Respiratory System
What gas do humans breathe in to help make ATP?
Oxygen
Gas exchange occurs by what process
Diffusion
Where does digestion begin?
Mouth
What organ produces bile?
Liver
What is the process of maintaining internal body temperature called?
Thermoregulation
What muscle beneath the lungs contracts during inspiration?
Diaphragm
Air that leaves the lungs is high in ______ and low in ______.
CO2 and O2
What enzyme in saliva begins carbohydrate digestion?
Salivary amylase
What organ stores bile?
Gallbladder
What kind of animal has a body fluid concentration that is the same as the surrounding water
Osmoconformer
Small branches within the lungs
Bronchioles
What process moves carbon dioxide from tissue cells into the blood?
Internal Respiration
What liquid is food turned into in the stomach?
Chyme
Most nutrients are absorbed here
Small Intestine
What are the two tubes called that carry urine from the kidneys to the bladder?
Ureters
What tiny air sacs are the site of gas exchange?
Alveoli
What protein in red blood cells carries oxygen?
Hemoglobin
What fingerlike projections in the small intestine increase surface area for absorption?
Villi
What yellowing of the skin and eyes can occur when bile backs up into the bloodstream?
Jaundice
_________ is the transfer of heat by the movement of air or liquid over a surface.
Convection
This organ passes from the larynx to the lungs
Trachea
CO2 is carried from the tissues to the lungs in a variety of ways: How is the majority of it carried
reacts with water to form bicarbonate
What muscular movement pushes food through the esophagus?
Peristalsis
Valve between the esophagus and the stomach.
Cardiac Sphincter
What nitrogenous waste is excreted by most mammals?
Urea