circulatory system Flashcards
(35 cards)
what is used to separate components in blood
centrifuge
what does blood transport
o2, co2, nutrients, waste, immune factors, hormones, electrocytes
circulatory paths
systemic circulation - whole body
pulmonary circulation - lungs
thin, double layered sac
pericardium
T/F
space in pericardial sac = very small in UNHEALTHY anml
FALSE
- very small space = HEALTHY anml
cranial
head-related
caudal
tail-related
cranial vena cava
BRINGS blood from structures INFRONT of heart to heart
caudal vena cava
RETURNS blood from structures BEHIND heart to heart
why do ventricles have thicker muscular walls than atrium
b/c they pump blood
- left ventricle = thickest
what delivers blood to cardiac muscles
CORONARY arteries
carotid arteries
blood supply to head + brain
what supplies to gastrointestal tract
mesenteric arteries
what supplies blood to hind legs
iliac arteries
describe blood flow
- RV contracts -> blood to pulmonary arteries
- PA carry blood AWAY from heart to lungs
- blood w/o2 goes to larger venules
- venules meet/join veins
- veins to heart
- heart pump o2 blood to body
what is known as pacemaker
sinoatrial (SA) node
atrioventricular (AV) node does what
picks up signal from SA node
- allows atria to contract + empty b4 ventricular contraction
atrial fibrillation
SA node no longer works as pacemaker
- irregular HR + very rapid
- quivering
ventricular fibrillation
ventricles fire rly quickly
- leads to quivering
- classic arrhythmia - shock w/defibrillator
asystole means
tracing = flat line
- heart no longer contracts
a = no
systole = contracts
cpr stands for and used to
cardiopulmonary resuscitation
- stmulte heart to deliver o2 to lungs
what controls HR
autonomic nervous system (ANS)
hypo- means
when blood value = below normal
hypo = hippo = fat = doesn’t move = LOW energy
hyper- means
blood value = above normal
hyper = energetic
