cardiovascular center of medulla increases heart rate and contractility while a decrease in sympathetic stimulation decreases heart rate and contractility.

5 0
3 years ago
Which zone on earth is best describes by its constant warm temperatures
alexandr402 [8]

Answer:

Tropical Zone

Explanation: Its near the equator with warm air masses with the average temperature in  the coldest month is 18 °C. This is warmer than the average temperature of the warmest month in the polar zone.

6 0
3 years ago
Can someone help me on this question THANKS :))
Vlad [161]

Answer:

They can interbreed

Explanation:

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What are Purkinje fibers?
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