1) When we exercise, oxygen and what else are transported to the working muscles? a) mitochondria b) haemoglobin c) lactic acid d) water 2) The pulmonary circuit carries.... a) deoxygenated blood from lungs to heart b) oxygenated blood from heart to lungs c) deoxygenated blood from heart to lungs d) oxygenated blood from lungs to heart 3) Deoxygenated blood is transported from the right ventricle to the lungs, through what? a) pulmonary artery b) superior vena cava c) pulmonary vein d) aorta 4) Which term best describes stroke volume? a) the volume of blood pumped out of the heart in one minute b) the volume of blood pumped out of the heart during one contraction c) the volume of blood pumped out of the heart after all exercise d) the volume pumped out of the heart per hour 5) The fluid filled sac that surrounds the heart is called the... a) septum b) myocardium c) perocardium d) ventricle 6) When the heart beats, or 'contracts', this is known as what pahase? a) diastolic b) systolic 7) The upper chambers of the heart are called? a) Atria b) Veins c) Ventricles d) Valves 8) Compared to arteries, the walls of veins are what? a) thicker b) shorter c) thinner d) longer 9) Fill in the missing words: Haemoglobin is found in ..... blood cells, and transports ....to body tissue. a) red, oxygen b) white, oxygen c) red, carbon dioxide d) white, carbon dioxide 10) Regular exercise means the resting stroke volume and caridac output ...? a) decrease b) stay the same c) increase d) SV increases, CO decreases

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