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Introduction To Health Sciences Vocab

Subject : health-sciences
Instructions:
  • Answer 50 questions in 15 minutes.
  • If you are not ready to take this test, you can study here.
  • Match each statement with the correct term.
  • Don't refresh. All questions and answers are randomly picked and ordered every time you load a test.

This is a study tool. The 3 wrong answers for each question are randomly chosen from answers to other questions. So, you might find at times the answers obvious, but you will see it re-enforces your understanding as you take the test each time.
1. Condition in which no colour at all can be seen.






2. The build-up of levels of a chemical contaminant in the bodies of animals at successive levels in a food chain.






3. A process at an interface of two media in which the direction of light is deviated within the new medium.






4. Negatively charged particle of almost no mass that surround the nucleus of an atom.






5. A process in which light passes through a medium unaffected - e.g. light passing through clear glass.






6. A type of cell that is responsible for contraction in skeletal muscle tissue. They are long and thin and have many nuclei. (Also known as muscle fibre)






7. Bonding Which is due to the electrical attraction of equal and opposite electrical charges and which holds the ions in salt crystals together.






8. An excessive engagement in an activity despite negative consequences and a dependence upon the activity such that when access is denied - craving and withdrawal symptoms are seen. Most usually refers to dependency on a chemical substance but need not






9. Colours on opposite sides of the colour circle.






10. The skin layer that lies beneath the epidermis and provides the strength and elasticity of the skin.






11. Haemoglobin bound to oxygen molecules. Transports oxygen from blood vessels in the lungs to the cells in the rest of the body.






12. An outbreak of an infectious disease in a community - region or country - characterised by a sharp increase in the number of cases - followed after an interval by a decline to a normal level






13. A sudden change in potential difference (voltage) across the cell membrane of neurons - consisting of an increase in the resting potential and a sudden return to the resting value. Transmitted along axons and constitute the principal 'language' of co






14. The level of intensity of stimulation of a neuron at which it first shows activity. The term is used particularly in the context of sensory neurons.






15. A study in which neither the participants (e.g. patients) nor the experimenters (e.g. therapists) know into which group the participants have been allocated (e.g. either drug or placebo groups).






16. A measure of the refracting power of a lens. Calculated as: 1 / focal length of the lens (in metres). The unit used is dioptres (symbol D). The power of a convex lens is positive; for a concave lens it is negative.






17. A bean-shaped tissue packed with immune system cells found at intervals along the vessels of the lymphatic system. They filter potentially harmful substances and organisms (microbes) from body fluids that drain into the lymphatic system; the filtered






18. A graphical method of showing whether two numerical variables are related to one another. They are called 'variables' because they can each have a range of possible values. Each data point represents a particular entity - such as a country - for whic






19. A) A transparent and flexible convex structure behind the iris that (together with the cornea) refracts light. b) A transparent object - usually made of glass or plastic - that refracts light. Found in spectacles - magnifying glasses and microscopes.






20. The electrical forces holding two atoms together.






21. That part of the nervous system that exerts control over the skeletal muscles and thereby over behaviour.






22. Diseases in which the pathogen causing the disease lives part of its life cycle in water; e.g. cholera - cryptosporidiosis.






23. The release of water vapour by plants.






24. Cells that cover all surfaces of the body. (CS 3 - 4 - 6 & 7)






25. A lens shape with a greater thickness at the centre than at each end.






26. Counts of deaths.






27. That part of the nervous system which exerts an influence over a number of the internal organs of the body - such as the gut - heart and blood vessels. Functions without conscious intervention.






28. To breathe more rapidly and deeply than normal.






29. Tissue in the centre of some large bones that contains cells (including stem cells) which are responsible for the production of white cells - red blood cells and a variety of other cells.






30. A molecule that facilitates a reaction but Which is left unchanged at the end; catalysis refers to the action of this.






31. A chemical that reduces microbial contamination of water - surfaces - etc.






32. A condition characterised by inflammation of the walls of the airways and excess production of mucus. It results in a persistent (chronic) cough with production of sputum - obstruction of airflow and increased vulnerability to respiratory infections.






33. A drug that acts to reduce the signs of inflammation - e.g. swelling - redness - heat and pain.






34. In screening - a person whose screening test result is negative (indicating no disease) - and who actually does not have the disease.






35. Insufficient levels of oxygen in the blood or tissue.






36. Severe psychological shock.






37. Photoreceptor cells that are responsible for night vision. These cells provide no information about colour.






38. A small unit of energy frequently used by physicists and denoted by the symbol eV.






39. One of a family of similar chemicals that have the generic name of 'alcohol' - with the chemical formula C2H5OH.






40. A molecule that has both negatively and positively charged regions.






41. A condition in which the optic nerve becomes damaged - usually because the pressure of fluid within the eye becomes too high - leading to a progressive loss of vision.






42. A tissue made up of cells embedded in a matrix of protein fibres which includes bones - fat and tendons; they connect - support - or surround other tissues and organs.






43. Disease - disorder or traumatic injury characterised by rapid onset - severe symptoms and short duration - From which the patient either recovers quickly or dies (CS 1 & 6). Some chronic (long-term) conditions can have acute episodes - e.g. exacerbat






44. A tissue that covers a surface or lines a space inside the body - forming a barrier or interface across which substances are absorbed or secreted - e.g. the skin - gut lining - and various glands.






45. An infection of the lower respiratory tract (the bronchi and lungs) - e.g. pneumonia.






46. Also known as 'organ systems'; combinations of organs and tissues that function in a coordinated way; e.g. the circulatory system - the nervous system - the respiratory system.






47. The cultivation of land for the purpose of crop production and/or the rearing of livestock - primarily for food - but also to provide materials - e.g. for fuel - clothing and shelter.






48. The entire range or extent of some quantity - arranged in order; e.g. electromagnetic or visible light.






49. A painful eye condition caused by repeated infections with the bacterium Chlamydia trachomatis .






50. An instrument that can be used to measure the volume of air entering and leaving the lungs.