The respiratory structure that contracts and relaxes to allow air to flow in and out of the lungs is option(c) i.e, the diaphragm.
<h3>What is
the diaphragm?</h3>
The diaphragm, a delicate skeletal muscle that separates the chest from the belly, is located at the base of the chest. When you breathe in, it flattens and shrinks. As a result, the lungs experience a vacuum effect that draws air in. The diaphragm relaxes and the air is forced out of the lungs when you exhale.
signs of diaphragm issues:
- Acid reflux, heartburn, coughing, and difficulty swallowing.
- alterations to skin tone (skin may turn blue).
- rapid heartbeat, pressure in the chest, and/or breathing difficulties (especially when lying down).
- Headaches.
- Hiccups that persist or recur frequently.
Patients who need surgery for conditions affecting the chest, including diaphragm issues, are treated by a thoracic surgeon.
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The one that is loosing electron is oxidation process and the one that is gaining electron is reduction.
b) Reduction reaction occur at cathode while oxidation reaction occur at Anode.
Explanation:
The main difference between the reduction and oxidation process is based on gaining and loosing of electron.
Reduction and oxidation both occur simultaneously. one is loosing electron and other is gaining. The one that is loosing electron is oxidation process and the one that is gaining electron is reduction.
B) Reduction reaction occur at cathode while oxidation reaction occur at Anode
The powerhouse of the cell: That is a term used to describe the MITOCHONDRIA, because its main function it to produce energy for cellular activities.
Mitochondria is the host of cellular respiration. This is where the Mitochondria take in glucose and oxygen to produce energy and is distributed all throughout the body as energy-rich molecules of ATP.
Based on the marginal propensity to save, MPS , the national income will increase by a maximum of $20 billion.
<h3>What is marginal propensity to save?</h3>
Marginal propensity to save (MPS) is a measure of how savings will change, given a change in income.
Marginal propensity to save is related to marginal propensity to consume, MPC by the formula:
Grom the given value of MPS,
MPC = 1 - 0.25
Therefore, MPC = 0.75
Also, the formula for calculating marginal propensity to consume is given as:
- Marginal propensity, MPC = ΔC/ΔY
Where:
- ΔC is a change in consumption
- ΔY is a change in income
ΔY = ΔC/MPC
ΔY = $15 billion/0.75
ΔY = $20 billion
Therefore, the national income will increase by a maximum of $20 billion.
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