Body Systems Flashcards
Homeostasis
The body is able to regulate temperature in response to signals from the nervous system.
The human excretory system is made up of
kidneys
ureter
urinary bladder
urethra
The kidneys filter ____ and form ____, which is stored in the ____ until it is eliminated through the ____.
The kidneys filter blood and form urine, which is stored in the bladder until it is eliminated through the urethra
Digestion of food begins in the ____.
mouth
Food is masticated by ____and moistened by ____ secreted from the ____ ____.
Food is masticated by teeth and moistened by saliva secreted from the salivary glands.
____ in the saliva begin to digest ____ and ____. With the help of the ____, the resulting ____ is moved into the ____ by ____.
Enzymes in the saliva begin to digest starches and fats. With the help of the tongue, the resulting bolus is moved into the esophagus by swallowing.
The stomach has an extremely ____ environment where most of the ____ gets digested.
The stomach has an extremely acidic environment where most of the protein gets digested.
large intestine functions:
1) reabsorbs water from undigested food
2) stores waste until it is eliminated
Air enters the ____ ____ through the ____ ____,
then passes through the ____ and the ____ into the ____.
Air enters the respiratory system through the nasal cavity, then passes through the pharynx and the trachea into the lungs.
Mucociliary escalator
specialized, ciliated cells that move mucus out of the respiratory tract
The heart is divided into:
Four chambers:
2 atria
2 ventricles
Each chamber of the heart is separated by
one-way valves
The right side of the heart…
The right side of the heart receives deoxygenated blood from the body and pumps it to the lungs.
The left side of the heart…
pumps blood to the body
(other than lungs)
The arteries of the body start at the ____ ____ and branch to supply the ____ and ____ of the body with ____ ____.
The arteries of the body start at the aortic arch and branch to supply the organs and muscles of the body with oxygenated blood.
The veins of the body…
The veins of the body carry deoxygenated blood from the body to the heart.
____ transport oxygenated blood back to the heart from the lungs.
Pulmonary veins
____ move deoxygenated blood from the heart to the lungs.
Pulmonary arteries