body systems:

integumentary system

functions

• Helps the body maintain homeostasis
• Prevents potential:
• Injuries
• Infections
• Fluid losses

Skin

• Protect internal organs from bacteria and pathogens or injury
• Storage center for lipids and water
• Regulate body temperature by radiation, conduction, convection, evaporation
• Sensation of touch, cold, heat, pain

Nails

• Protect the distal phalanx(finger tip) from injury
• Enhances precise delicate movements of the distal digits through pressure
• Enhances the sensitivity of the finger tip through counter-pressure
• Funtions as a tool (extended precision grip) exp pulling out splinters

Hair

• Redirects sweat and water 
• Insulation and protection from various external factors
• Keeping dust out of the ears canals, eyes, nose
• Keeps the body warm by trapping heat

the immune system

• White blood cells
• Lymph nodes
• Lymph vessels

What is the function of the immune system?

White blood cells

• Destroys bacteria, viruses, and toxic proteins
• Helps body develop immunities
• Defends body against diseases

lymph nodes help defend the body against:

• Bacteria
• Viruses
• Infectious microbes
• Cancer

lymph vessels

Both systems defend the body.

The immune system protects the body from internal invaders.

The integumentary system prevents external invaders.

disorders

• Swollen lymph nodes
• Skin cancer
• Allergies

Swollen lymph nodes: sometimes lymph nodes become tender and swell up while fighting infections.

Allergies

Skin cancer

• Spots on skin
• Caused by too much exposure to sun
• Can also be caused by radiation/ X rays