1. Human Body Systems Group #1 - Support
The Skeletal System
The Muscular system
The Integumentary System (Skin)

2. The Skeletal System - Functions
provides shape & support for body
protects internal organs
provides movement
produces blood cells
stores calcium and phosphorus

3. The Skeletal System - Structures
Cells = bone marrow (hollow area of long bones) produces blood cells
Tissues = connective tissue
ligaments attach bones to other bones
Organs = humans have an internal skeleton (endoskeleton) made of 206 bones

4. The Skeletal System - Interactions
Muscular = works with muscles to move the body
Nervous & Senses = responds to the commands of the nervous system to move including voluntary motion, involuntary motion and reflexes
Cardiovascular & Immune = bone marrow produces red blood cells, white blood cells, and platelets
Lymphatic = movement of the body pumps the lymphatic system

5. The Muscular System - Functions
provides movement
supports internal organs
regulates body temperature
muscles generate heat
example: you shiver to keep warm

6. The Muscular System - Structures
Cells = are able to contract, stretch, and then regain shape
Tissues = muscle tissue
striated (skeletal muscle tissue)
smooth (internal organ muscle tissue)
cardiac (heart muscle tissue)
Organs = muscles, tendons (connect bones and muscles)

7. The Muscular System - Interactions
Skeletal = works with bones to move the body
Nervous & Senses = responds to the commands including voluntary motion, involuntary motion, and reflexes
Digestion = chewing, swallowing, and grinding food in stomach
Cardiovascular = the heart circulates the blood carrying nutrients to the body
Respiration = the diaphragm helps the lungs inhale and exhale
Lymphatic = movement of the body pumps the lymphatic system

8. The Integumentary System – Skin Functions
protection of body
sensory response to environment
makes vitamin D that helps absorb calcium
regulates body temperature (sweating to release heat)
excretes wastes

9. The Integumentary System – Skin Structures
Cells = full of keratin protein; very elastic
Tissues = connective tissue
Epidermis (top layer, produces new skin)
Dermis (bottom layer contains nerves, glands, insulating fat, and melanin)
Organs = skin is the body’s largest organ

10. The Integumentary System – Skin Interactions
Immune =
holds in important nutrients and fluids
helps keep out bacteria and viruses
regulates temperature (fat insulates and sweat gland remove heat)
Excretory = sweat gland in the skin remove water and other substances
Nervous & Senses – responds to surroundings