Friday April 7th, 2017

Today you need• Notebook• Something to write with• Body outline• Glue• Scissors

Objective• Identify the major

organs of each human body system

• Describe the primary function of each body system

Human Body SystemsHuman Body Systems

An Introduction

• There are ~ 100 trillion cells in the human body

• Each cell works both independently and as part of the larger body system

How does the body get so many cells to work together?

Organization•Cells tissues organs organ systems

• Cells Cells –specialized to perform certain functions

• Tissues – groups of similar cells that work together

• 4 basic types of tissues in humans:– Epithelial (skin)– Connective (bone, cartilage)– Nervous (neurons)– Muscle

• Organs – groups of different tissue types that work together

• Organ Systems – a group of organs that perform closely related functions

Comparisons• We compared a cell to a factory.• Let’s compare human body systems to…a

football team or a track team• So one cell would be like: _____________• Tissues would be like: ____________• Organs would be like: ____________• Organ systems would be like: __________

• There are 11 organ systems in the human body

• They all work together to maintain homeostasis

• Integumentary System:– skin– Protects the body – regulates temperature inside the body

Label the skin on Nelly

• Respiratory System:– nose, trachea, lungs– Brings in O2 and releases

CO2

Label the lungs and trachea on Nelly

Human Body Systems

• Digestive System:– mouth, esophagus,

stomach, intestines– Digest food and absorb

nutrients, eliminate waste

Label the stomach on Nelly

• Excretory/UrinarySystem:

– kidneys, bladder– Eliminates waste

Label the kidneys and bladder on Nelly

• Skeletal System:– bones, cartilage, ligaments,

tendons– Supports the body, protects

organs

Label the femur on Nelly

• Muscular System:– skeletal, smooth, and

cardiac muscle– produce movement

Label the deltoid on Nelly

• Circulatory System:– heart, blood vessels,

blood– Brings needed materials to

cells and removes waste from cells

Label the heart, major arteries and veins on Nelly

• Endocrine System:– glands – Controls growth and

development

Label the thyroid gland on Nelly

• Reproductive System:– reproductive organs – Produces sperm or ova

Label the pituitary gland on Nelly

• Immune System:– white blood cells– Protects the body

from disease

Label the bone marrow on Nelly

• Nervous System:– brain, spinal cord, nerves– Recognizes stimuli and

helps the body respond

Label the brain and spinal cord on Nelly

Directions1. Assemble Human Body

Systems book2. For each body, draw the

major organs of the system

3. Fold the body in ½4. On the outside write the

name of the system5. Underneath the body

write the major function(s) of that system

1. Respiratory + Circulatory2. Digestive3. Immune4. Nervous5. Endocrine/Reproductive6. Muscular/Skeletal7. Integumentary/Urinary

Human Body Systems Book

Human Body Systems Book

Nervous system Skeletal

system

Human Body Systems Book

Human Body Systems Book

Function: