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Exam 3
| Question | Answer |
|---|---|
| Where is blood pressure the highest? | right outside left ventricle, aorta highest bp, |
| Where is it the lowest? | lowest at entrance of right atrium |
| What is the term for a disease-causing agent? | pathogen |
| What is the main job of the immune system? | Recognizing self from non self |
| What pumps lymph through the lymphatic circulation? | No pump all same thing that hlps venous blood return to the heart |
| What is the result of blocking drainage of lymph from tissues? | Lymphedema |
| In what area do T cells mature? | Thymus gland |
| What is the type of immunity mediated by T-cells? | Cell mediated immunity |
| What type of protein binds to antibody? | Antigen binds antibody mostly protein |
| In what direction does lymph flow? | From tissue back to heart from tissue duct |
| How would blockage of the thoracic duct affect the circulation of lymph? | You would block the movement of 3/4ths of lymph drainage in the body on the left side (thoracic) |
| Which cells are “overlooked” by the immune system? What are the number of these cells in the body? | At least half if not more in the cells are microbiota. Microbiota as many bacterial cells as human cells, at least half if not more |
| Non-specific defenses include | barriers like skin microbiota inflammation, cytokines, complements. No memory associated with non-specific |
| One of the four cardinal signs of the inflammatory response includes | heat, pain, redness, swelling |
| A vaccine gives what type of immunity? | Active artificial immunity |
| Where are class 1 MHC proteins found? | On every nucleated cell in the body |
| What type of cells line the tunica intima? | Endothelial cells |
| Which layer is thicker in arteries? | Tunica media |
| Which vessels are responsible for gas and nutrient exchange? | capillaries |
| What prevents backflow in veins? | valves |
| Relaxation of smooth muscles causes what change in vessel diameter? | increases diameter |
| Where are the largest vessels in the body located? | Just outside the heart |
| Capillaries flow into these vessels on the way back to the heart | venules |
| Higher blood viscosity leads to what change in vascular resistance? | Increase in vascular resistance |
| What do baroreceptor reflexes respond to? | Changes in pressure that are perceived as changes in the tension in vessel wall |
| What peripheral response helps maintain blood volume in the arterial system during a hemorrhage | vasoconstriction |
| Which vessels drain tissue fluid out of tissues? | Interstitial fluid, lymphatic vessels |
| How does the tunica externa get its blood supply in large vessels? | vaso vasorum |
| What is angiogenesis? | the growth of new blood vessels |
| At rest, most of the blood in the body is contained in which part of the circulatory system | venous system |
| What is the effect of constricting a vessel on blood pressure? | increases pressure |
| What is the velocity of blood flow in capillaries compared to other parts of the circulatory system | slowest |
| What main artery supplies blood to the legs? | femoral |
| What artery supplies blood to the brain? | internal carotid arteries |
| After flowing through the digestive system, blood is filtered through what organ before returning to the heart | liver |
| Plaque formation usually starts with what event? | injury to the tunica intima in arteries |
| in which vessels do you see plaque formation | arteries |
| Why are baroreceptors ineffective in controlling chronic high blood pressure? | Because they adapt too quickly |
| What are some causes of hypovolemic shock? | Hemorrhage and systemic anaphylaxis ( severe allergic reaction |
| How does osmotic pressure change as you travel through a capillary bed? how about hydrostatic pressure | osmotic pressure does not change. hydrostatic pressure decreases |
| What does it mean in terms of work expended for BP to be above or below 120/80 mmHg | The heart is working harder to move the same amount of blood |
| 140/90 | threshold for chronic blood pressure |
| How is energy of blood pressure lost during each circuit? | heat |
| Which type of resistance can be modified in a short period of time? | 1) Quickest is through vasoconstriction and vasodilation. 2) viscosity |
| What are some effects of systemic histamine release? | increases blood vessel, permeability, bronchoconstriction, vasodilation |
| Name some effects of antibody-antigen complexes | neutralization, agglutination, precipitation, complement activation |
| Why is a secondary immune response much faster than a primary response? | memory cells |
| How long does it take for antibody titer to peak with a naïve response? | two weeks |
| Where are complement proteins found? what results from their organization on a cell membrate | 1) in the blood streams 2) they make a drill like structure (membrane attacks complex) |
| thrombus | problems with arteries |
| 70% dark chocolate | 2 hours of digestion could walk further also good with stress |
| 70% of blood | is in systematic system while at rust |
| what usually require tissue growth | cancer cels |
| what does not have MHC I | erythrocytes |
| antibody titer | concentration of the blood |
| IgG | makes up 75-85% of antibodies in blood. Can also cross through placenta |
| IgE | takes part in allergic reactions |
| pus | mostly dead neutrophil |
| scar tissue | lose original function of tissue |
| antibodies | always proteins |
| What is Edema | swelling |
| How is Edema corrected | epinephrine |