Your Body Systems
Warm-Up Questions
CPS Questions 1-2
Chapter 3, Lesson 1
Chapter Overview
Lesson 1: Your Body Systems
 Lesson 2: Nutrition
 Lesson 3: The Benefits of Physical Activity
 Lesson 4: Understanding Your Body Image
 Lesson 5: First Aid
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Chapter 3, Lesson 1
Lesson Overview
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Functions of the human skeletal system
How your muscular system works
The human circulatory system
The human respiratory system
How the nervous system and sense organs work
The human digestive system
The body’s waste disposal system
Chapter 3, Lesson 1
Quick Write
The human body is made up of several
different systems that work together as
one unit. What do you think is the most
amazing thing about how your body works?
(Note to teacher: Use “Pick a Student” button in CPS)
Chapter 3, Lesson 1
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The Human Skeletal System
Your body’s framework
 Three main functions:
 Support and protection
 Movement
 Storage and production of
materials
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Chapter 3, Lesson 1
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Kinds of Bones
Your body has more than 200 bones
 Four basic kinds of bones
 Long bones
 Short bones
 Flat bones
 Irregular bones
 Long bones have larger ends that form a
joint with another bone
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Chapter 3, Lesson 1
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Caring for Your Skeletal System
Eat food with nutrients and vitamins
 Phosphorus is in dairy products, dark
green leafy vegetables, beans, and whole
grains
 Milk is fortified with vitamin D
and contains calcium
 Do regular physical activity to
strengthen bones
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Chapter 3, Lesson 1
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Activity 1: The Skeletal System
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Review the section in your textbook on
the functions of the human skeletal
system
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Complete the table to describe the three
main functions of the skeletal system and
answer the questions
Chapter 3, Lesson 1
Types of Muscles
Smooth
 Skeletal
 Cardiac
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Chapter 3, Lesson 1
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The Muscular System
All body movements depend on
muscles
 Your body has about 600 muscles
 Exercise and healthy eating are
important for good muscle tone
 To keep your muscles strong and
healthy, do daily regular physical
activity
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Chapter 3, Lesson 1
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Learning Check Questions
CPS Questions 3-4
Chapter 3, Lesson 1
Activity 2: Muscle Injuries
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Research and locate a news article about
a specific muscle injury
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Identify the injury, medical evaluation,
and treatment
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Take notes and answer the question
Chapter 3, Lesson 1
The Human Circulatory System
Your body’s transportation system
 Blood carries food and oxygen to
every cell
 Blood is made up of:
 Red blood cells
 White blood cells
 Platelets
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Chapter 3, Lesson 1
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The Human Circulatory System,
cont.
Your heart pumps blood to all parts of
your body
 Average heart beats 72 times a minute
 Blood vessels distribute blood
throughout your body
 Three kinds of blood vessels
 Arteries
 Capillaries
 Veins
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Chapter 3, Lesson 1
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Preventing High Blood Pressure
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Need to keep a certain level of
blood pressure for proper blood
circulation
 Maintain a healthy weight
through a healthy diet
 Exercise regularly
 Avoid tobacco, alcohol,
and drugs
Chapter 3, Lesson 1
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Activity 3: The Circulatory System
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Review the section in your textbook on
the human circulatory system
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Answer the questions
Chapter 3, Lesson 1
The Human Respiratory System
Brings a constant supply of oxygen
from air into your body
 Gets oxygen into your body
 Also gets rid of carbon dioxide, a
waste product
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Chapter 3, Lesson 1
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Learning Check Questions
CPS Questions 5-6
Chapter 3, Lesson 1
Activity 4: The Respiratory System
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Review the section in your textbook on
the respiratory system
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Match each term to its correct
definition
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Answer the questions
Chapter 3, Lesson 1
The Nervous System
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Central nervous system
 Made up of the brain and the
spinal cord
 The brain has three main parts:
the cerebrum, cerebellum, and
brain stem
Peripheral nervous system
 Carries messages between
your brain and spinal cord and
the rest of your body
Chapter 3, Lesson 1
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The Sense of Sight
Light enters the eye through the
cornea
 The cornea sends the light to the pupil
 The lens helps direct the light energy
onto the retina
 Entire process happens faster than you
can blink
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Chapter 3, Lesson 1
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The Sense of Hearing
Outer ear picks up air vibrations and sends
them to your eardrum
 Your brain interprets the message and tells
you what kind of sound you have heard
 All of this happens in the time it takes for
the sound to be made
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Chapter 3, Lesson 1
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The Senses of Smell and Taste
Nose
 Receptor cells send messages
through nerves
 Can pick up thousands of
different odors
 Tongue
 Can recognize only four kinds of
taste: sweet, salty, sour, and
bitter
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Chapter 3, Lesson 1
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The Sense of Touch
Your skin is your body’s largest organ
 Sense receptors all over your skin receive
different sensations
 Sense receptors send messages through
the nerves to your spinal cord and brain
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Chapter 3, Lesson 1
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Activity 5: The Brain and the Senses
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Review the section in your textbook on
how the nervous system and sense
organs work
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Complete the tables to describe the
functions and other characteristics of
the brain and senses
Chapter 3, Lesson 1
The Human Digestive System
The digestive system breaks down
food for your body’s use
 Chewing is part of mechanical
digestion
 The enzyme in saliva begins to
break down the food chemically
 Food stays in your stomach for
three to four hours
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Chapter 3, Lesson 1
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Diabetes
One of the most serious medical issues
Americans face today
 Type I
 Cells in the pancreas are
not able to produce insulin
 Type II
 Pancreas makes insulin but your body
cells cannot use the insulin properly
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Chapter 3, Lesson 1
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Learning Check Questions
CPS Questions 7-8
Chapter 3, Lesson 1
The Body’s Waste Disposal System
Waste products must be removed
from the body
 The body disposes of waste solids
and liquids through the excretory
system
 Solid material is removed
through the large intestine
 Liquid material is removed
through the kidneys
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Chapter 3, Lesson 1
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Activity 6: The Digestive and
Excretory Systems
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Review the sections in your textbook on
the human digestive system and the
body’s waste disposal system
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Label the diagrams and answer the
questions
Chapter 3, Lesson 1
Summary
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Functions of the human skeletal system
How your muscular system works
The human circulatory system
The human respiratory system
How the nervous system and sense organs work
The human digestive system
The body’s waste disposal system
Chapter 3, Lesson 1
Review Questions
CPS Questions 9-10
(Note to teacher: Use “Pick a Student” button in CPS)
Chapter 3, Lesson 1
Next….
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Done – your body systems
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Next – nutrition
Chapter 3, Lesson 1
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