Circulatory System

function of the system.

The circulatory system is a body-wide network of blood, blood vessels, and lymph.


the relationship between the structure and function of arteries,capillaries and veins

function of veins-carry blood back to the heart

Structure of veins-walls are thinner then arteries, has valves that prevent back flow, veins have very low pressure

Structure of arteries-smooth inner layer, muscle tissue in middle, and outer wall flexible connective tissue; 3 layers

Function of arteries-carry blood away from the heart

Structure of capillaries-smooth inner layer, muscle tissue in middle, and outer wall flexible connective tissue; 3 layers

Function of capillaries-carry blood back to the heart

allow passage of nutrients and waste


diagram of the heart

the route of blood through the heart

bloods enters the heart through two large veins the inferior and superior

poor blood from the body the body into the rightt atrium of the heart


2 major disorders

Asthma

.Asthma can make breathing difficult and trigger coughing, wheezing, and shortness of breath.

.Cough,Respiratory

.Inhaled corticosteroids.


angina pectoris

.a condition marked by severe pain in the chest, often also spreading to the shoulders, arms, and neck, caused by an inadequate blood supply to the heart.

.chest pain.

.Normally this type of chest discomfort is relieved with rest, nitroglycerin or both.