Human Organ Systems Skin Integumentary Sensory organ Regulate

Human Organ Systems

Skin - Integumentary • Sensory organ • Regulate water loss • Regulate temperature • Protect from UV light (melanin).

Cardiovascular • Moves oxygenated blood to the body and non-oxygenated blood to the heart. • Provides nutrients to the body’s tissues.

Digestive • To help the body extract nutrients from food. • Cilia found in the small and large intestines to increase surface area (absorption).

Endocrine • Releases hormones into the blood stream to maintain homeostasis. • Controls growth, reproductive maturity, reactions to experiences.

Excretory • Removal of waste products from the body. • Kidneys: The body’s janitor.

Immune • Protection from disease (bacteria or virus) • Specific defenses – white blood cells. • Non-specific defenses – skin, mucus, hair, cilia, acids, tears.

Muscular • Help with movement. • Generate heat for the body. • Help with pumping blood (cardiac) and with digestion (smooth).

Nervous • Central nervous system – brain/spinal cord • Peripheral nervous system – all other neurons. • Allows for input of external/internal stimuli.

Respiratory • Provides oxygen to lungs. • Cleans the air • Controlled by diaphragm.

Skeletal • Protect organs, brain. • Allow for muscles to pull/push – movement. • Produce Red blood cells. • Stores fat and minerals (calcium).

Negative Feedback System • Thermostat in your house is an example. • The amount of hormone (or a product) determines how much longer than hormone will be released into the system.