The Human BodyBody Organization

What do you do when it is cold outside? When it is hot?

◦ Shiver or sweat

Homeostasis is the maintenance of a stable internal environment

◦ Your body systems work together to ensure that your body maintains a stable internal environment

Homeostasis

Body Organization

◦ Cells

◦ Tissues

◦ Organs

◦ Organ Systems

◦ Organism

Body Organization

We are multicellular organisms◦ We are made up of over 1 trillion cells

We have many different types of cells◦ Examples: Blood cells, muscle cells, bone cells

Every cell has a specific job it carries out

Types of Cells

Epithelial◦ Covers and protects underlying tissue

Nervous◦ Sends electrical messages throughout the body

Muscle◦ Contracts and relaxes to produce movement

Connective◦ Joins, supports, protects, and cushions bones

(joints)

Types of Tissues

Two or more tissues working together◦ Examples: Heart, lung, kidney, brain

Organs

The Body Systems

The integumentary system includes your skin, hair, nails – these protect underlying tissue

Integumentary System

Your muscular system works with the bones in the skeletal system to help you move

You have over 800 muscles in your body!(of the 800, about 650 just move bones)

Muscular System

The skeletal system provides a frame to support and protect your body parts

The skeleton contains 206 bones and weighs about 20 lbs(you actually have over 300 bones at birth but some fuse together as you grow)

Skeletal System

The cardiovascular system pumps blood through all of your blood vessels

Cardiovascular System (aka circulatory)

The nervous system receives and sends electrical messages throughout the brain and body

Nervous System

The lymphatic system returns leaked fluid to blood vessels and helps get rid of germs that can harm you

Lymphatic System (aka immune system)

The digestive system breaks down food into nutrients that can be absorbed by the body

Digestive System

The endocrine system contains glands that regulate body functions by sending out chemical signals (aka hormones)

Endocrine System

The respiratory system allows the body to absorb oxygen and release carbon dioxide

Respiratory System

The urinary system effectively removes wastes from the blood and regulates fluids

Urinary System

Male◦ The male reproductive system produces and

delivers sperm

Female◦ The female reproductive system produces eggs

and can hold unborn babies

The Reproductive System

You will be creating a Human Body Booklet

In order to find the information to fill this booklet you will be using textbooks and the literacy library books along with activities associated with each system

You and your desk partner will be working together on the same system at the same time

Project Time!

You will have 5 days to complete your booklets (you will need to average 2 systems per class period)

This will count as a grade and your study guide for your human body quiz

Project Time cont…