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William muwaya
Physiology week 1-6
| Question | Answer |
|---|---|
| Define homeostasis | The maintenance of a stable internal environment |
| Negative feedback loop | Change back to the original state, encourages the reaction to stop. |
| Homeostatic mechanisms help regulate? | Body temperature & blood pressure. |
| Monosaccharide | A single sugar molecule such as glucose or fructose, the simplest type of sugar; monomer of complex carbohydrates |
| Disaccharide | A sugar formed from two monosaccharides joined by dehydration synthesis |
| steroid | Lipid with a backbone of four fused carbon rings. Ex. Cholesterol, testosterone, estrogen. |
| Diffusion | -Molecules spread through the membranes -From a high concentration to a low concentration down a concentration gradient -As molecules diffuse, a state of equilibrium occurs |
| isotonic | when two fluids have the same osmotic pressure |
| hypertonic (higher pressure) | Cells placed in solutions that are hypertonic to intracellular fluid always shrivel as water flows out of them |
| Tissue | Collection of similar cells that act together to perform a function |
| Squamous tissue | Flat and scale-like usually found in the lungs |
| Synovial Membrane | Found at joint sited to aid in reducing friction and keep joints smooth |
| Skeletal Cartilages | Are made from cartilage surrounded by a layer of dense irregular connective tissue called the perichondrium |
| The axial skeleton includes: | Skull, vertebral column, and rib cage |
| The appendicular skeleton includes: | Bones of upper and lower limbs, and the girdles that attach them to the axial skeleton |
| Articulation | A point of contact between 2 or more bones, between bone and cartilage, or between teeth and bone |
| why are articulations necessary? | Bones are immobile and can only move at joints; structure of joint determines type and amount of movement |
| bony fusion (anatomical) | Immovable, 2 bones fused into 1 e.g sacrum , coccyx; strongest joints |
Created by:
kwagala
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