Health Ch 11

restoration of normal heart rhythm by electrical shock

shorten, reduce in size

pertaining to the heart; coronary arteries supply blood to the heart muscle

dilation of the heart; resting phase or filling of the ventricles, alternating with systole

area of tissue death (necrosis) caused by loss of O2 (ischemia) as a result of obstruction of circulation to the area

carrying venous blood from R ventricle to lungs & returning oxygenated blood to the L atrium

expression of speed/ frequency of an event in relation to a specified amt. of time, # of contractions of the heart per minute

measured movement, recurrence of an action or function at regulat intervals, interval of heart contractins

narrowing/ stricture of a duct/canal

instrument used to listen to body sounds (auscultation)

• general circulation:
• carrying O2nated blood from L ventricle to tissues of body & returning venous blood to R atrium

• filling of atria & contraction of ventridcles
• alternating w/diastole

any 1 of the many tubules in the body that carry fluid

• transports nutrients & O2
• transports waste products from cells to kidney fro excretion
• distributes hormones & antibodies
• controls body temperature & maintain electrolyte balance

• top 2 chambers
• blood enters heart through atria

• lower 2 chambers
• blood leaves heart through ventricles

• divides R & L sides of heart
• if there's a hole, blood will mix

R side pumps deO2 blood to lungs

L side pumps O2ated blood to rest of body

• path of blood from intestines, gall bladder, pancreas, stomach, & spleen through liver
• blood returns to R side of heart from body to complete cycle

seperates atria & ventricles

seperates ventricles from pulmonary artery & aorta

superior/ inferior vena cava > R atrium > tricuspid valve > R ventricle > pulmonary semilunar valve > pulmonary artery > lu|ng > pulmonary vein > L atrium > bicuspid mitral valve > L ventricle > aortic semilunar valve > aorta > body

smooth layers of cells lining inside of heart and forms valves

thickest layer consisting of muscle tissue

• double membrane covers outside of the heart
• provides lubrication between heart & surrounding structures to prevent tissue damage

• in R atrium
• starts heart

• sends impulse into lower portions of heart AV bundle/ bundle of HIS
• stimulates Purkinje fibers

causes ventricles to contract

• carry blood away from heart
• blood is O2ated
• have muscular layer of tissue that pumps blood out of body

largest artery in body, which branches into smaller arteries

• smaller vessels
• blood moves from arterioles to capillaries

• microscopic vessels carry blood between arterial & venous vessels
• gases, waste, & nutrients exchanged
• bloog gives up O2

• surge of blood against the walls of arteries
• 8 pulse points
• 60-90 beats per min = normal for adults

force of blood against walls of arteries

• abnormal/extra sound classified by timing, intensity, location, pitch, & quality
• may be benign/indicate a disorder

• vibration felt by touch over an artery
• caused by abnormal flow of blood

• measures graphically the pattern of electrical activity in heart contractions
• all heart activites have characteristic wave pattern

• uses ultrasonic waves to show structures & motions
• transducer plots sound echoes to produce a graphic picture

• used to measure pressure in chambers to take blood samples & to view obstructions in vessels
• a tube is inserted through blood vessels into heart
• dye is then released & traced using xray

area of a blood vessel bulges because of a weakness on the wall

narrowing blood vessels caused by deposits of fatty material containing calcium & cholesterol

disturbance of heart rhythm caused by defect in heat's pacemaker cells or damaged heart tissue

general term for arteriosclerosis, atherosclerosis, & related conditions called "coronary artery disease"

group of disorders affect ab. 25,000 newborns each year in US

inability to pump blood to meet body's needs

high blood pressure

aka heart attack

inflammed vein often with formation of a clot

• heart muscle & valves are damaged by a recurrent bacterial infection
• usually begins in throat

veins become enlarged and ineffective

• 1967
• approx. 2,300 heart transplants each year in US

• Jarvik, 7
• connected to an external power source & pump

• 2001
• designed to test how long it would extend life for people w/end stage heart failure

• 2005
• approved use of Syn Cardia CardioWest Temporary Total Artificial Heart used in patients w/irreversible failure of the ventricles

• LDL (low density lipoprotein) vs HDL (high density lipoprotein)
• type of fat in diet, not the amount, changes cholesterol level
• limit intake of saturated fats & eliminate trans fats

• solid/semi solid @ room temperature
• worst kind of fat
• margarines, vegetable oils, shortening, deep-fried, & most fast foods