Flashcards in Chapter 6 - the heart and lungs at work Deck (78)
what is considered the most popular cardiovascular exercise?
what are the 4 primary roles of the cardiovascular system?
1) to transport oxygen from the lungs to the heart
2) to transport carbon dioxide from the tissues to the lungs
3) to transport nutrients from the digestive system to other areas in the body
4) to transport products from sites of production to sites of exercise
what are the 2 components to measure blood pressure?
used to decribe the pressure in the heart when the ventricles are relaxed and are being filled with blood. indicator of peripheral blood pressure (the blood pressure in the body outside the heart)
the pressure in the ventricles when they are contracting and pushing blood out into the body
what is the normal range of pressure in the atria during diastole?
what is the normal range of pressure in the atria during systole?
what is the rest point called
the further from the heart, the lower the pressure. is this true or false?
what 2 items does a doctor use to take a patient's blood pressure?
sphygmomanometer and stethoscope
blood pressure is too high - increases pressure going into the brain
problems with low blood pressure below 100 systolic
not enough blood going to brain
the amount of blood pumped out of the left ventricle each time the heart beats
what is stroke volume measured in?
what is a typical stroke volume for a normal heart?
about 70 milliliters of blood per beat
what are the 2 ways to take heart rate?
with fingers on the wrist (radial) and with fingers on the neck (carotid)
the number of times the heart beats in one minute, measured in beats per minute (bpm)
what are the contraction of the walls of the heart commonly known as?
the heart beat
what range can the resting heart rate of an adult be from?
40bpm in a highly trained athlete to 70bpm in a normal person
during intense exercise, the heart rate may increase up to ____ bpm
what is the maximum heart rate?
vessels that carry blood away from the heart are called ____
arteries branch into smaller and smaller vessels called _______
the arterioles branch into even smaller vessels called ______
peripheral nervous system
between heart and lungs
allow for the exchange of oxygen and nutrients from the blood to the muscles and organs and allow blood to pick up the waste products and carbon dioxide from metabolism
as the blood begins to return to the heart, the capillaries connect to from larger and larger vessels called ______
the venules then merge into larger vessels that return blood to the heart called ____
the skeletal muscle pump
blood that flows towards the heart opens the valves and blood that flows away from the heart closes the valves