1. Human Body Systems
Unit 14
10A

2. Functions of Each System
Nervous – response
Digestion – nutrients
Integumentary – (skin) protection
Excretory – waste
Endocrine – (hormones) homeostasis
Skeletal – support
Muscular – movement
Reproductive – reproduction
Circulatory – transportation
Immune – (lymphatic) disease protection
Respiratory – gas exchange

3. Nervous System Organs: brain, spinal cord, peripheral nerves
Function: recognizes and coordinates the body’s response to changes in its internal and external environments

5. Lymphatic/Immune System
Organs: white blood cells, thymus, spleen, lymph nodes, lymph vessels
Function: helps protect the body from disease; collects fluid lost from blood vessels and returns the fluid to the circulatory system

7. Endocrine System
Organs: hypothalamus, pituitary, thyroid, parathyroids, adrenals, pancreas, ovaries (females), testes (males)
Function: controls growth, development, & metabolism; maintains homeostasis

9. Integumentary System Organs: skin, hair, nails, sweat, and oil glands
Function: serves as a barrier against infection and injury; helps to regulate body temperature; provides protection against ultraviolet radiation from the sun

11. Skeletal System Organs: bones, cartilage, ligaments, tendons
Function: protects organs, aids in movement, provides structure

13. Muscular System Organs: skeletal muscle, smooth muscle, cardiac muscle
Function: works w/ skeletal system to produce voluntary movement; helps to circulate blood and move food through the digestive system

15. Digestive System
Organs: mouth, pharynx, esophagus, stomach, small & large intestine; rectum
Function: converts foods into simpler molecules that can be used by the cells of the body; absorbs food; eliminates wastes

17. Excretory System
Organs: skin, lungs, kidneys, ureters, urinary bladder, urethra
Function: eliminates waste products from the body in ways that maintain homeostasis

19. Circulatory System Organs: heart, blood vessels, blood
Function: brings oxygen, nutrients, and hormones to cells; fights infection; removes cell wastes, helps to regulate body temperature

22. Respiratory System
Organs: nose, pharynx, larynx, trachea, bronchi, bronchioles, lungs
Function: provides oxygen needed for cellular respiration and removes excess carbon dioxide from the body

24. Reproductive System
Organs: males – testes, epididymis, vas deferens, urethra, penis
females – ovaries, fallopian tubes, uterus, vagina
Function: produces reproductive cells; females – nurtures & protects developing embryo