Circulatory system Flashcards
2 systems of the circulatory system
cardiovascular and lymphatic system
what kind of system is the circulatory system
closed system
lymphatic fluid vs interstitial fluid
lymphatic is contaminated and interstitial is clean
3 functions of the cardiovascular system
- gas exchange of CO2
- supplies nutrients absorbed from the digestive tract
- defense against bacteria with WBC
- removes waste like CO2
4 chambers of heart
right atrium, right ventricle
left atrium, left ventricle
2 types of circulation
pulmonary (right atrium to left atrium) and systemic (left atrium to right atrium)
valves of heart
tricuspid valve (right atria from right ventricle)
mitral valve (left atria from left ventricle)
pulmonary valve (right ventricle from pulmonary trunk)
aortic valve (left ventricle from aortic arch)
pulmonary circulation
where gas exchange takes place in the capillaries of the lungs, allowing for waste CO2 to be released into the lungs and breathed in O2
heart layers
pericardial sac
- visceral layer
- serous space w/ serous fluid
- parietal layer
- fibrous pericardium (outermost)
heart
- epicardium
- myocardium
- endocardium (lined with trabeculae)
what lines the atria
pectinate muscle
what attaches to cusps
chordae tendinae
what attaches to chordae tendinae
papillary muscles with attaches to trabeculae of endocardium
what covers both atria
oracles
major arteries of heart
right and left coronary and circumflex artery
what causes prolapsed mitral valve
a build-up in arteries or typically older patients with atherosclerosis
fetal circulation
placenta supplies oxygen, nutrients, etc. and goes to umbilical vein which goes past liver, and attached to inferior vena cava (ductus vinosus)
fetal circulation
placenta supplies oxygen, nutrients, etc. and goes to umbilical vein which goes past liver, and attached to inferior vena cava aka (ductus venosus)
blood enter fetus through…
inferior vena cava and right atrium
foramen ovale
connects right atrium to left atrium allowing blood to bypass
ductus arteriosus
connects pulmonary to aortic
ductus arteriosum
connects pulmonary to aortic
fossa ovalous
foramen ovale after childbirth
ductus arteriosus becomes what after birth
ligamentum arteriosum
ductus venosus
connects umbilical vein to inferior vena cave
ventricular septal defect
a hole that connects both left and right ventricles allowing blood flow
