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Capter 4 Mod 1
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Question | Answer |
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Skeletal system | Consists of 206 bones in an adult. |
Muscular system | Consists of skeletal, smooth and cardiac muscles. |
Cardiovascular system | Consists of the heart, blood vessels, and blood. |
Lymphatic/Immune system | Consists of the lymph, lymph nodes and vessels, white blood cells, spleen, tonsils, and lymphocytes. |
Nervous system | Consists of the brain, spinal cord, and peripheral nerves. |
Respiratory system | Consists of the nose, sinuses, larynx, epiglottis, trachea, and lungs, including lung structures such as the bronchus, bronchioles and alveoli. |
Digestive system | Consists of the oral cavity, esophagus, pharynx, stomach and the small and large intestines. |
Endocrine system | Consists of the thymus, gonads, pituitary, thyroid, pancreas, and adrenal glands. |
Long bones | Located in the upper and lower extremities. |
Sesamoid bones | Small floating bones found near joints. |
Irregular bones | Vary in shape, size, and surface traits. |
Flat bones | Have broad surfaces that protect the organs and serve as attachment areas for muscles. |
Short bones | Small and cube shaped and are found in the wrists and ankles. |
Compact bone | Is known as hard bone due to its density and strength. |
Cancellous bone | Known as spongy bone, is less dense and is lighter in weight than compact bone. |
Muscle origin | The location where the muscle attaches to the bone originally, and it is fixed or nonmoveable. |
Muscle mass | This composes 40%-45% of a human's body weight. |
Striated Muscles | Long cylindrical fibers that are arranged parallel to each other. |
Smooth muscles | Produce involuntary movements such as breathing and digestion. |
Cardiac muscles | Resembles the striated muscle tissue, but it conducts electricity, it lacks elasticity, and its movement is involuntary. |