Circulatory system
These vessels carry blood away from the heart.
What are arteries?
Digestion begins in this organ.
What is the mouth?
This muscle helps control breathing by moving up and down to allow air in and out of the lungs.
What is the diaphragm?
These organs remove waste and extra water from the blood.
What are the kidneys?
These two systems work together to deliver oxygen to cells.
What are the circulatory and respiratory systems?
These structures keep blood flowing in one direction through the heart by preventing backflow.
What are valves?
This acid in the stomach helps break down food.
What is hydrochloric acid?
These structures warm, moisten, and filter incoming air before it reaches the lungs.
What are nasal cavities?
Urine moves through these tubes on its way to the bladder.
What are ureters?
These two systems work together to absorb nutrients and transport them throughout the body.
What are the digestive and circulatory systems?
This blood vessel carries oxygen-rich blood from the lungs to the heart.
What is the pulmonary vein?
Most nutrient absorption happens here.
What is the small intestine?
These tiny air sacs are the primary site of gas exchange in the lungs.
What are alveoli?
This is a major function of the kidneys involving the control of water, electrolytes, acids, and bases in the body.
What is homeostasis?
The urinary system helps the circulatory system by regulating this.
What is blood volume/water balance?
This part of the nervous system increases heart rate during stress or exercise
What is the sympathetic nervous system?
Acid reflux can occur when the sphincter does not close properly, allowing stomach acid to move into the esophagus.
What is the lower esophageal sphincter?
This gas is transported from body tissues to the lungs to be exhaled.
What is carbon dioxide?
When the kidneys fail, this nitrogen-containing waste can build up in the bloodstream.
What is urea?
During exercise, these two systems increase activity to provide muscles with more oxygen and remove excess carbon dioxide.
What are the circulatory and respiratory systems?
What receptors sense the levels of pH and carbon dioxide in the blood?
What are chemoreceptors?
If the villi are damaged, this process becomes difficult.
What is nutrient absorption?
This effect causes hemoglobin to release more oxygen to tissues when carbon dioxide levels increase and blood pH decreases.
What is the Bohr effect?
This hormone system helps regulate blood pressure and fluid balance when blood pressure drops.
What is the RAAS (renin-angiotensin-aldosterone system)
A person with kidney failure may develop high blood pressure because this body system can no longer properly regulate fluid levels.
What is the urinary system?