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Anatomy Week 1-5
| Term | Definition |
|---|---|
| Anatomical Regions | Specific areas of the body like the antebrachial (forearm), crural (leg), or thoracic (chest) region. |
| Median Plane | Another term for the midsagittal plane that divides the body into equal left and right halves. |
| Frontal (Coronal) Plane | A vertical plane dividing the body into anterior (front) and posterior (back) parts. |
| Transverse (Horizontal) Plane | A horizontal plane dividing the body into superior (top) and inferior (bottom) parts. |
| Proximal vs. Distal | Proximal means closer to the trunk or point of origin; distal means farther from it. |
| Superficial vs. Deep | Superficial refers to structures closer to the skin surface; deep refers to structures further inside. |
| Visceral vs. Parietal Layers | Visceral layer covers organs; parietal layer lines the walls of body cavities. |
| Synovial Joint | A freely movable joint characterized by a fluid-filled joint cavity (e.g., knee, elbow). |
| Osteocyte | mature bone cell that maintains the bone matrix. |
| Compact Bone vs. Spongy Bone | Compact bone is dense and solid; spongy bone is porous and found inside bones. |
| Red Bone Marrow | Tissue found within certain bones responsible for producing blood cells. |
| Muscle Fiber | A single muscle cell, multinucleated and composed of myofibrils. |
| Sarcomere | The basic contractile unit of a muscle fiber, composed of actin and myosin filaments. |
| Tendon vs. Ligament | Tendons connect muscle to bone; ligaments connect bone to bone. |
| Nervous Tissue | Tissue responsible for transmitting electrical signals throughout the body |
| Dendrites | Branch-like extensions of neurons that receive signals. |
| Axon | The long projection of a neuron that transmits impulses away from the cell body. |
| Epiphyseal Plate | The growth plate in long bones where new bone is formed during childhood and adolescence. |
| Periosteum | A dense layer of vascular connective tissue enveloping bones except at the surfaces of joints. |