Question | Answer |
What is a minute artery? | Arteriole |
What vessels carry blood away from the heart? | Arteries |
What vessels carry blood to the heart? | Veins |
What are small veins called? | Venules |
What are the small blood vessels that connect arterioles & venules? | Capillaries |
What are the upper chambers of the heart called? | Atria |
What are the lower chambers of the heart called? | Ventricles |
One complete contraction & relaxation of the atria & ventricles is known as a ____. | Cardiac Cycle |
The amount of blood pumped per minute by the left ventricle. | Cardiac Output |
The muscle layer of the heart. | Myocardium |
The innermost layer of the heart. | Endocardium |
The outer sac that encloses the heart. | Pericardium |
The system of blood vessels that carries blood between the heart and lungs. | Pulmonary circulation |
The heartbeat that is felt at different points on the outside of the body. | Pulse |
Which side of the body is the apex of the heart pointed? | Left |
What allows blood to move between the atria and ventricles? | Valves |
The amount of blood pumped by a ventricle in a single contraction. | Stroke volume |
The contraction of the heart is known as _______________. | Systole |
The relaxation of the heart is known as _______________. | Diastole |
Closure of the ________________ produces the heart beat we hear. | Valves |
Squamous epithelial layer of artery and vein walls that reduces friction in the lining. | Tunic Intima |
Muslce layer of artery and vein walls that stretches and recoils. | Tunic Media |
Fibrous connective tissue that supports & protects arteries and veins. | Tunic Externa |
How thick are capillary walls? | 1 cell |
Which type of vessel has the thickest walls? | Arteries |
Normally arteries carry O2 rich blood and veins carry CO2 rich blood. Pulmonary arteries & veins are an exception to this rule. What is one other exception? | Umbilical vessels |
The vertebral arteries and what other arteries supply blood to the brain? | Internal carotids |
What is the communication between the arteries that supply blood to the brain? | Circle of Willis |
Which type of circulation has a capillary bed that is both fed and drained by veins? | Portal |
What is the vessel that bypasses the liver in fetal circulation? | Ductus Venosus |
There are 2 vessels that bypass the lungs in fetal circulation. One is the Ductus Arteriosis. What is the other? | Foramen Ovale. |
Which umbilical cord vessel carries O2 & nutrient rich blood? | Umbilical Vein |
Which artery is located in the wrist and is used for taking pulses? | Radial |
Which arteries are located lateral to the eyes? | Temporal |
Which arteries are located in the groin? | Femoral |
Which arteries are located in the back of the knee? | Popliteal |
What force maintains circulation throughout the entire body? | Blood pressure |
What is the most important function of the lymph vessels? | Collect excess fluid |
What kind of cells does the spleen destroy? | RBC’s |
What kind of cells does the spleen produce? | Lymphocytes |
What are veins that have twisted & dilated due to incompetent valves? | Varicose Veins |
What separates the right and left sides of the heart? | Septum |
Which chambers of the heart receive blood? | Atria |
Which chambers of the heart pump blood? | Ventricles |
What artery comes out of the left ventricle and supplies blood to all body tissues? | Aorta |
The left atrioventricular valve is also known as the ___________valve. | Bicuspid |
The right atrioventricular valve is also known as the ______________ valve. | Tricuspid |
What is the name of the tiny white cords that anchor the valves? | Chordae Tendineae |