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7 Sci Unit B Exam

7th Grade Science Unit B

Name the parts of the respiratory system nose, trachea, bronchioles, lungs, alveoli and diaphragm
How does food travel through digestive system? From mouth > esophagus > stomach > small and large intestines
What is the liver responsible for? Removing toxins from the blood
What do the kidneys do? Remove metabolic wastes from the blood (breakdown of proteins and extra water)
What does your pulse do when you increase activity? Increases
What are the parts of the nervous system? Touch receptors, brain, motor neurons, sensory neurons and spinal chord
What is the digestive system responsible for? Absorption of nutreints
What is hepatitis? Disease of the liver
What is major function of respiratory system? Absorb Oxygen
What are the three wastes produced by the body? Carbon dioxide, urine and feces
What is your pulse? Number of heart beats per minute
How can you reduce resting heart rate? Exercise regularly
What is the hierarchy of organization for the human body? is the cells combine to make tissues, the tissues combine to make organs, the organs combine to make systems, and systems combine to make organisms
What must occur in order for food to be absorbed as nurtients? Mechanical and chemical breakdown.
What three major body systems are negatively impacted by alcohol consumption? excretory, circulatory, and nervous systems
What does alcohol do to brain? Depresses the part of the brain that controls behavior
What usually causes a heart attack? Coronary arteries are blocked
What is one of the main functions of capillaries? Carry oxygen to every cell of the body
What does blood transport throughout the body? Heat, Oxygen, Carbon Dioxide and Nutrients
The hearts beating is responsible for..... moving blood around the body
The heart could be modeled by.. using a pump
Blood from the heart may... enter lungs or go to body
The heart is both a.... muscle and an organ
Are taste buds part of the digestive system? No
What are teeth responsible for? Major portion of mechanical breakdown of food
Where does chemical breakdown of food mostly occur? Stomach and small intestine
Mechanical breakdown of food.... increases speed of chemical breakdown
Nutrients are transported by what to every cell in the body blood
An important function of what system is to transports nutrients to every cell in the body? Circulatory
What makes the sound in the heart? Closing of the valves
What are two common procedures to treat blocked coronary arteries? Bypass surgery and angioplasty
What are some factors of heart disease? Smoking, high calorie diet, lack of execise
What do valves do? Prevent the backflow of blood in the heart and veins.
What system is responsible for the transport of nutrients, oxygen co2 and metabolic wastes throughout the body? circulatory
Describe where the circulation of blood begins and ends. right atrium, through the tricuspid valve > right ventricle >another valve to pulmonary arteries> lungs. from lungs via the pulmonary veins to left atrium >a valve into left ventricle > aorta >body.>superior/inferior vena cava back to right atrium
Created by: isaakray



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