Biology Circulatory System

what is the transportation of oxygen

moves oxygen to cells and removes carbon dioxide.

what are the functions of the circulatory system

transports oxygen and carbon dioxide, moves nutrients to cells, removes waste, distributes hormones, regulates temperature, and protects the body from infection.

what are the three main components of the circulatory system

The heart, blood vessels, and blood.

what does oxygen carry

red blood cells.

Atheroscerosis

Plaque buildup in arteries

Hypertenstion

High blood pressure

Heart attack

Blockage of coronary arteries

Stroke

Interruption of blood to the brain

what does “FAST” mean

face droop, arm weakness, speech difficulty, time to call 911.

what is a ischemic stroke

blockage in a blood vessel that stops blood from reaching part of the brain.

what is a hemorrhagic stroke

a burst in a blood vessel in the brain.

what does the “P” on an electrocardiogram mean

atria contracting

what does “QRS” on an electrocardiogram mean

ventricles contracting, repolarization of atria

what does the “T” on an electrocardiogram mean

repolarization of ventricles

systolic

heart contracts

diastolic

heart relaxes

hypotension

low blood pressure

Arteries

carry blood away from the heart.

veins

carry blood towards the heart, cannot contract.

vasodilation

the widening of the blood vessel

vasoconstriction

the narrowing of the blood vessels.

erythrocyte

red blood cells

leukocyte

white blood cells

Platelets

Tiny cell fragments in blood that help with clotting

Plasma

liquid portion of blood yellowish colour

capillaries

allow substances to pass through

blood pressure numbers

120 over 80, 115 over 75, 140 over 100, and 90 over 65

adults blood pressure

120 over 80

teen blood pressure

115 over 75

high blood pressure

140 over 100

low blood pressure

90 over 65