Test 3 Flashcards
(23 cards)
Types of blood vessels?
Arteries, capillaries, veins
Arteries are responsible for?
carrying blood Away from the heart, largest artery is the Aorta, smallest is Arterioles.
Capillaries are responsible for?
Connect arteries & bones; tiny,
Veins are responsible for?
Bring blood to the heart; inferior vena cava & venules (smallest)
The heart is made of?
Muscle
where is the heart located?
behind the sternum & rib cage
what is myocardian?
muscle in the wall
what is the cardiac cycle?
Heart beat; when the heart contracts “Systole”; relaxation of the heart is “Diastole”
what is the average resting heart rate?
60-80 bpm
ECG means?
electro cardio gram
what does a ECG do?
recording of electrical changes that occur in the myocardium during a cardiac cycle; used to detect abnormalities
Pulmonary system is what?
(lungs) circulates blood through lungs
Systemic system is what?
circulates through all other tissues
Coronary Arteries do what?
supply blood to the heart; small/ clogged easily
what is blood pressure?
pressure of blood against blood vessel wall; systolic/diastolic 120/80
what exactly is fainting?
lack of blood to brain
blood is what?
blood is the only liquid tissue in the body that settles in 2 layers
what are the formed elements of blood?
red blood cells (erythrocytes), white blood cells (leukocytes), and platelets (thrombocytes), 45% lower layer
Plasma is made of what?
mostly water
functions of blood are what?
1) transport oxygen & nutrients to cells; carbon dioxide & waste to exit; regulation - blood pressure, PH, Temperature, Protection against disease
RBC shape?
biconcave disc
what is Anemia?
(low iron), not enough blood cells; not enough hemoglobin
