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Maria Armas
Anatomy wks 1-5
| Question | Answer |
|---|---|
| What are the levels of organization in the human body, from simplest to most complex? | Chemical → Cellular → Tissue → Organ → Organ system → Organism |
| What are the four most common elements in the human body? | Oxygen (O), Carbon (C), Hydrogen (H), and Nitrogen (N) |
| What are the three main parts of a cell? | Plasma membrane, cytoplasm, and nucleus |
| What does the cell theory state? | All living things are made of cells; cells are the basic unit of life; all cells come from pre-existing cells. |
| What are the major functions of the integumentary system? | Protection, temperature regulation, sensation, vitamin D synthesis, and excretion |
| What are two major layers of the skin? | Epidermis (outer) and dermis (inner) |
| What are the major parts of the axial skeleton? | Skull, vertebral column, and rib cage (thoracic cage) |
| What bones are included in the appendicular skeleton? | Limbs (arms & legs), pectoral girdle (shoulders), and pelvic girdle (hips) |
| What is the origin and insertion of a muscle? | Origin is the fixed attachment; insertion is where the muscle moves during contraction. |
| What is the difference between voluntary and involuntary muscles? | Voluntary muscles (skeletal) are under conscious control; involuntary muscles (smooth & cardiac) are not. |