Anatomy exam 3 crunch time

interatrial septum

wall that divides left and right atrium

Left Coronary Artery

Anterior interventricular branch and circumflex branch

Right coronary artery

Posterior interventricular branch and marginal branch

Purkinje fibers

at apex, superior within myocardium of outerventriular walls

ductus arteriosus

connects pulm trunk to aorta

foramen ovale

flap in atrium septa blood flow RA to LA

what causes foramen ovale and ductus arteriosis to close?

1st breath

fossa ovalis

depression in atrial wall used to be foramen ovale

ligamentum arteriosis

after 1st breath closed ligament connects pulm trunk to aorta

blood is?

liquid CT

3 gen func of blood

transportation, regulation, protection

bright red

high oxy content

dark red

low oxy content

Avg amount of blood

women 4-5 L men 5-6 L

Blood concentration

55% plasma 45% formed elements

Plasma

90% water and 10% proteins and disolved subs

hematocrit

total RBC about 35%

erythrocytes

RBC’s disc like non nuc no organelles

each protein hemoglobin can hold

4 iron ions

leukocytes

about 10% has nuc and organelles gran (BEN) and agran

basophils

many dark grans, allergic reactions 0.5-1%

Eosinphils

pac man, redish parasite killer & inflam response 2-4%

Neutrophils

2-5 lobed nuc, phag bacteria 50-70%

Agranular WBC

can’t see granules, lymph and monocytes

lymphocytes

small dark nuc, immune response create antibodies 20-30%

monocytes

largest, kindey bean shape, macrophages (eat in tissues) 2-8%