Circulation and Respiration

Science

Watch Lesson: Circulation and Respiration

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tiny, thin-walled sacs in the lungs where oxygen and carbon dioxide are exchanged between air and the blood

Tiny, Thin-walled Sacs In The Lungs Where Oxygen And Carbon Dioxide Are Exchanged Between Air And The Blood.

Alveolus

Alveolus Simple Definition

a blood vessel that carries blood away from the heart

A Blood Vessel That Carries Blood Away From The Heart.

Artery

Artery Simple Definition

a disorder which narrows the airways to the lungs, making breathing difficult

A Disorder Which Narrows The Airways To The Lungs, Making Breathing Difficult.

Asthma

Asthma Simple Definition

one of the two upper chambers of the heart, it receives blood from the body

One Of The Two Upper Chambers Of The Heart, It Receives Blood From The Body.

Atrium

Atrium Simple Definition

the fluid that carries nutrients to the body’s cells and removes waste

The Fluid That Carries Nutrients To The Body’s Cells And Removes Waste.

Blood

Blood Simple Definition

the force that the blood exerts on the walls of the arteries

The Force That The Blood Exerts On The Walls Of The Arteries.

Blood Pressure

Blood Pressure Simple Definition

one of the two large tubes that connect the trachea to the lungs

One Of The Two Large Tubes That Connect The Trachea To The Lungs.

Bronchus

Bronchus Simple Definition

a tiny blood vessel that allows the exchange of gases, nutrients, and waste products

A Tiny Blood Vessel That Allows The Exchange Of Gases, Nutrients, And Waste Products.

Capillary

Capillary Simple Definition

the heart, blood, and blood vessels that together transport nutrients to the entire body

The Heart, Blood, And Blood Vessels That Together Transport Nutrients To The Entire Body.

Cardiovascular System

Cardiovascular System Simple Definition

the system of the heart, blood, and blood vessels, it moves oxygen, nutrients and waste

The System Of The Heart, Blood, And Blood Vessels, It Moves Oxygen, Nutrients And Waste.

Circulatory System

Circulatory System Simple Definition

the muscle below the lungs that controls breathing

The Muscle Below The Lungs That Controls Breathing.

Diaphragm

Diaphragm Simple Definition

a lung disease that destroys lung tissue and makes breathing difficult

A Lung Disease That Destroys Lung Tissue And Makes Breathing Difficult.

Emphysema

Emphysema Simple Definition

the muscular organ that pumps blood through the body

The Muscular Organ That Pumps Blood Through The Body.

Heart

Heart Simple Definition

the death of heart tissue due to a blockage of its blood supply

The Death Of Heart Tissue Due To A Blockage Of Its Blood Supply.

Heart Attack

Heart Attack Simple Definition

the iron-containing protein in red blood cells that binds to oxygen

The Iron-containing Protein In Red Blood Cells That Binds To Oxygen.

Hemoglobin

Hemoglobin Simple Definition

blood pressure above the normal range, it is also called high blood pressure

Blood Pressure Above The Normal Range, It Is Also Called High Blood Pressure.

Hypertension

Hypertension Simple Definition

the voice box, it contains vocal cords

The Voice Box, It Contains Vocal Cords.

Larynx

Larynx Simple Definition

the respiratory organ that absorbs oxygen from the air and removes carbon dioxide from the blood

The Respiratory Organ That Absorbs Oxygen From The Air And Removes Carbon Dioxide From The Blood.

Lung

Lung Simple Definition

a clear tissue fluid that moves between the blood and the lymph vessels, it transports fats and aids the immune system

A Clear Tissue Fluid That Moves Between The Blood And The Lymph Vessels, It Transports Fats And Aids The Immune System.

Lymph

Lymph Simple Definition

an organ that filters pathogens from lymph, it contains lymphocytes

An Organ That Filters Pathogens From Lymph, It Contains Lymphocytes.

Lymph Node

Lymph Node Simple Definition

the nodes and vessels that return lymph to the blood, and help the body fight disease

The Nodes And Vessels That Return Lymph To The Blood, And Help The Body Fight Disease.

Lymphatic System

Lymphatic System Simple Definition

the tubelike passage from the mouth, it carries food and air

The Tubelike Passage From The Mouth, It Carries Food And Air.

Pharynx

Pharynx Simple Definition

the liquid part of blood, it is clear yellow and contains blood cells

The Liquid Part Of Blood, It Is Clear Yellow And Contains Blood Cells.

Plasma

Plasma Simple Definition

a cell fragment that helps form blood clots

A Cell Fragment That Helps Form Blood Clots.

Platelet

Platelet Simple Definition

the flow of blood between the heart and the lungs

The Flow Of Blood Between The Heart And The Lungs.

Pulmonary Circulation

Pulmonary Circulation Simple Definition

a disc-shaped cell that uses hemoglobin to carry oxygen from the lungs to the body

A Disc-shaped Cell That Uses Hemoglobin To Carry Oxygen From The Lungs To The Body.

Red Blood Cell

Red Blood Cell Simple Definition

the use of oxygen by cells to break down food, and release carbon dioxide and energy

The Use Of Oxygen By Cells To Break Down Food, And Release Carbon Dioxide And Energy.

Respiration

Respiration Simple Definition

the organs that transfer oxygen from the air to the body, like the nose, trachea and lungs

The Organs That Transfer Oxygen From The Air To The Body, Like The Nose, Trachea And Lungs.

Respiratory System

Respiratory System Simple Definition

the flow of blood between the heart and all parts of the body, except the lungs

The Flow Of Blood Between The Heart And All Parts Of The Body, Except The Lungs.

Systemic Circulation

Systemic Circulation Simple Definition

the windpipe, it carries air from the mouth and nose to the lungs

The Windpipe, It Carries Air From The Mouth And Nose To The Lungs.

Trachea

Trachea Simple Definition

a blood vessel that carries blood to the heart

A Blood Vessel That Carries Blood To The Heart.

Vein

Vein Simple Definition

one of the heart’s two lower chambers, it pumps blood out of the heart

One Of The Heart’s Two Lower Chambers, It Pumps Blood Out Of The Heart.

Ventricle

Ventricle Simple Definition

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