BELL WORK (Buff Binder): Copy the bolded words in the question below and write your entire answer: Which of the following systems interact to acquire oxygen and distribute it throughout the body? a. respiratory and digestive b. respiratory and circulatory c. digestive and integumentary d. integumentary and circulatory

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Today’s Standard: describe the interactions that occur among [animal] systems that perform the functions of…defense from injury or illness… (B.10A)

Set up today’s page… Page: 75 Date: Title: Defense Essential Question: How do animal systems interact to defend the body?

Defense Integumentary (1 st line of defense) Immune (2 nd line of defense) Circulatory SYSTEMS INVOLVED

1. INTEGUMENTARY SYSTEM Main Parts: – Skin – Hair – Nails

Do all animals have the same kind of integumentary system? Why?

1. INTEGUMENTARY SYSTEM Main Functions: – Holds in water – Keeps out foreign objects – Helps control body temperature

The Integumentary system acts as a wall or barrier to any outside threats!

Occasionally threats make it past the wall…

2. IMMUNE SYSTEM (lymphatic) Main Parts: – Antibodies (protective proteins) – T-cells – B-cells

B-Cells, Antibodies and T-cells are the soldiers that fight infections if they get past the wall…

2. IMMUNE SYSTEM Main Functions: – B-cells produce antibodies that attack pathogens in the blood – T-cells attack invaders – B-cells, T-cells, and antibodies are specific to what it attacks

3. CIRCULATORY SYSTEM RECAP Main Parts: – Blood vessels – Heart – White blood cells (includes B- and T- cells)

3. CIRCULATORY SYSTEM Main Functions: – Transports antibodies & white blood cells – Transports toxins and waste products to be removed

MID-LESSON DEBRIEF: Explain how the three systems work together to defend the body against illness. The integumentary system is the first line of defense, keeping out most invaders. The immune system (b and t cells) kicks in when something gets past the integumentary system, and uses the circulatory system to move within the body.

ALLERGIC REACTIONS are your body overreacting to certain substances. Allergies are the result of a hypersensitive immune system.

INJURY Nervous EndocrineSkeletalMuscular SYSTEMS INVOLVED

1. NERVOUS & ENDOCRINE SYSTEMS Electrical & chemical responses Reflexes Hormones

2. SKELETAL SYSTEM Main Parts: – Bones – Joints – Ligaments (join bone to bone) – Tendons (join muscle to bone) – Cartilage

2. SKELETAL SYSTEM Main Functions: – Gives support & structure – Protects internal organs – Helps you move

3. MUSCULAR SYSTEM Main Parts: – Smooth muscle involuntary movement – Cardiac (heart) muscle involuntary movement – Skeletal muscle voluntary movement Main Function: – Moves your body

DEBRIEF: Explain how the four systems work together to prevent injury if you touch a hot stove. The nervous & endocrine systems recognize the increased temperature, and send signals to the skeletal & muscular systems to move the body away from injury.