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Human Body Systems
Facts
| Term | Definition |
|---|---|
| Body Organization Levels (smallest to largest unit) | Cells - Tissues - Organs - Organ Systems |
| Tissues | Groups of cells that are alike in structure that perform a specific function |
| Organs | Groups of different tissue types working together to perform a specific function |
| Organ Systems | Groups of organs working together to perform a specific function |
| The brain is what level of organization? | Organ |
| Muscles are what level of organization? | Tissues |
| Neurons are what level of organization? | Cells |
| Skeletal System Function | Provides structure and support, allows for movement, protects vital organs, creates blood cells |
| Muscular System Function | Provides movement and allows for reaction to environmental conditions |
| Circulatory System Function | Carries needed materials (oxygen, glucose, waste products) to and from body cells and transports disease fighting cells |
| Respiratory System Function | Moves oxygen into the body into the body and removes carbon dioxide and excess water from the body |
| Digestive System Function | Breaks down food into useable molecules, provides a location for molecule absorption, and helps prepare the body's waste |
| Excretory System Function | Collects and rids the body of cellular waste in liquid form |
| Nervous System Function | Receive environmental information and directs a response if necessary; helps maintain homeostasis |
| Immune System Function | Eliminate pathogens that attack body cells |
| Voluntary Muscles | Muscles that are under our control |
| Involuntary Muscles | Muscles that work automatically |
| Voluntary Muscle Example(s) | Skeletal muscles |
| Involuntary Muscle Example(s) | Digestive (smnooth) and cardiac muscles |
| Site of most mechanical digestion | Stomach |
| Site of most chemical digestion | Small intestines |
| Major organs and tissues of the skeletal system | Bones, cartilage, ligaments, and marrow |
| Major organs of the muscular system | Skeletal muscles, smooth muscles, cardiac muscles |
| Major organs of the digestive system | Mouth, esophagus, stomach, small intestines, and large intestines |
| Major organs of the respiratory system | Nose, trachea, and lungs |
| Major organs of the excretory system | Kidneys, ureters, urinary bladder, urethra |
| Major organs of the nervous system | Brain, spinal cord, neurons |
| Major organs of the immune system | Lymphocytes (white blood cells) |
| Bones in the back that protect the spinal cord | Vertebrae |
| Process for muscle pairs to provide movement | One contracts while one relaxes |
| The largest bone in the human body | Femur |
| The largest organ of the human body | Skin |
| The sensory organs that allow us to see | Eyes |
| The other name for the lymphatic system | Immune |
| The two pairs of muscles that make up the majority of our chest | Pectoralis |
| The four pairs of muscles that make up the majority of our thigh | Quadriceps |
| All the muscles in our lower arm that bend and extend our fingers and wrist | Flexors and extensors |
| The funny name for the muscle in the back of our lower leg. Also called the calf muscle. | Gastrocnemius |
| The simple name for this bone is the upper arm bone or funnybone. | Humerus |
| The simple name for the cranium | Skull |
Created by:
PRO Teacher
jchavez45
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