Chapter 3 (3.2 : Heart) Flashcards
Human’s blood respiratory system consists organs which allows _____, _____, _____, _____, _____ and other to travel to the body cells from the heart.
1.oxygen
2.nutrient
3.waste products
4.carbon dioxide
5.hormone
What is the human blood circulatory system called?
Close complete double circulatory system
Definition of close
Blood is separated from interstitial fluid
Definition of complete
Oxygenated blood and deoxygenated blood are separated
Definition of double
Blood flows twice through the heart to complete a cycle
What are the two types of circulatory system is divided into?
-Pulmonary circuit
-Systemic circuit
Definition of pulmonary circuit
Blood flows from the heart to the lungs then back to the heart
Definition of systemic circuit
Blood flows from the heart to other parts of the body then back to the heart
What is the 4 chambers in the heart of a human?
-2 atriums
-2 ventricles
Definition of atriums
Chambers that receive blood from the body part
Definition of ventricles
Chambers that pump blood to the body
The human blood circulatory system is divided into 4 category, which are?
-Heart chambers
-Blood vessels
-Valves
-Heart structure
What are the heart chambers divided into?
-Right atrium
-Right ventricle
-Left atrium
-Left ventricle
What is the function of right atrium?
-Receive deoxygenated blood from the body
-Pump blood to right ventricles
What is the function of left atrium?
-Receive oxygenated blood from the lungs
-Pump blood to left ventricle
What is the function of right ventricle?
-Receive deoxygenated blood form the lungs
-Pump blood to the lungs
What is the function of left ventricle?
-Receive oxygenated blood from the left ventricle
-Pump blood to throughout the body
What are the blood vessels divided into?
-Vena cava
-Aorta
-Pulmonary artery
-Pulmonary vein
What is the function of vena cava?
Carries deoxygenated blood from the heart to the body
What is the function of aorta?
Carries oxygenated blood from the heart to the body
What is the function of pulmonary artery?
Carries deoxygenated blood from the right ventricle to the lungs
What is the function of pulmonary vein?
Carries oxygenated blood from the lungs to the left atrium
What are the valves divided into?
-Tricuspid valves
-Bicuspid valves
-Semilunar valves (Pulmonary valve and aortic valve)
What is the function of tricuspid valves?
Prevents the back flowing of blood from the right ventricle right atrium
What is the function of bicuspid valves?
Prevents back flow of blood from the left ventricle to the left atrium
What is the function of semilunar valves?
Prevents the back flow of blood from the artery to the ventricle
What is the function of septum?
Prevent the mixing of oxygenated blood and deoxygenated blood
What are the characteristics of heart?
1.Blood from the body flows into the right atrium while blood from the lungs flows into the left atrium.
2.Both atria contract and push blood through valves into the ventricle.
3.Both ventricles contract and force the blood into pulmonary artery and aorta. The tricuspid and bicuspid valves are closed to prevent blood from flowing back into the atria.
Why human heart is efficient?
-Has valves
-Buildup of cardiac muscle that are able to contract and relax rhythmically
-Septum to seperate the ventricles (to prevent mixing of oxygenated blood and deoxygenated blood)
-Thickness of chamber walls
-Ventricles have a thicker wall to produce stronger pump
-Left ventricle has a thicker wall than right ventricle (left ventricle pumps blood to the whole body while right ventricle pumps blood to the lungs only)
