pace maker-capillaries Flashcards
where is a pacemaker
right atrium
other names for pacemaker
S-A node
Purkinge Fibers
Tachycardia
greater than 100 beats per min
brady cardia
less than 60 beats per minutes
job of pacemaker
regulate beat
average heart beat
72 bpm
hypertension
high blood pressure
hypotension
low blood pressure
2 blood pressures
systole and diastole
systole
systolic pressure. top #
pressure of ventricles pumping
diastole
diastolic pressure. bottom #. pressure of atrias pumping
what low blood pressure
less than 120/70
high blood pressure
over 120/70
what can affect bp
salt,mweight, smoking, lack of excercise, genetics
what is the danger of high bp
stroke
danger of low bp
tired, feint
where are arteries located
deep within the body
what kind of walls do arteries have
elastic
do arteries have valves
no
what kind of muscle do arteries contain
smooth
what blood vessels are used for blood pressure
arteries
mini arteries
arterioles
largest artery
aorta
where do arteries carry blood
away from the heart
what thins blood
asprin
pulse
alternating contractions/relaxations
Where do veins carry blood
against gravity to the heart
where are veins located
near the surface of the skin
what kind of walls do veins have
non elastic
mini veins
venules
do veins have valves
no
what are the largest veins
superior and inferior vena cava
where are capillaries located
next to every cell in the body
what kind of walls do capillaries have
one cell thick (thin)
what process do capillaries aid in
diffusion
diffusion
connects arteries and venules. CO2 and O2 diffuse
broken capillaries
bruise
