________ is expelled from a human when the diaphragm relaxes, causing the lungs to recoil and the waste gas to be pushed out.
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Oxygen
________ is needed by cells to make energy, while carbon dioxide is produced as the cells make energy and is later released as a waste product.
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Humans
________ excrete harmful nitrogenous waste as urea (changed in the liver)
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respiratory system
The ________ plays an important role in maintaining homeostasis.
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gas exchange process
The ________ helps humans create a balance.
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urinary system
The ________ regulates three substances in the human body.
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pelvis
The ________ goes to the ureter, which takes the urine to the bladder, where excretion will eventually occur, eliminating the sodium waste out of the body.
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Contraction of the diaphragm
________ causes chest volume to increase, while air pressure in the lungs decreases.
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human body systems
The diaphragms contractions and relaxations allow for air to rush in and out of the lungs. Explain how ________ maintain relatively constant internal conditions.
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pressure difference
The ________ causes air to rush into the lungs (oxygen)
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Water level
The urinary system regulates three substances in the human body. ________ is regulated, salt and ion levels in the blood are adjusted accordingly, and urea /other toxic wastes are excreted.
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Gills
________ maximize the concentration difference of oxygen between the blood in the capillaries and the water that passes over the ________.
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large amount of sodium first
The ________ enters the kidneys through the renal artery in unfiltered blood.
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Water
________ flows over gill disks front to back, while blood moves in the opposite direction of water.
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Sodium ions
________ are among the substances /nutrients that can be reabsorbed.
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large volume of gas
A(n) ________ can be exchanged with the bloodstream in a short amount of time because the many alveoli of the lungs provide a great surface area.
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rest of the sodium
The ________ is turned into waste products, which have remained in the Loop of Henle, passed through a tubule, then into collecting ducts.
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Carbon dioxide
________ diffuses out of the gills into the water, conversely.
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Oxygen
What is taken in with inspiration? Answer with a single words or term.
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Carbon dioxide
________ is the waste gas, removed with expiration.
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urinary system
The ________ plays an important role in maintaining homeostasis.
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