Circulatory System Transports nutrients, gases and wastes

Types of Circulatory Systems 2) Invertebrates circulatory A) No Circulatory System B) Open Circulatory System Vertebrates Closed Circulatory System

3) One celled animals - (paramecium) No circulatory system Takes in food and form a vacuole which moves around inside

4) Simple organisms - Ex. hydra No circulatory system takes in fluid with oxygen and food into a single cavity (gut) and it then flows around in its body

5) Larger organisms Have more than one body opening. Need a circulatory system to carry nutrients around the body A second opening to removes wastes OUT IN

6) Open circulatory system When there is no separation between blood and other fluids Ex. Arthropods – Like insects and crabs that have an outer shell

7) Closed circulatory system When blood is contained in vessels. Large vessels bring blood to small vessels and then returns. It is pumped by a heart (s) Ex. Earthworm and more complex animals

8) Vertebrate circulation Very complex cardiovascular system composed of the heart, blood vessels and blood. Occurs in all vertebrates

9) Types of vertebrate Hearts 2 chamber: 1 atria, 1 ventricle ex. Fish 3 chamber: 1 atria, 2 ventricles ex. Amphibians + reptiles 4 chamber: 2 atria, 2 ventricles ex. Mammals + birds

Human Circulatory system

10) The 3 main parts of The Circulatory system The Heart The Blood Vessels Blood

Human heart

Heart – Parts Atrium (atria) – Blood enters heart - receiving chambers - thin muscle walls Ventricle (ventricles) – - Blood pumps out to body - Has Thick muscle walls Valves – control blood flow

Heart sides Right side – deoxygenated blood goes to lungs Left side – oxygenated blood goes to body Septum – Separates the 2 sides of heart

Blood flow through heart

12) Types of Blood Vessels Arteries Veins Capillaries

13) Arteries -Carry Oxygenated blood away from Heart -The Aorta is the largest artery to body -Pulmonary arteries go to lungs

14) Veins -Carry deoxygenated blood back to heart - Low pressure blood -Veins contain one way valves -The Vena Cava is the largest vein to heart

15) Capillaries Tiny vessels where gasses and nutrients exchanged with cells

16) Blood is made of two parts Two Parts Plasma (Fluid) makes up 55% of the blood volume. Solids (Cells) make up 45% of the blood volume.

17) Blood Plasma 97% Water 3% -Antibodies, Proteins Nutrients and Wastes

18) Blood Cells Red Blood Cells -Carry oxygen -Contain Hemoglobin White Blood Cells -Attack bacteria & other invaders Platelets -Control the blood clotting process

19) Blood Pressure Systolic- Peak pressure Diastolic- Minimum pressure (resting) Normal average adult Systolic = 120 mmHg Diastolic = 80 mmHg

Normal blood pressure? Average adult 120/80 Whats your average?

Heart Attack!!! When Blood flow that feeds the heart is blocked DAMAGE

heart rap