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28 Cards in this Set
- Front
- Back
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From smallest to largest, how is the human body structured? |
cells<tissues<organs<systems |
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cells |
Smallest units of life |
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What is the basic structure of a cell? |
Cell membrane, cytoplasm, nucleus |
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Cell membrane |
Maintains integrity of the cell and controls passage of materials into and out of the cell |
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Nucleus |
Control center of the cell that determines how the cell will function as well as its basic structure |
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Cytoplasm |
Gel like fluid inside the cell that provides a medium for chemical reaction and a platform upon which organelles can operate |
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Organelles |
"Little organs" suspended within the cytoplasm that have specific roles in the cell's function |
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5 major types of cells |
Bone, blood, muscle, skin, nerve |
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Epithelial tissues |
Cover surfaces and line cavities |
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Functions of epithelial tissues |
Protection, secretion, absorption, excretion, filtration, diffusion, sensory reception |
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Shapes of epithelial cells |
Squamous, cuboidal, columnar |
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Connective tissues |
Hold the body together |
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Types of connective tissue |
Blood, osseous, cartilage, adipose, fibrous |
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Muscular tissues |
Allow body movement |
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Nervous tissues |
Conducts nervous impulses |
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What makes up a body system? |
Groups of organs that work together for a specific purpose |
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Integumentary system |
Skin, hair, sweat, and sebaceous glands that work together to form protective coverings |
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Musculoskeletal system |
Muscle and bones that work together for movement, body framework, and organ support |
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Blood and lymphatic system |
Carry oxygen (et. al.) throughout the body and fight infection |
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Cardiovascular system |
Heart and blood |
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Gastrointestinal system |
Transports food, absorbs nutrients, excretes waste |
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Five body cavities |
Cranial, spinal, thoracic, pleural, abdominal |
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Cranial cavity |
Houses the brain; surrounded by the cranium (skull) |
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Spinal cavity |
Houses the spine, surrounded by vertebrae |
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Thoracic cavity |
Houses the heart and lungs, surrounded by ribs, sternum, and vertebrae. |
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Mediastinum |
(May-dee-uh-STY-num) Space between the lungs, located in the thoracic cavity |
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Pleural cavity |
Space within the pleurae that surround the lungs |
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Abdominal cavity |
Houses stomach, liver, and intestines. |
