1. Human Body systems
Chapter 7

2. Label the systems Nervous System Respiratory System Muscular System
Skeletal
System
Circulatory
System
Digestive
System

3. Digestive System Job Organs
To break down the food we eat, absorb the nutrients and excrete the waste
Organs
Mouth, Tongue, Pharynx, Esophagus, Stomach, Liver, Pancreas, Gallbladder, Small Intestine, Large Intestine, Rectum, Anus

4. Path of Digestion 1. Food enters in the mouth and is broken down
2. The tongue pushes food back
3. Food goes into the throat or pharynx
4. Food goes down a long, hollow tube called the esophagus
5. Stomach = food broken down
8. The liver makes bile which helps break down food and the gallbladder stores it
6. The pancreas makes a chemical to protect the s. intestine
9. Any remaining nutrients and water is absorbed by the large intestine
7. Chyme enters the s.intestine and continues to be broken down; nutrients are absorbed
11. Waste then leaves through the anus
10. Waste such as fiber is stored in the rectum

5. Nutrients and Types
Nutrients are parts of food used by the body to grow and survive
5 Types of nutrients are:
Proteins
Fats
Carbohydrates
Vitamins
Minerals

6. Excretory System Job Organs
Removes solid, liquid and gas waste materials from the body
Organs
Lungs, Liver, Kidneys, Bladder, Rectum

7. Organs Lungs Liver Skin Kidneys Rectum
Remove carbon dioxide and excess water vapor when you breathe out
Liver
Removes waste from the blood. (creates urea)
part of the digestive system
Skin
Removes salt and water when you sweat
Kidneys
Remove urea from the blood and make urine
Rectum
Stores feces until its ready to be expelled.

8. Respiratory System Job Organs
Takes in oxygen and gets rid of Carbon Dioxide
Organs
Lungs, pharynx, larynx, bronchial tubes, bronchi, alveoli

9. Label the diagram 7. Pharynx (throat) Nose Mouth 8. Trachea Larynx
Carbon Dioxide out
Oxygen in
7. Pharynx (throat)
8. Trachea
Left Bronchi
Bronchioles
Alveoli
Nose
Mouth
Larynx
(vocal cords)
4. Lung
5. Right Bronchi
6. Diaphragm

10. Heart, Blood Vessels, Blood
Circulatory system
Job Transports nutrients, gases ,waste and other substances throughout the body.
Major Organs
Heart, Blood Vessels, Blood

11. Circulatory system
Fun Fact Blood travels between the heart and other organs 1,000 times a day
3 types of blood vessels:
Arteries – Carry blood away from the heart
Veins – Carry blood towards the heart
Capillaries – tiny vessels that exchange gases and other substances between the vessels and cells

12. Label the heart Left Atrium Right Atrium Left Ventricle
Right Ventricle

13. Blood Types A B AB O 42 10 4 44 A or O B or O All of them O only
% of population
42  10 4 44
Can be received
A or O 
B or O
All of them
O only
Can donate
A or AB
B or AB
AB Only
4 Parts of Blood
Plasma
Platelets
Red Blood Cells
White Blood Cells

14. Lymphatic System Job Removes excess fluid from around organs Job
Produces white blood cell
Job
Transports fats

15. Lymphatic system Major Organs Fun Fact
Spleen, tonsils, lymph nodes, thymus, lymph vessels
Fun Fact
You are 65% water
You have 500 lymph nodes
3 lines of Defense
1st line = skin and mucus
2nd line = White Blood Cells (Lymphocytes) attack and destroy harmful substances
3rd line = protection against future substances in the form of antibodies.

16. Infectious vs. noninfectious
caused by pathogens such as a bacteria or virus
Usually contagious
Examples are the flu, colds, strep throat, chicken pox
Noninfectious
caused by the environment or a genetic disorder
Not contagious
Examples are cancer, diabetes, heart disease, allergies

17. Fun Fact An adult has 206 bones
Skeletal System
Fun Fact An adult has 206 bones
Major organs
Bones, tendons, ligaments

18. Skeletal System Job Job Protects vital organs
Provides support
Job
The bone marrow inside your bones makes red blood cells
Some bones store fat and minerals

19. Types of bone Compact bone Spongy bone
Hard outer layer of bone
Spongy bone
Interior region of bone that contains may holes.

20. Muscular System 3 Types of Muscles Job Major Organs Help you move
Cardiac
Heart muscle
Skeletal
Works with your bones so you can move
Smooth
Muscles that move material through your body

21. Muscular and Skeletal System
How does your muscular system work with your skeletal system?
Your muscles attach to your bones by tendons. When the muscle contracts it pulls the bone which causes movement.

22. Nervous System Job Detects, processes and responds to information.
Major Organs Brain, Spinal Cord and Nerves

23. Nervous System What is a neuron? The basic unit of the nervous system
5 Senses
Jobs
Visual
Receives light signals
Auditory
Detects sound
Olfactory
Receives odor signals
Touch
Sensory receptors- outside world
Taste buds
Receives chemical signals
What is a neuron?
The basic unit of the nervous system

24. Central vs Peripheral Nervous System
Includes the brain and spinal cord
Processes the information and send messages to the peripheral to respond
Peripheral
Includes the nerves
Sends information from the body to the brain for processing.

25. Voluntary Vs. Involuntary
You control
Examples: reading, writing, walking, talking
Involuntary
Automatic Responses
Examples: breathing, digestion

26. Endocrine System Major Organs Job
Hypothalamus, Thyroid, Thymus, Pituitary gland, adrenal gland, pancreas
Job
To send chemical signals throughout the body
Hormone Travel time: Head to toes in 20 s
Nervous System Travel Time : Head to toes in 1 s

27. Explain how it maintains homeostasis
Hormones
Name a hormone
Explain how it maintains homeostasis
Parathyroid Hormone
Works with skeletal system to control calcium
Insulin
Works with digestive system (pancreas) to release signals for nutrients
What is a hormone
Chemical signals released by glands