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Maintenance of relatively stable internal body conditions even though outside conditions change Homeostasis
Examples of Homeostasis Body temperature, heart rate, oxygen level, blood pressure, sugar level/glucose, water, sodium, potassium
When are variations from the normal range necessary? When we exercise-- the body makes changes for higher heart rate
3 basic components of feedback control Receptor, Control center, and Effector
Stimulus produces response which is in opposite direction to the stimulus Negative feedback
Stimulus produces response which is in the same direction as the stimulus Positive feedback
Examples of Negative feedback Body temperature regulation; sugar level in blood regulation
Examples of Positive feedback Labor contractions; blood clotting
8 characteristics of life Organization; Maintaining boundaries; Movement; Responsiveness; Metabolism; Reproduction; Growth; Development
Integumentary System Skin, hair, nails, and sweat glands
Skeletal System Bones, associated
Muscular System Consists of muscles attached to the skeleton by tendons
Lymphatic System Lymphatic vessels, lymph nodes, and other lymphatic organs
Respiratory System Lungs and respiratory passages
Digestive System Mouth, esophagus, stomach, intestines, and accessory organs
Nervous System Brain, spinal cord, nervous, and sensory receptors
Endocrine System Glands, such as the pituitary, that secretes hormones
Cardiovascular System Heart, blood vessels, and blood
Urinary System Kidneys, urinary bladder, and ducts that carry urine
Female Reproductive System Ovaries, vagina, uterus, mammary glands, and associated structures
Male Reproductive System Testes, accessory structures, ducts, and penis
Created by: stoeckee