Abeka Health Grade 9 Section 2.1

Cardiorespiratory endurance

The ability of the heart, lungs, and blood vessels to distribute nutrients and oxygen to and remove wastes from the body's tissues during extended periods of vigorous activity

Cardiology

The study of the heart and the body's network of blood vessels and their functions

Cardiovascular system

The heart, arteries, veins, capillaries, and the blood

Arteries

Carry blood away from the heart

Veins

Return blood to the heart

Capillaries

Connect the arteries and the veins and provide for the exchange of nutrients and waste materials in every cell of the body

Atria

Two thin-walled upper chambers; atrium

Ventricles

Two thick-walled lower chambers

Septum

Thick vertical wall that divides the left chambers from the right chambers

A-V Valve

Separate each atrium and ventricle

Pulmonary arteries

Travels to the lungs, where an exchange of gases takes as the blood receives oxygen and gives up carbon dioxide

Pulmonary veins

Four veins two on each lung that oxygenated bloods flows through

Pulmonary circulation

The flow of blood from the heart to the lungs and back to the heart

Aorta

The body’s largest artery

Arterioles

Smaller arteries

Venules

Smaller ventricles

Venae cavae

The body’s largest veins

Systemic circulation

The movement of blood through all parts of the body except the lungs

Blood pressure

The amount of force that blood exerts upon the walls of the blood vessels

Systolic pressure

The pressure during the contraction of the ventricles

Diastolic pressure

The pressure during relaxation of the ventricles

Pulse

The rhythmic change of pressure that causes the arteries’ walls to bulge outward and then return to normal

Radial arteries

Wrists

Cardiod arteries

Neck

Stroke volume

The volume of blood ejected from the ventricles with each contraction and your stamina

Pneumology

The study of the respiratory system its structure, functions, disorders, and diseases

Lungs

Large, spongy, organs located inside the thoracic cavity on either side of the heart

Pharynx

Throat

Glottis

The opening of the trachea

Larynx

Voice box

Trachea

Windpipe

Epiglottis

The flap of cartilage covering the glottis

Bronchi

Two folds of elastic tissues

Bronchi

Bronchus

Bronchioles

The smallest bronchial tubes

Alveoli

Microscopic air sacs that make up the tissue of lungs

Diaphragm

Airtight chamber with a moveable floor of muscle

Vital capaciy

The volume of air when you inhale and exhale as much air as you can