Team Sports• How many people play a team sport?

• How do team sports work?

• What do you have to do in order to be successful as a team?

How is Your Body a Team?• All of the parts of your body must

work together to keep you alive

• If one part does not function properly, then your body does not work as well

• Let’s take a look at the players…

Human Body SystemsHuman Body SystemsChapter 35.1

The Players

• The levels of organization in a multicellular organism from smallest to largest are:– cell→ tissue → organ → organ system

Now let’s take a closer look at the players…

1.Cell

2.Tissue

3.Organ

4.Organ system

Cell• Basic unit of structure and function in an

organism

• Specialized cells– are uniquely suited to perform a particular function

Tissue• A group of cells that perform a single function

• Four basic types of tissues:– Muscle: allows body to move

– Epithelial: glands and tissues that cover interior and exterior body surfaces

– Connective: provides support for the body

– Nervous: transmits nerve impulses

What is the purpose of each of these items?

Electrical WirePlastic Wrap Packaging Tape

What type of tissue is represented by each item?

Electrical WirePlastic Wrap Packaging Tape

epithelial nervous connective

Organ / Organ Systems

• Organ-group of different types of tissues that work

together to perform a single function

• Organ systems-group of organs that perform closely related

functions

Questions

• Can you name some organs found in the human body?

• What are some of the functions of these organs?

• Can you name the 11 organ systems found in the human body?

• What are the main functions of each organ system?

The Organ Systems• 11 different organ systems are

organized in the body

7. Digestive8. Excretory9. Endocrine10. Reproductive

11. Immune

1. Nervous2. Integumentary

3. Skeletal4. Muscular5. Circulatory6. Respiratory

Nervous System Integumentary System Skeletal System Muscular System Circulatory System

Section 35-1

Figure 35-2 Human Organ Systems Part I

Respiratory System Digestive System Excretory System

Endocrine System Reproductive System Lymphatic/Immune Systems

Section 35-1

Figure 35-2 Human Organ Systems Part 2

Room temperature increases

Thermostat senses temperature change and switches on heating system

Thermostat senses temperature change and switches off heating system

Room temperature decreases

Examples of Feedback InhibitionExamples of

Feedback Inhibition