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Oranda Cisneros
Physiology Week 1-6
| The maintenance of relative constant internal conditions despite changes in either the internal or external environment | Homeostasis |
| Negative feed-back mechanisms: | Minimize changes in blood glucose levels, Maintain homeostasis, Are responsible for an increased rate of sweating when air temperature is higher than body temperature |
| What are the basic components in a feedback control loop? | Effector mechanism, Sensor, Integrating center |
| Of the pathogenic organisms, which are the most complex? | Tapeworms |
| A saturated fatty acid is one in which | All available bonds of its hydrocarbon chain are filled |
| The carbon-containing molecules formed by living things are often called | Organic molecules |
| Which lipid is part of vitamin D? | Steroids |
| What is the most important factor in determining the physical and chemical properties of fatty acids? | Degree of saturation |
| Osmosis can be defined as | The net movement of water molecules from a region of lower solute concentration to a region of higher solute concentration |
| Glycolysis occurs in what part of the cell? | Cytoplasm |
| Meiosis is called "reduction division" because | The number of chromosomes is divided by half |
| Phagocytosis is an example of: | Endocytosis |
| An individual's entire set of DNA can be referred to as: | Genome |
| which skin layer has cells that look prickly because of the desmosomes that join the cells together? | Stratum spinosum |
| Which skin layer is called the barrier are? | Stratum corneum |
| Which cells help destroy pathogens and damaged tissue in the brain? | Microglia |
| Which cells electrically insulate axons to increase the speed of conduction? | Oligodendrocytes and Schwann cells |
| The papillary layer of the dermis: | Produces the ridges that make fingerprints |
| Provides framework for muscles that anchor and stabilize the appendicular bones | Axial skeleton structure |
| The fontenelles of an infant's skull consist of | Fibrous membrane |
| The cell organelles that synthesize organic matrix substances in bone formation are: | Endoplasmic reticulum and Golgi apparatus |
| Blood calcium levels involve secretion of which two hormones? | Parathyroid and calcitonin |
| As the activity of osteoblasts increases, the: | Amount of calcium in bone increases, Level of calcium in the blood decreases |
| Calcification of the organic bone matrix occurs when | Complex calcium salts are deposited in the matrix |
| A shoulder joint is an example of a ___ joint. | Multiaxial, Freely movable, Ball and socket, |
| According to the sliding filament theory | Actin moves past myosin |
| Some synovial joints contain a closed pillow-like structure called a(n) | bursa |
| The phases of the twitch contraction are the | latent period, contraction phase, and relaxation phase |
| Joints joined by fibrocartilage are called | Symphyses |
| The four types of protein that make up myofilaments are myosin, actin, | Tropomyosin and troponin |
| An example of a hinge joint is(are) the: | Interphalangeal joints |
| Cross-bridges are also called: | Myosin heads |
| Which type of muscle does not have T-tubules? | Smooth |
| Which type of muscle is responsible for peristalsis? | Single-unit smooth |
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