Download chapter 3, unit A

Chapter Three
Unit A
Human Body
Systems
Lesson 1
What are the circulatory
& respiratory systems?
Vocabulary Words
 Artery Capillary Circulatory system Heart Respiratory system Vein-
Standards
 Students know how blood
circulates through the heart
chambers, lungs, and body and
how carbon dioxide and oxygen
are exchanged in the lungs and
tissues
Respiratory System:
passage for air (pg. 73)
1. Oxygen enters
mouth or nose
2. Trachea
3. Bronchial tubes
4. Lungs
5. Alveoli (air sacs)
6. Capillaries (small
tubes for blood)
7. Oxygen moves to
blood
Circulatory System:
passage for blood (pg. 74)
1. Blood receives oxygen
in lungs
2. Heart
3. Arteries- large tubes
carry blood away from
heart and around body
4. Capillaries- small
tubes for blood
5. Cells
6. Veins- large tubes
carry blood back to
heart
Heart
 The heart has 4
chambers
 The top chambers:
right & left atrium
• receive blood from
the body
 The bottom
chambers: right &
left ventricle
• pump blood to the
body
Lesson 2
What is the digestive
system?
Vocabulary Words
 Digestive system Esophagus Large intestine Small intestine Stomach-
Standards
 Students know the steps of
digestion and the roles of the teeth,
mouth, esophagus, stomach, small
intestine, large intestine, and colon
in the function of the digestive
system
Digestive System:
passage for food (pg. 85)
1.
2.
3.
4.
5.
Teeth chew food
Saliva breaks down food
Esophagus
Stomach
Stomach acid breaks
down food & creates
nutrients (1-3 hrs)
6. Small intestine (1-6 hrs)
7. Large intestine (12-36 hrs)
Foods Easy/Hard to Digest
 bread
 fried food
 Noodles
 spicy food
 rice
 chocolate
 plain crackers
 citrus drinks
 "instant" hot
cereal
 dairy
 bananas
 ice cream
 cereal without milk
 apple sauce
 plain potato
 onion
 broccoli
 beans
 gum
Lesson 3
What is the excretory
system?
Vocabulary Words
 Excretory system Bladder Kidney-
Standards
 Students know the role of the
kidney in removing cellular waste
from blood and converting it into
urine, which is stored in the
bladder
Excretory System:
passage for waste (pg. 93)
1. Kidneys filter blood &
take out waste
2. Urine is created
3. Ureters
4. Bladder
5. Sensors detect size
of bladder & signal
brain to empty
Kidneys
pg. 94
 Keeping kidneys
healthy
• Drink a lot of water
• Exercise
• Eat healthy
 Unhealthy Kidneys
• Need dialysis
• Kidney transplant
• Humans can live with
one kidney
Body Systems
Respiratory
System
Pathway for air
pg. 73
-
Mouth and
Nose
Trachea
Bronchial
tubes
Lungs
Alveoli
Capillaries
Circulatory
System
Digestive
System
Excretory
System
Pathway for blood Pathway for food Pathway for waste
pg. 74
pg. 85
pg. 93
-
Lungs
Heart
Arteries
Capillaries
Veins
-
Teeth
Esophagus Stomach
Small
intestine
Large
intestine
Kidneys
Ureter
Tubes
Bladder