Unit 3 Lesson 3 How Do Cells Work Together? Copyright © Houghton Mifflin Harcourt Publishing Company.

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Transcript Unit 3 Lesson 3 How Do Cells Work Together? Copyright © Houghton Mifflin Harcourt Publishing Company.

Slide 1

Unit 3 Lesson 3 How Do Cells Work Together?

Copyright © Houghton Mifflin Harcourt Publishing Company


Slide 2

Unit 3 Lesson 3 How Do Cells Work Together?

Objectives:
• Describe the relationship between organs, organ
systems and organisms.
• Describe nervous system structures and their functions.
• Explain how the parts of the integumentary system help
it function.
Vocabulary:
Tissue
Organ system
Organ
Skin
Brain

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Slide 3

Unit 3 Lesson 3 How Do Cells Work Together?

How Cells Are Organized
• Cells are organized to work together so the body
functions smoothly.

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Slide 4

Unit 3 Lesson 3 How Do Cells Work Together?

How Cells Are Organized
• Tissue is made up of
cells of the same type
that work together to do
a certain job.
• The body has four
different types of tissues:
muscle, connective,
nerve, and epithelial.

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Slide 5

Unit 3 Lesson 3 How Do Cells Work Together?

How Cells Are Organized

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Slide 6

Unit 3 Lesson 3 How Do Cells Work Together?

How Cells Are Organized

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Slide 7

Unit 3 Lesson 3 How Do Cells Work Together?

How Cells Are Organized
• An organ is made up of several
tissues that work together to do
a certain job.

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Slide 8

Unit 3 Lesson 3 How Do Cells Work Together?

How Cells Are Organized
• Organs that work together to do
a job for the body make up an
organ system.

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Slide 9

Unit 3 Lesson 3 How Do Cells Work Together?

How Cells Are Organized
• Exit Slip Q2 in Active reading sheet

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Slide 10

Unit 3 Lesson 3 How Do Cells Work Together?

How Cells Are Organized
• Homework Q3 in Active reading sheet

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Slide 11

Unit 3 Lesson 3 How Do Cells Work Together?

How Cells Are Organized
• Homework Q3 in Brain check sheet

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Slide 12

Unit 3 Lesson 3 How Do Cells Work Together?

The Information Highway
• Warm up Q1 in Active reading sheet

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Slide 13

Unit 3 Lesson 3 How Do Cells Work Together?

The Information Highway
• Sensing your
surroundings
and
communicating
information are
the jobs of your
nervous
system.

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Slide 14

Unit 3 Lesson 3 How Do Cells Work Together?

The Information Highway
• The nervous system is made
of tiny structures called nerve
cells. Chains of long nerve
cells make up nerves.
• Nerves carry information to
and from the brain, which
processes information.
• The spinal cord, a rope-like
bundle of nerve tissue, is the
main pathway for information
travelling to and from the
brain.

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Slide 15

Unit 3 Lesson 3 How Do Cells Work Together?

The Information Highway
Exit Slip

Q4 in Active reading sheet

Word bank
Nerves
Brain
Spinal cord
Eyes
Brain

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Slide 16

Unit 3 Lesson 3 How Do Cells Work Together?

Senses
• Senses are your body’s way of gathering information.
• Senses include sight, hearing, smell, touch, and taste.

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Slide 17

Unit 3 Lesson 3 How Do Cells Work Together?

Sight and Smell
Sight
• The iris is the part of the
eye that gives your eye
color. Light enters the eye
through the pupil.
• The retina at the back of
the eye contains nerve cells
that detect light. These
nerve cells send signals to
the brain.

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Slide 18

Unit 3 Lesson 3 How Do Cells Work Together?

Sight and Smell
Exit Slip

Q5 in Active reading sheet

Word bank
Light
Retina
Pupil
Iris
lens

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Slide 19

Unit 3 Lesson 3 How Do Cells Work Together?

Taste
• Taste buds on
the tongue
sense chemicals
in food.
• Taste buds are
attached to
nerves that send
messages to the
brain. The brain
interprets this
information as
taste.

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Slide 20

Unit 3 Lesson 3 How Do Cells Work Together?

Hearing and Taste
Exit Slip

Q8 in Active reading sheet

Word bank
Taste buds
lips
chemicals

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Slide 21

Unit 3 Lesson 3 How Do Cells Work Together?

Sight and Smell
Smell

• Inside the nose, tiny
structures sense chemicals
in the air.
• These structures are
attached to nerve cells in
the olfactory bulb that
send messages to the
brain.

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Slide 22

Unit 3 Lesson 3 How Do Cells Work Together?

Sight and Smell
Exit Slip

Q6 in Active reading sheet

Word bank
Brain – spinal cord – chemicals – olfactory bulb

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Slide 23

Unit 3 Lesson 3 How Do Cells Work Together?

Hearing and Taste
Hearing
1.
2.
3.

The outer ear funnels sound into the middle ear causing the eardrum to
vibrate.
Tiny bones ( hammer, anvil, and stirrup) pass vibrations to the inner
ear where a fluid-filled structure called the cochlea passes vibrations to
tiny hairs on the nerves.
These nerves send messages about vibrations to the brain and you
hear.

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Slide 24

Unit 3 Lesson 3 How Do Cells Work Together?

Hearing and Taste
Exit Slip

Q7 in Active reading sheet

Word bank
Outer ear
Eardrum
Cochlea

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Slide 25

Unit 3 Lesson 3 How Do Cells Work Together?

The Skin You’re In
• Skin is a protective layer that
covers the body.
• Skin, fingernails, toenails, and hair
are part of the integumentary
system. The integumentary system
protects the inside of the body.
• Skin keeps germs out of the body
and water in the body.
• When you get too hot, sweat on
the skin cools the body. When you
get too cold, hair keeps your head
warm.
• Hair also protects your skin.
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Slide 26

Unit 3 Lesson 3 How Do Cells Work Together?

The Skin You’re In

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Slide 27

Unit 3 Lesson 3 How Do Cells Work Together?

The Skin You’re In
• Identify in the
image below:
Epidermis
Dermis
Nerve endings
Hair follicles

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