the autonomic (involuntary) nervous system controls the rate at which the heartbeats. sympathetic (fight or flight) signals speed up the heart’s rate while parasympathetic (rest and digest) signals slow it down. The part or parts of the heart that forms sympathetic and parasympathetic neurons form synapses is called cardiac plexus.
Cardiac plexus is a plexus of the nerves that are present at the base of the heart and is divided into superficial and deep part. The sympathetic and the parasympathetic nerves form synapses with heart in the form of cardiac plexus.
The sympathetic nerves are responsible for activating flight or fight mode while parasympathetic nerves are responsible for restoring the normal body state.
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Water and sodium ions are reabsorbed in the proximal tubule in a relationship that results in a decrease in tubular fluid volume that is isotonic to plasma.
<h3>What do you mean by Proximal tubule?</h3>
A Proximal tubule may be defined as the portion of the nephron that lies in between Bowman's capsule and the loop of Henle.
The major function of the proximal tubule is to reabsorption of sugar, sodium, chloride ions, and water from the glomerular filtrate. It decreases the volume of tubular fluid.
Therefore, water and sodium ions are reabsorbed in the proximal tubule in a relationship that results in a decrease in tubular fluid volume that is isotonic to plasma.
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Answer:
Globally, the primary sources of greenhouse gas emissions are electricity and heat (31%), agriculture (11%), transportation (15%), forestry (6%) and manufacturing (12%). Energy production of all types accounts for 72 percent of all emissions.
<h3><u>Answer;</u></h3>
D) India was a separate continent until forty-five million years ago.
<h3><u>Explanation</u>;</h3>
- <em><u>Continental drift serves as one of the evidence of evolution. Different kinds of animals and plants live in different parts of the world. This is true now, and it was true in the past. </u></em>
- Therefore, when a fossils of the same animal or plant is found on different continents, then that is evidence that those two continents may have been a single continent when those fossils were formed.
- Fossils show that the continents drifted because similar fossils were found where the continents were together millions of years ago.
Answer:
We get the materials to make new cells through...
biosynthesis, which puts small organic molecules together to create larger molecules.
Explanation:
Biosynthesis is the process in your body that turns simple structures into more complex structures. It can happen within a single cell (or within a single organelle within a cell), or across multiple cells. In this case, multiple, since it is referring to humans.
Either this option or A.
