3. TAKS Objective 2
The student will demonstrate an
understanding of living systems and the
environment – Interdependence occurs
among living systems
4. TEKS Science Concept
• TEKS 7.9 (A) identify the systems of the
human organism and describe their
functions.
5. Student Prior Knowledge
• TEKS 6.10 (C) identify how structure
complements function at different levels of
organization including organ and organ
systems.
8. Circulatory System
Function
• The overall function of the circulatory system is
to transport materials throughout the body
toward and away from particular target organs
and tissues.
9. Two Pathways
• Pulmonary Circulation
– Carries blood to lungs and back to the heart
• Systemic Circulation
– Carries blood to body and back to the heart
10. Capillaries of head and arms
Capillaries of abdominal
organs and legs
Inferior vena cava
Pulmonary vein
Capillaries of right
lung
Superior vena
cava
Aorta
Pulmonary artery
Capillaries of left
lung
16. Veins:
Carries blood to heart
– Carries blood that contains
waste and CO2
Exception pulmonary vein
– Blood not under much
pressure
– Valves to prevent much
gravity pull
Venules: larger than capillaries
19. Your Heart: The Vital Pump
At REST, the heart
pumps about 5
QUARTS of blood a
minute.
During EXTREME
EXERTION (exercise)
it can pump 40 quarts
a minute.
21. Structure of Heart
Four chambers
– Two upper (Atria)
Right Atria
Left Atria
– Two lower
(Ventricles)
Right Ventricle
Left Ventricle
22.
23. Bloods Path Through the Heart
Both Atria fill at same time
– Rt atrium receives oxygen POOR blood from
body via the vena cavas
– Left atrium receives oxygen RICH blood from
lungs through four pulmonary veins
After filled with blood atria contract,
pushing blood into ventricle
24. Both ventricles contract
Right ventricle contracts and pushes
oxygen-poor blood toward lungs,
against gravity,
through pulmonary arteries
25. Left ventricle contracts and forces oxygen
rich blood
out of heart through
aorta (largest vessel)
Bloods Path Through the Heart
(cont)
26.
27. The Blood
Body contains 4-6 L
Consists of
– Water
– Red Blood Cells
– Plasma
– White blood cells and
platelets
28. Erythrocytes (RBC)
Transporters of
– Oxygen
– Carbon Dioxide
RBC are produced in red bone
marrow of
– ribs,
– humerus,
– femur,
– sternum, and other long bones
29. Leukocytes (WBC)
WBC fight infection
– Attack foreign
substances
Less abundant
Large cells
30. Platelets
PLATELETS are for CLOTTING blood
Cell fragments
Produced in bone marrow
Fibrin (sticky network of protein
fibers)
– Form a web trapping blood cells
31. Section 37-2
Blood Clotting
Break in Capillary Wall
Blood vessels injured.
Clumping of Platelets
Platelets clump at the site
and release thromboplastin.
Thromboplastin converts
prothrombin into thrombin..
Clot Forms
Thrombin converts
fibrinogen into fibrin, which
causes a clot. The clot
prevents further loss of
blood..
32. Blood Types
Massive loss of blood requires a transfusion
Four Types
– A
– B
– AB
– O
Inherited from your parents
34. What happens when you mix blood
types?
Plasma contains proteins that
correspond to the shape of the
different antigens
If you mix one type with the
wrong one, you get CLUMPING
Type O is the universal donor
Type AB is the universal acceptor
37. Rh Factor
Rhesus factor (Rh), also inherited
– Rh+ (have antigen)
– Rh- (NO antigen)
Can cause complications in pregnancies
– mother Rh- 1st baby Rh+ : blood mixes with
mother; mother’s body makes anti-Rh+
antibodies
– 2nd Rh + body attacks baby
– Now have medicine to prevent antibody
formation
39. ENGAGE
1. Walt Disney’s 1957 “Hemo the Magnificent”
2. Play song from St. Joseph’s Aspirin Commercial
(originally in Happy Days episode) at:
http://www.stjosephaspirin.com/page.jhtml?id=/stjoseph/include/5_2.inc
40. Lyrics
• Pump, pump, pumps your Blood.
• The right atrium’s where the process begins, where the
CO2 Blood enters the heart.
• Through the tricuspid valve, to the right ventricle, the
pulmonary artery, and lungs.
• Once inside the lungs, it dumps its carbon dioxide and
picks up its oxygen supply.
• Then it’s back to the heart through the pulmonary vein,
through the atrium and left ventricle.
• Pump, pump, pumps your Blood.
42. Capillaries of head and arms
Capillaries of abdominal
organs and legs
Inferior vena cava
Pulmonary vein
Capillaries of right
lung
Superior vena
cava
Aorta
Pulmonary artery
Capillaries of left
lung
43. EXPLAIN
Circulation Coloring Activity
1. Color the path of oxygenated blood red.
2. Color the path of deoxygenated blood blue
3. Label the following structures on the above diagram:
Aorta
Left Atria Right Atria
Left Ventricle Right Ventricle
Lungs Vena Cava
Tissues of the Body Capillaries
4. Use arrows to indicate blood flow direction.
46. What is Blood Made of?
• CANDY RED HOTS 44%: Red Blood
Cells (RBCs) - carry oxygen and
carbon dioxide around body, RBCs
only live for about 3 months but are
continuously produced in the bone
marrow.
CORN SYRUP 55%: Plasma/Water -
syrupy, thick, clear, yellowish liquid
that carries dissolved food and
wastes in water.
WHITE JELLY BEANS 1/2%: White
Blood Cells (WBCs) - bigger than
RBCs, oddly-shaped cells that 'eat'
bits of old blood cells and attack
germs.
CANDY SPRINKLES 1/2%: Platelets
- bits of cells and cytoplasm that help
your blood clot.
47. EVALUATE
• Given a drawing the student will label and describe the
functions of the four major parts of the circulatory system:
Heart, arteries, veins and capillaries.
• After participating the circulatory relay simulation, the
learner will travel the correct circulation pathway beginning
at the left ventricle and ending at the left atrium.
• After participating in the blood activity, the learner will list
the following four components of the blood: RBC, WBC,
Plasma and Platelets and describe the function of blood.