2.02 Understand the functions and disorders of the circulatory system

2.02 Understand the functions and disorders of the circulatory system 2

2.02 Understand the functions and disorders of the circulatory systemEssential questions:What are the functions of blood?What are some disorders of the blood?How are blood disorders treated?How do you relate the body’s use of nutrients to the blood?

What are the functions of the circulatory system?What are some disorders of the circulatory system?How are disorders of the circulatory system treated?How do you relate the body’s use of nutrients to the circulatory system?

What are the functions of blood?

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TransportationWhat does the blood transport?

Why is this an important function?

What are the functions of blood?

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RegulationHow does the blood regulate heat?

How does the blood regulate acid/base balance?

What are the functions of blood?

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ProtectionWhat function of the blood serve to protect the body?

What is the relevance to health?

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Functions of the blood components

Plasma Erythrocytes Leukocytes Thrombocytes

Plasma

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Plasma

Cellular elements

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Erythrocytes

What are the functions of erythrocytes?

hemo= blood globin= protein

What is the function of hemoglobin?

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Erythrocytes

hemolysis What is it?

Where does it occur?

What is the lifetime of an erythrocyte?

What happens to old erythrocytes?

Starts here

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Rh factor

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Leukocytes

What is the function of leukocytes?

Compare leukocytes to erythrocytes.

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Leukocytes

Agranulocytes Lymphocytes

Monocytes

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Leukocytes

Granulocytes Neutrophils

Eosinophils

Basophils

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Inflammation

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Inflammation

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Thrombocytes

What is the composition of thrombocytes?

What is their function?

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Thrombocytes

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Blood types

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Blood types

Compare blood types. (antigen/antibodies) A

BABO

Who can receive type O blood?

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Rh factor

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Blood Disorders AnemiaReview the symptoms of

anemia.

Discuss why these symptoms occur.

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Blood disorders

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Blood disorders

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Blood disorders

Review the symptoms of hemophilia.

Discuss why these symptoms occur.

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Blood disorders

LeukemiaLeukemiaWhat is leukemia?

Review the symptoms of leukemia.

Discuss why these symptoms occur.

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Blood disorders

Multiple myeloma

What is multiple myeloma?

What are the symptoms?

How is it treated?

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Blood disorders

Polycythemia

What is polycythemia?

What are the symptoms?

How is it treated?

Plasma

Cellular

elements

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Blood disorders

Septicemia

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Blood disorders Sickle cell anemia

What is sickle cell anemia?

What are the symptoms?

How is it treated?

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What are the functions of the heart?

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Functions of the heart

Did you know? At rest, 2 ounces of blood

is circulated with each heart beat.

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Functions of the heartIt’s a PUMP

What do pumps do?What do pumps do?

How does this relate to heart function?How does this relate to heart function?

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Hear the beat!

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Blood Pressure FYI

Blood pressure is the surge of blood when heart pumps creates pressure against the walls of the arteries

SYSTOLIC PRESSURE Measured during the contraction phase

DIASTOLIC PRESSURE Measured when the ventricles are relaxed

What is the normal range of blood pressure for an adult?

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Functions of the heartIt’s a PUMP

What makes the pump work?What makes the pump work?

It’s electric!Explain the electrical activity of the heart.

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It’s electric!

Discuss the function of the heart’s conduction

system.

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Electrocardiogram EKG or ECG SYSTOLE = contraction phase DIASTOLE = relaxation phase

Baseline of an EKG is a flat line:

P = Atrial contraction

QRS = Ventricular contraction

T = Ventricular relaxation

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Functions of the heartIt’s a PUMP

What makes the pump work?What makes the pump work?

It’s electric!

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Functions of the heartTransportationWhat does the heart transport?What does the heart transport?

What is involved in the transportation What is involved in the transportation process?process?

How is this a circulatory system function?How is this a circulatory system function?

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The transportation process

Discuss systemic circulation

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The transportation process

Right side Superior vena cava

Inferior vena cava

Right atrium

Tricuspid valve

Right Ventricle

Pulmonary valve

Pulmonary artery

Lungs CO2 and O2 exchange

Left SidePulmonary vein

Left atrium

Bicuspid valve

Left ventricle

Aortic valve

Aorta

Body

(Schematic of systemic circulation)

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The transportation process

Discuss cardiopulmonary circulation

CompareSystemic Circulation ToCardiopulmonary Circulation

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Vessels of the circulatory system ARTERIES

What are the functions of arteries?

What are the characteristics of arteries?

Which direction do arteries flow?

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Vessels of the circulatory system

Describe arterial blood.

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Vessels of the circulatory system VEINS

What is the function of arteries?

What are the characteristics of arteries?

Which direction do arteries flow?

Compare arterial and venous blood.

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Vessels of the circulatory system

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Vessels of the circulatory system

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Vessels of the circulatory systemCapillaries

What is the function of capillaries?What happens if this action is obstructed?

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Remember Pulse Sites?

Where do they come from?

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Circulatory disorders

Aneurysm

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Circulatory disorders

Angina pectoris

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Circulatory disorders

Arrhythmia Is any change from normal

heart rate or rhythm

BRADYCARDIA Slow heart rate (<60 beats

per minute)

TACHYCARDIA Rapid heart rate (>100

beats per minute)

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Circulatory disorders

Arteriosclerosis

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Circulatory disorders

Atherosclerosis

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Circulatory disorders

Coronary artery disease

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Circulatory disorders Hypertension

What is hypertension?

What factors influence the

development of

hypertension?

How is it treated?

Why is it called the “silent

killer?”

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Circulatory disorders

Heart failure

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Circulatory disorders

Murmurs

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Circulatory disorders

Myocardial infarction

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Circulatory disorders

Peripheral vascular disease

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Circulatory disorders

Pulmonary edema

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Circulatory disorders

Transient ischemic attack

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Circulatory disorders

Varicose veins

Prevention Wear sunscreen Elevate legs when resting Wear elastic support stockings Eating fiber diets Exercise Weight control

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Circulatory disordersLeading Causes of Death:

The Impact of Circulatory Disorders

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Relevance of nutrients to the blood and circulatory system The circulatory

system plays a vital role in homeostasis Absorption and

transport of nutrients to cells, tissues, organs, and systems