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Alja [10]
3 years ago
10

Select an example of an open system. A.) earth B.) the atmosphere C.) the water cycle

Biology
1 answer:
Gekata [30.6K]3 years ago
8 0

Answer:

A. THE EARTH

Explanation:

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Why do scientists use comparisons between fossils and existing species to classify organisms?
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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.

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3 years ago
Any one can please fill all the labellings.<br>thanks:)​
Vika [28.1K]

Answer:

1 = True Ribs or Vertebrosternal Ribs

2 = False Ribs or Vertebrochondral Ribs

3 = Floating Ribs

4 = Thoracic Vertebrae 1 (T1)

5 = Ribs

6 = Coastal Cartilage

Explanation:

Thus, The Whole Structure is known as Rib Cage or Thoracic Cage

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