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Physio Study Stack 1
| Term | Definition |
|---|---|
| Homeostasis | Relative constancy of the normal body's internal (fluid) environment |
| Negative feedback | Feedback control system in which the level of a variable is changed in the direction opposite to that of the inital stimulus |
| Positive feedback | Feedback control system that is stimulatory; tends to amplify or reinforce a change in the internal environment |
| Adenosine Triphosphate | Chemical compound that provides energy for use by the body cells |
| High-energy bond | Chemical bond that requires an input of energy to form and when broken can result in the transfer of useful energy to cellular processes as in ATP |
| Cellular Respiration | Set of biochemical reactions of a cell that transfer energy from nutrient molecules to ATP molecules |
| Allosteric effector | An agent that alters the function of an enzyme by changing the shape of the enzyme's active site |
| Cytokinesis | Process by which a dividing cell splits its cytoplasm and plasma membrane into two distinct daughter cells; cytokinesis happens along with mitosis (or meiosis) during the cell division process |
| RNA interference | A regulatory process of the cell in which a small molecule of dsRNA (double-stranded RNA) called siRNA (small interfering RNA) joins with a RISC (RNA-induced silencing complex) protein structure to break down a specific mRNA (messenger RNA) transcript. |
| Connective Tissue | Most abundant and widely distributed tissue in the body |
| Epithelial Tissue | Tissue type that covers the body and its parts; lines various parts of the body; forms continuous sheets that contain no bloos vessels; classified according to shape and arrangement |
| Elastic Cartilage | Cartilage with elastic, as well as collagenous fibers; provides elasticity and firmness as in, for example, the cartialge of the external ear |
| Articular Cartilage | Layer of hyaline cartilage covering the joint surfaces of the epiphyses |
| Appendicular Skeleton | Bones of the upper and lower extremities of the body |
| Axial Skeleton | Bones of the head, neck, and torso |
| Femur | Thigh bone |
| Transverse arch | Curve of foot from medial to lateral that helps stabilize the foot's support of the body's weight |
| Abduction | Moving away from the midline of the body; opposite motion of adduct |
| Adduction | Moving toward the midline of the body; opposite motion of abduction |
| Acetylcholine | Type of neurotransmitter used by motor neurons at neuromuscular junctions to stimulate muscle contraction at or in some autonomic synapses (in ganglionic synapses, at all parasympathetic effectors, at some sympathetic effectors) |
| Creatine Phosphate | Susbtance found in muscle cells and used for the temporary storage of chemical energy to supply ATP and ultimately for muscle contraction |
Created by:
rochellename
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