what do valves do?

stops blood from going backwards

what do valves do?

stops blood from going backwards

which node is the one that starts heart/ the fastest( pace maker) ?

the sa node

the sa node sends and impulse to which nodes to contract?

the RA and LA nodes

which node picks up impulse and sends it through the bundle of his to the RV and LV to contract?

the AV node

how many times does a healthy heart beat per minute?

60 to 80 times

how many times does the heart. beat per day?

100,000 times

how many gallons does the heart pump per minute?

1.5

how many miles of blood vessels?

60,000

what do arteries do?

take blood away from the heart with oxygenated blood

what do veins do?

take blood to the heart with deoxygenated blood

what are the two largest arteries?

aorta and pulmonary

air comes through the ( ) down to the ( )

nose-trachea

( ) is attached to the ( ) through the ( )

trachea-lungs-bronchus

what does the pulmonary artery do?

takes blood to the lungs

when blood enters the lungs it gos through a process called

diffusion gradient

atherosclerosis

slow progressive build up of fatty plaque on th inside of the arteries

vulnerable plaque

special form of plaque that ruptures and causes clots and blockages

thrombosis

clot that forms and blocks the artery

embolism

clot or other material that breaks loose and travels causing blockage in another area

occlusion

formal name for a blockage

ateriosclerosis

hardening of the arteries losing elasticity

anina pectoris

pain in the chest that mimes a heart attack, warning that oxygen is not reaching the heart

myocardial infarction

technical name for a heart attack

congenital

hereditary heart issues

stroke

3rd leading cause of death and lack of blood to the brain

aneurysm

causes strokes-weak spot in the artery MSC

CMS

coronary microvascular syndrome

unalterable risk factors?

hereditary factors

gender

age

ethnicity both in genetics and environment

alterable risk factors?

anything else

hittites

notable for ironworking

Phoenicians

maritime and merchant culture - inventors of the alphabet

assyrians

conquered Israel - terror tactics (ruthless) - decapatation/deportation of enemies - Jonah was sent to visit Assyria

Chaldeans (neo babalonians)

hanging gardens-ishtar gate

Lydians

first civilization to coin/standardize money - the Lydians fall because Croesis misinterpreted the oracle of Delphy

pershans

the largest - Cyrus allows to have own religion( reputation for mercy)