a blood cell that fights disease.
White blood cells
the organic process by which food is converted into substances that can be absorbed into the body.
digestion
the process by which wastes are removed.
excretion
A pathway for oxygen to enter the lungs. Lined with hair and mucus to help filter larger particles from the air we breathe.
Nose
A process plants use to turn sunlight into food
photosynthesis
a cell in the blood that takes up oxygen in the lungs and delivers it to cells elsewhere in the body.
red blood cells
the process of absorbing nutrients into the body after digestion?
absorption
other organs of the excretory system that remove carbon dioxide, sweat, urea, and bile
lungs, skin, and liver
the open area behind the nose that is lined with cilia, mucus, and capillaries. This helps to filter, moisten, and warm the air we breathe.
Nasal Cavity
A gas that plants release during photosynthesis
oxygen
blood vessels that carry blood back to the heart?
veins
What system has these functions digestion, absorption, and elimination?
functions of the digestive system.
the major job of the excretory system?
to collect the waste produced by cells and remove them from the body.
An organ that allows oxygen to get to the blood and helps remove waste gasses such as carbon dioxide.
Lungs
an organism that cannot make its own food is called a?
heterotroph
the muscular organ that pumps blood throughout the body muscular organ that pumps blood throughout the body?
Heart
throat; passageway for food to the esophagus and air to the larynx
pharynx
Substances the excretory system eliminates from the body.
urea, water, carbon dioxide, and salt.
Sheet of muscle beneath the lungs that contracts and relaxes which changes the air pressure in the chest cavity to move gasses into and out of the lungs?
diaphragm
the green coloring in leaves and other green parts of a plant?
chlorophyll
each of the two lower chambers of the heart that pumps blood out of the heart
atrium
an enlarged and muscular saclike organ of the alimentary canal that carries food.
stomach
How do kidneys regulate water in the body?
The kidneys maintain homeostasis depending on the conditions inside the body.
Clusters of thin-walled sacs surrounded by capillaries allow for quick exchange of oxygen and carbon dioxide. (known as air sacs)
Alveoli
the process by which cells breakdown molecules to release energy without using oxygen?
fermentation