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Introduction To Health Sciences Vocab
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Introduction To Health Sciences Vocab
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1. The photoreceptor cells located in the retina that are responsible for daytime and colour vision.

2. A technique in which a person is placed in a particular psychological state and - in response to suggestions made by the hypnotist - can experience alterations in perception - memory and voluntary action.

3. A condition that may develop following exposure to an extremely stressful situation - typically where a person witnesses the violent death of someone else - or believes their own life is in danger. Symptoms include disordered sleeping - a dread of si

4. The quantity of heat required to raise the temperature of a body - or a quantity of liquid - by 1 A

5. Blood that contains very little oxygen.

6. A process whereby a stimulus that owes its power to conditioning loses this power by being repeatedly presented on its own; e.g. the ceasing of the capacity of a bell to trigger salivation occurs if the bell is repeatedly sounded - but without food b

7. The total amount of air that can be taken in to the lungs during a maximum inspiration - or expelled during a maximal expiration. (Abbreviated to VC)

8. The standard scientific (SI) unit for measuring volume; it has the symbol l.

9. The distance between atoms in a molecule.

10. An atom of hydrogen and an atom of oxygen bonded together - Which is bonded to an organic molecule; can form hydrogen bonds with other polar molecules.

11. A complex specialised molecule embedded in the outer membrane of a cell - or in its internal structure - which has a unique three-dimensional shape and patterns of electrical charge that enable it to bind specifically to a particular signalling molec

12. The system of organs and structures in which gas exchange takes place. In mammals it consists of the airways - the lungs and the muscles that mediate the movement of air into and out of the lungs.

13. A very long macromolecule found in the cell nucleus - abbreviated to DNA. It is the main component of chromosomes and is the material that transfers genetic characteristics through the generations in all organisms. The genetic information is carried

14. X-ray imaging of the breast.

15. A drug that widens the airways of the lungs and eases breathing by relaxing smooth muscle in the walls of bronchioles.

16. A type of cell that can migrate into wound sites and make new extracellular matrix proteins such as collagen.

17. A condition in which the immune system fails to respond normally to an infection; it can be caused by a genetic defect and by HIV/AIDS - as well as by malnutrition.

18. Qualified to employ a range of equipment such as X-rays - MRI scanners - etc. to produce images to diagnose an injury or disease. They will then have undergone further specialist training in mammography. (Two types - diagnostic and therapeutic; the l

19. The distance between the principle focal point and the centre of a lens.

20. The blood pressure that is detected during heart contractions - Which is higher than the diastolic pressure.

21. A class of neuron that is neither sensory nor motor.

22. An irreversible lung disease that is a combination of emphysema and chronic bronchitis - in which airway obstruction causes breathing difficulties - including shortness of breath.

23. A substance composed of positively and negatively charged ions - held together by the electrical attraction between opposite charges. Salts such as sodium chloride (NaCl) - in which the ions are organised in a regular crystal lattice - are this.

24. Abbreviation of a eye-surgery technique where a flap is cut in the cornea and laser treatment applied beneath.

25. Large blood vessels that carry blood towards the heart.

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