Cardiac muscle cells generating electrical impulses without nervous system input.
automaticity
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| Term | Definition |
|---|---|
| Cardiac muscle cells generating electrical impulses without nervous system input. | automaticity |
| The renal tubule (PCT, loop of Henle, DCT, and collecting duct pathway) carries filtrate away from the glomerulus and performs reabsorption and secretion to adjust the filtrate into urine | renal tubule |
| DNA wrapped around proteins (histones) and appears as thin, threadlike material when the cell is not dividing. During cell division, chromatin condenses to form chromosomes | chromatin |
| How a cell moves substances from low concentration to high concentration (against the concentration gradient), which requires energy (ATP). It uses transport proteins (pumps) in the cell membrane. Classic example: the sodium-potassium pump, which moves Nat out of the cell and K* in of the cell using ATP | active transport |
| A column of erectile tissue in the penis that surrounds the urethra and runs along the underside of the penis. Keeps the urethra open during erection so semen (and urine) can pass through; Forms the glans penis (the enlarged tip) at the distal end | corpus spongiosum |
| A special type of cell division that makes sex cells (gametes) sperm and eggs. The parent cell splits its supply of 46 chromosomes between two daughter cells, resulting in two cells with 23 chromosomes each. Because homologous chromosomes in the parent cell exchange genetic information before separating, the daughter cells are genetically unique. | meiosis |
| the plane that divides the body into left an right portions | sagittal |
| the kidney lies against the | posterior |
| the heart is located in the | thoracic |
| the slit where structures enter and leave the kidney is called | hilum |
| the dorsal body cavity contains the what cavities | cranial and spinal |
| cells powerhouse | mitochondria |
| outter layer of skin that receives nutrients by diffusion | epidermis |
| forms the bulk of the plasma membrane | phospholipids |
| tissue type defined by an extracellular matrix | connective tissue |
| skin layer containing blood vessels | dermis |
| red bone marrow is in what | children |
| yellow bone marrow is in what | adults |