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PCAT Biology Vascular Systems In Animals And Plants

Subjects : pcat, biology
Instructions:
  • Answer 50 questions in 15 minutes.
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  • 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. Valve on the left side of the heart that has two cusps






2. As water evaporates from the leaves of plants - a vacuum is created pulls water up the stem






3. Carries impuls of AV node which branches into the right and left bundle branches - and through the Purkinje fibers in the walls of ventircles - generating a strong contraction






4. The period during which the ventricles contract






5. Responsible for both of these immune mechanisms






6. Composed of nonspecific and specific defense mechanisms






7. Smallest diameter of all three types of vessels; red blood cells must often travel through them single file






8. Where exchange occurs in arthropods






9. Epidermis (outer-bark) - cortex - phloem - cambium - xylem - and pith






10. Located between the atria and ventricles on both sides of the heart - prevent backflow of blood into the atria






11. Exchange of gases - nutrients - and cellular waste products occurs via diffusion across this






12. Supply plant cells with nutrients and remove waste products






13. A small mass of specialized tissue located in the wall of the right atrium regulates/originates an ordinary cardiac contraction -spreads impulses through both atria - stimulating them to contract simultaneously






14. Phagocytic cells that filter the lymph - removing and destroying foreign particles and pathogens






15. Universal donor since it will not elicit a response from the recipient's immune system because it does not possess any surface antigens






16. Systole and diastole - which together make a heartbeat






17. An individual is injected witha weakened - inactive - or related form of a particular antigen - which stimulates the immune system to produce specific antibodies against it






18. Engulf and detroy foreign particles






19. Secondary circulatory system distinct from the cardiovascular circulation - =vessels transport lymph to the cardiovascular system - thereby keeping fluid levels in the body constant






20. Two layers thick and are the actively dividing - undifferentiated cells that give rise to xylem and phloem cell layers; as they divide - the cells near the phloem differentiate into phloem cells - and the cells near the xylem differentiate into xylem






21. Blood is confined to blood vessel






22. Liquid portion of the blood -aqueous mixture of nutrients - salts - respiratory gases - wastes - hormones - and blood proteins -components are erythrocytes - leukocytes - and platelets






23. Two lower chambers of the heart -extremely muscular






24. When hemoglobin bind to oxygen






25. Run up and down the stem at the center and contains xylem - phloem - and cambium cells






26. Have three cusps and are located between the left ventricle and the aorta and between the right ventricle and the pumonary artery (the pulmonic valve)






27. Fetal red blood cells (which will have the Rh factor) enter maternal circulation during birth which cause the anti-Rh antibodies she produced when sensitized by the first birth may cross the placenta and destroy fetal red blood cells






28. Branches into a series of arteries






29. Outer layer of xylem that is alive






30. Cardiac muscle contracts rhythmically without stimulation from the nervous system - producing impulses that spread through its internal conducting system






31. Valve on the right side of the heart has three cusps






32. Relatively thinly walled - inelastic vessels that conduct deoxygenated blood toward the heart






33. Lying between the phloem and xylem - is a type of meristem called lateral meristem that provides for lateral growth of the stem by adding to the phloem or xylem






34. Produced by cells under viral attack and diffuse to other cells - where they help prevent the spread of the virus






35. Thick-walled - muscular - elastic vessels that transport oxygenated blood away from the heart






36. Include arteries - veins - and capilleries






37. Converge into venules and eventually into veins - leading deoxygenated blood back toward the heart






38. Physical barier against bacterial invasion






39. Prevent extensive blood loss while the damaged vessel heals itself






40. The driving force of the circulatory system






41. Carry oxygenated blood from the lungs to the heart






42. Any liquid in a thin tube will rise becaUse of the surface tension of the liquid and interactions between the liquid and the tube






43. Cells that are thick walled - often hollow cells located on the inside of the vascular bundle that carry water and minerals up the plant - and their thick walls give the plant its rigid support






44. Converts fibrinogen (another plasma protein) into fibrin






45. Universal recipient as it has neither anti-A nor anti-B antibodies






46. Branch into microscopic capillaries






47. Involves the production of antibodies and cell-mediated immunity






48. Leukocytes that migrate from the blood to tissue - where they mature into stationary cells






49. Serve protective functions -aka WBC






50. Two upper chambers of the heart -thin walled