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Science Systems Test
| Question | Answer |
|---|---|
| Which vessels carry blood to the heart? | Veins |
| Which vessels allow exchanges between blood and body cells? | Capillaries |
| Which vessels carry blood away from the heart? | Arteries |
| _______ is caused by the rhythmic change in blood pressure? | Pulse |
| What are the narrowest blood vessels? | Capillaries |
| What is the major vein that returns blood to the heart from the body? | Vena Cava |
| What is the largest artery? | Aorta |
| Where does the blood go when it leaves the lungs? | Back to the heart (left atrium) |
| Which chambers of the heart pump? | Ventricles |
| Which side of the heart is oxygen rich? | Left |
| Having a fatty build up in the blood vessels is called ________? | Atherosclerosis |
| Abnormally high blood pressure is called ____________? | Hypertension |
| Brain damage caused by damage to blood vessels is a ___________? | Stroke |
| Death of heart muscles is a ____________? | Heart attack |
| What is the definition of pulse? | Expansion and contraction of the arterial walls |
| What is the definition of blood pressure? | The force that blood exerts on the walls of the arteries |
| What gas is taken from the blood when it is pumped to the lungs? | Carbon dioxide |
| Which blood type is a universal donor? | Type O |
| What three things does the circulatory system do? | Protect the body from diseases and germs, protect the body from bacteria and viruses, and control body temperature |
| Movement of blood between lungs and the heart is _________? | Pulmonary circulation |
| What do valves do? | Help the blood go in the right direction |
| What are cylinders a good shape to use in the circulatory system? | It lets more air go at a time |
| What does the respiratory system do? | Delivers oxygen to all cells and removes carbon dioxide and waste |
| What is needed to release energy in the body? | Oxygen |
| Where does air first enter the respiratory system? | Nostrils |
| What is the common name for the trachea? | Windpipe |
| What is the scientific name for the voice box? | Larynx |
| What surrounds each alveolus? | Capillaries |
| Air is mostly composed of _________? | Nitrogen |
| What are the balloon-like structures in the lungs called? | Alveoli |
| What is the definition of lymphatic system? | A group of organs and tissues that collects excess fluid and returns it to the blood |
| What does the lymphatic system help fight? | Pathogens |
| What is the main gland of the lymphatic system? | Thymus |
| What is the largest lymphatic organ? | Spleen |
| Where are blood cells made? | Bone marrow |
| What do lymph nodes do? | Remove pathogens from lymph |
| A type of white blood cell that fights pathogens is a __________? | Lymphocyte |
| Pathogens are destroyed by a kind of lymphocyte called a ___________? | Killer T-cell |
| Alveolus? | Any of the tiny air sacs of the lungs where oxygen and carbon dioxide are exchanged |
| Bronchi? | One of the two tubes that connect to the lungs with the trachea |
| Diaphragm? | A dome-shaped muscle that is attached to the lower ribs and that functions as the main muscle in resparation |
| Epiglottis? | A flap of cartilage at the roof of the tongue which is depressed during swallowing to cover the opening of the windpipe |
| Larynx? | The area of the throat that contains the vocal cords and produces vocal sounds |
| Lung? | A respiratory organ in which oxygen from the air is exchanged with carbon dioxide from the blood |
| Nose? | The main passageway into and out of the respiratory system |
| Trachea? | The tube that connects the larynx to the lungs |
| Vocal cord? | A pair of elastic pair or elastic bands that stretch across the larynx |
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