Category: Biology

Heeft er iemand weet waar je meer informatie over Bone Cancer? »

By Admin on May 1, 2009 in Biology | 1 Comment

sher2008 asked: Websites, boeken, tijdschriften, enz.! Ik ben bezig met mijn verslag over Bone Cancer. Het heeft 3 soorten bot ******. Maar ik wil veel dingen. Ik heb om een presentatie. Als naar verwachting 5 tot 10 minuten. Dat is alles wat ik nodig heb. ? .?? ..

How are cancer cells similar to normal cells, and how are they different? »

By Admin on Apr 29, 2009 in Biology | 8 Comments

Lil Cleveland216 asked: I weià ? that a à hnlichkeit ? wäre cells regenerates, and a difference wäre cancer cells uncontrolled grow. Does it give somewhat, what otherwise??4+.pureftpd-upload.49e07873.15.112c2.e3f8ca39 ?? links 2.txt

Heart Review Questions 1. Blood in arteries: a. always travels away from the heart c. always travels towards the heart b. is always oxygen rich d. is oxygen poor 2. The human heart: a. will contract as a result of stimuli from the SA node b. contracts only as a result of nerve stimulation from the central nervous system c. is independent of all nervous control 3. Which occurs during systole? a. oxygen rich blood is pumped to the lungs b. the heart muscle tissues contract c. the atrioventricular valves suddenly open 4. The part of the brain responsible for blood pressure and heart rate is: a. medulla c. cerebrum b. cerebellum d. pons 5. The heart is enclosed in the a. pleural sac c. peritoneal sac b. pericardial sac 6. The function of the pericardial fluid is to a. nourish the heart c. stretch the membranes b. lubricate the membranes 7. The chambers located in the bottom of the heart are called a. ventricles c. atria b. descending aorta d. septa 8. Which of the following is not an atrioventricular valve? a. mitral valve c. aortic valve b. bicuspid valve d. they all are the same valve 9. Name the only arteries that carry deoxygenated blood. a. vena cava c. pulmonary b. carotid d. jugular 10. The inner lining of the heart is the a. epicardium c. endocardium b. myocardium 11. The lubb sound of the heart is caused by the a. semilunar valves closing c. atrioventricular valves opening b. atrioventricular valves closing 12. The normal pacemaker of the heart is the a. SA node c. Bundle branches b. AV node d. Purkinje fibers 13. A cardiac arrhythmia is a. the heart beating normally c. the heart not beating at all b. the heart beating abnormally 14. Vasodilation a. widens the arterioles, decreasing vessel resistance b. narrows the arteriole, decreasing vessel resistance c. a and b 15. A small one cell thick vessel is called a/an a. artery c. capillary b. vein 16. An abnormal bulging of a vessel is known as a/an a. atherosclerosis c. plaques b. aneurysm 17. Which of the following classifications of cancer is associated with cancer of blood-forming tissue? a. carcinoma c. leukemia b. glioma d. sarcoma 18. The most common vascular disease is (hint: high blood pressure): a. phlebitis c. leukemia b. hypertension d. sickle cell anemia 19. When a blood clot becomes dislodged it is called a: a. thrombus c. embolism b. aneurysm d. stroke 20. In arteriosclerosis, a. there is a build up of calcium salts in arterial walls b. there is a build up of fibrous tissue in arterial walls c. arteries lose their elasticity d. all of these 21. A stroke is a rupture of a blood vessel in the: a. leg c. heart b. brain d. lung »

By Admin on Mar 5, 2008 in Biology | 2 Comments

k asked:

Hoe worden de kankercellen die vergelijkbaar zijn met normale cellen, en hoe zijn ze anders? »

By Admin on Mar 4, 2008 in Biology | 8 Comments

Lil Cleveland216 asked: Ik weet dat een gelijkenis zou cellen regenereren, en een verschil zou zijn kankercellen ongecontroleerd groeien. Is er iets anders?

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