The septum completely separates the two halves of the mammalian heart. Because of this The blood flows more slowly а. b. The blood flows faster The heart is able to hold a larger volume of С. blood d Oxygenated blood and deoxygenated blood are kept separate

If somebody was doping on EPO and you analyzed a sample of their blood you would likely find: A. higher than normal percentage of plasma B. A higher than normal percentage of circulating reticulocytes C. lower than normal amount of blood viscosity. D. increased chance of anemia

Myocardial infarction, or a heart attack, results if there is a lack of oxygen and nutrients brought to the heart tissue. A heart attack would result due to a blockage by arteriosclerosis of the а. coronary veins b. coronary arteries С. c. pulmonary veins d. pulmonary arteries

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ALS cause degeneration of motor nerves which control voluntary muscle movement. Which of the following would most likely be affected in a person suffering from ALS? Select one: a. peristalsis in the small intestine. b. heart output O c. vasoconstriction of arterioles O d. respiration rate

22. All of the followings are correct, except--------------------------------. A. Pulmonary circuit of birds & mammals is maintained at much lower pressures than systemic circulation B. Bird embryos have mechanism to shunt of blood from one circuit to the other C. Mammals fetus has the same pressure on both sides of the heart D. In amphibians, the blood vessels draining the left and right ventricles have an interconnecting aperture E. In some fish species that have air breathing organ, the gills remain partly functional

why is the 4 chamber heart of human more effcient than the 2 chamber heart of a fish  a. in a 2 chamber heart very little pressure is fromed in the ventricle  b. in a 4 chamber heart blood is fully oxygented before it is pumped thoughtout body  c. in a 3 chamber heart the artium is less effecient at receviewing the incoming oxygen blood  d. in a 4 chamber heart fully oxygented blood in a pumped out to the lungs and its pumping again out to the body .    when you taking blood pressure one collapase the branchial artery and the reduce pressure in the cuff . As blood to flow again one writers down that pressure which represent  a. systolic pressure  b. aortic pressure  c. disatolic pressure  d. vavle pressure    cardic output depend on what two factor  a. stroke volume and stroke power  b. cardiac rate and cardic rhythm  c, cardiac rate and stroke voulme  d. blood density blood volume

Interactions between the cardiovascular and respiratory system provide oxygen to the body.a.    Describe the path of blood through the heart, including arteries and veins. Start at the blood entering the heart from the body. Indicate when blood is oxygenated and deoxygenated.b.    Oxygen is transported by hemoglobin. Describe how pH affects the deposition of oxygen in tissues c.    What are two sources of oxygen stores in the body to allow for rapid use when undergoing physical exertion? d.    Which chamber of the heart is the most muscular, and why?

27. All of the followings are incorrect about adult human heart, except ---------------------. A. There is a lower systemic than pulmonary arterial blood pressure B. There are four chambers in the heart C. The right atrium receives blood directly from pulmonary veins D. In adults, right atrium is connected to the left atrium by the foramen ovale E. The right atrium is electrically coupled to the right ventricle by the SA node

O2 bound to hemoglobin:   a. acts the same as physically dissolved oxygen   b. Comes off the hemoglobin (dissociates) more easily as you increase the oxygen partial pressure   c. exerts a partial pressure    d. Comes off the hemoglobin (dissociates) more easily as you increase the acidity (decrease the pH)   e. all the options are correct   2. Air convection in mammals is driven by a smaller pressure gradient than blood convection because:   a. Bronchioles have a greater resistance to flow than arterioles   b. bronchioles tend to have a smaller radius than arterioles and capillaries   c. air is easier to move with pressure gradients than blood    d. air generally travels farther in your body than does blood   e. air is heavier than blood 3. The rate of diffusion of gases is NOT determined by which of the following?   a. The area of the surface across which diffusion is occurring    b. The mechanical energy…