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level: Science

Questions and Answers List

level questions: Science

Question	Answer
is a group of organs and tissues working together to enable us to breathe.	Respiratory System
where the air first enters our body.	Nose
it is a chamber where the passages from the nose and mouth meet.	Pharynx (throath)
a muscular organ between the pharynx and trachea.	Larynx (voice box)
the main passageway from larynx to the lungs.	Trachea
are two air tubes that branch off of the trachea and carry directly to the lungs.	Bronchial Tubes
the main organ of the respiratory system.	Lungs
tiny round air sacs	Alveoli
deliver blood rich in carbon dioxide to the capillaries that surround the air sacs.	Pulmonary Artery
where the oxygen-rich blood travels to the heart.	Pulmonary Veins
a dome-shaped muscle at the bottom of the lungs.	Diaphragm
a red blood cell protein	Hemoglobin
give the 6 functions of respiratory system	- supplying oxygen to our body. - filters inspired air. - produces sound. - contains receptors for smell. - rids the heat and some exes water of the body. -helps regulate blood pH.
exchange of gasses between our body and the environment.	External Respiration
bringing oxygen in our cells and removing carbon dioxide.	Internal Respiration
main site of gas exchange	Alveoli
the process by which materials move from a region of high to a region of low concentration.	Diffusion
is a vast network of organs and vessels that is responsible for the flow of blood, nutrients, etc., to billions of body cells. also known as "cardiovascular system".	Circulatory System
three (3) independent systems that work together in circulatory system.	- Cardiovascular (heart) - Pulmonary (lungs) - Systemic (arteries, veins, coronary, portal vessels)
the pumping organ of circulatory system.	Heart
is a tissue consisting of blood cells suspended in a liquid solution.	Blood
what makes up the circulatory system?	The heart, blood, and blood vessels
what are the four chambers in our heart?	Right Ventricle and Atrium, Left Ventricle and Atrium
what is the receiving chambers?	Atria or Atrium
what are the discharging chambers or the actual pump of the heart?	Ventricles
responsible for carrying oxygen and carbon dioxide.	Red Blood Cells
helps the body to fight off germs; they attack and destroy germs.	White Blood Cells
they are blood cells that help stop bleeding.	Platelets
small tubes that carry blood to different parts of a person's body.	Blood Vessels
the largest artery	Aorta
blood vessels that cary oxygenated blood away from the heart.	Arteries
thinner blood vessels that carry deoxygenated blood back toward our heart.	Veins
tiny blood vessels as thin or thinner than the hairs n our head.	Capillaries
largest vein in our body.	Superior Vena Cava
Blood Transport	1. Superior and Inferior Vena Cava 9. Mitral Valve 2. Right Atrium 10. Left Ventricle 3. Tricuspid Valve 11. Aorta 4. Right Ventricle 5. Pulmonary Artery 6. Lungs 7. Pulmonary Veins 8. Left Atrium