Organisation Circulatory System

What are the levels of living organisms from smallest to largest?

• Tissue - Organ Systems - Cells - Organs - Organism

• Cells - Tissue - Organs - Organ Systems - Organisms

• Organs - Organ Systems - Organisms - Cells - Tissue

• Cells - Tissue - Organisms - Organ Systems - Organs

Tags

NGSS.HS-LS1-2

What are the two different names of heart chambers?

• Anodes

• Atriums

• Lumens

• Ventricles

The Valves in the heart and veins prevent ________.

• Forward Flow

• Cardiac Flow

• Lateral Flow

• Back Flow

What does the heart do to the blood.

• Oxygenates the blood

• Put pressure on the blood to push it around the body.

• Increases the whiteblood count in the blood.

• Decreases blood pressure to prevent cardiac disease.

Why are human cardiac systems referred to as 'Double Circulatory Systems'?

• The heartrate can be doubled to pump more blood around the body when exercising.

• There are two 'dubs' (dub-dub) in one heart beat.

• The blood moves through the heart twice to be pressurized twice.

• Becasue there are two different kinds of blood vessels that are attached to the heart (arteries and veins).

Why do arteries have very thick and elastic walls.

• The protect the blood inside.

• To prevent coronary heart disease,

• So substance like oxygen can't move through the walls.

• To withstand the large amount of pressure in the blood they carry.

Capillaries are really thin so substances like oxygen, carbon dioxide and glucose can move in and out of the vessel. How thick are they?

• Roughly the same thickness of a hair

• One cell thick

• 1 Micrometres

• 5 Micrometres

Which of these are not found in blood

• Red Blood Cell

• White Blood Cell

• Bile

• Platetes

Cornary heart disease (CHD) is when arteries on the heart become blocked with fatty deposits. What isn't a signifcant factor that increases the chance CHD.

• Blood Chloesterol Levels

• Genetics

• Diet and Exercise

• Testerone Levels

What treatment for Coronary Heart Disease does this picture show?

• Stent

• Statin

• Heart Transplant

• By-Pass