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Physiology week 1-6
| Question | Answer |
|---|---|
| Homeostasis | stability, balance, or equilliium w/in the cell or the body. |
| affarent | signal travel towards a particular center point of reference |
| Polysaccharides | long chains of glucose, used for energy storage |
| steroids | lipids with a ring structure (cholesterol, hormone) |
| DNA + Nucletides | What is it? DNA stores genetic information; nucleotides used as building blocks Nucleotides- sugar and phosphate and nitrogen base Nitrogen base distinguishes nucleotides (A,T,G,C,U) |
| Cell transportation | What is it? movement of materials across membrane passive: diffusion (high to low) osmosis (water low to high solute) active: endocytosis and phagocytes (ATP required) hypertonic: cells shrink |
| Astrocytes | blood- brain barrier cells |
| hematopoietic tissue | found in bones (red bone marrow) |
| epiphyseal plates (growth plates) | bones that grow with activity |
| fontanelles | allows overlap at birth, allow brain growth, closes at 2 y/o |
| bursa | fluid filled sac reducing friction between bones , tendons, or muscle found in shoulder, knee, elbow |
| slidding filament theory | movement: actin moves past myosin during contraction result: sarcomere shortens, producing tension |