Question | Answer |
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 |