Test your basic knowledge |

PCAT Biology Muscles And Locomotion

Subjects : pcat, biology
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. Region containing thick filaments only






2. Attach skeletal muscle to bones and bend the skeleton at the movable joints






3. State of partial contraction






4. Serves as the framework within all vertebrate organisms






5. Inactive and infiltrated by adipose tissue






6. Mesenchymal (embryonic or undifferentiated) connective tissue is transformed into - and replaced by - bone






7. Concentric circles of bony matrix






8. Chains of actin molecules






9. Responsible for voluntary movements and is innervated by the somatic nervous system






10. Runs down the center of the sarcomere






11. Link between the nerve terminal (synaptic bouton( and the sarcolemma of the muscle fiber






12. Serve as bone to bone connectors






13. Composed of organized bundles of myosin molecules






14. Includes both concentric and eccentric types of contractions -results in the chang in length of the muscle with a corresponding change in tension on that muscle






15. Existing cartilage is replaced by bone






16. Contraction that becomes continuous when the stimuli are so frequent that the muscle can't relax and is stronger than a simple twith of a single fiber






17. Type of dynamic contraction where the muscle fibers shorten and the tension on the muscle increases






18. Time between stimulation and the onset of contraction






19. Striations of light and dark bands of skeletal muscle






20. Refers to a bending of a joint






21. The response of a single muscle fiber to a brief stimulus at or above the threshold stiulus - and consists of a latent period - a contraction period - and a relaxation period






22. Occurs whne a muscle shortens against a fixed load while the tension on that remains constant






23. Move by beating cilia or flagella






24. Responsible for involuntary actions and is innervated by the autonomic nervous system -found in the digetive tract - bladder - uterus - and blood vessel walls - among other places






25. Point of attachment of a muscle to the bone that moves (distal end in limb muscles)






26. Involved in blood cell formation






27. Type of dynamic contraction where the muscle fiber lengthens and the tension on the muscle increases






28. HGb-like protein found in muscle tissue -has a high oxygen affinity and maintains the oxygen supply in muscles by bind oxygen tightly






29. Point of attachment of a muscle to a stationary bone (the proximal end in limb muscles)






30. Specialized type of mineralized connective tissue that has the ability to withstand physical stress -designed for body support -hard and strong while - at the same time somewhat elastic and lightweight






31. Purpose is to convert lactic acid in the liver to glucose for discharge into the bloodstream during period of strenuous activity






32. Large - multinucleated cells involved in bone resorption






33. Multinucleated cell created by the fusion of several mononucleated embryonic cell






34. Occurs when both ends of the muscle are fixed and no change in length occurs during the contraction - but the tension increases






35. After the contraction period - this is a brief relaxation period in which the muscle is unresponsive to a stimulus






36. Type of connective tissue that is softer and more flexible than bone -retained in adults in places where firmness and flexibility are needed






37. Consists of a central microscopic channel called a Haversian Canal - surrounded by a number of lamellae






38. Amoeba use for locomotion where the advancing cell membrane extends forward






39. Advance principally by the action of muscles on a hydrostatic skeleton






40. Muscle tissues of the heart






41. Able to provide rapid commands to the skeletal muscles and variious other organs






42. Condition where the muscles contract and become rigid - even without action potentials which is caused b an absence of adenosiine triphosphate - which is required for the myosin heads to be released from the actin filaments






43. Dense bone that does not appear to have any cavities when observed with the naked -bony matrix is deposited in structural units called osteons






44. Filaments embedded in fibers of muscles - which are divided into sarcomeres






45. Cells responsible for synthesizing cartillage






46. Capable of propagating an action potential and is connected to a system of transverse tubules (T system) oriented perpendicularly to the myofibrils






47. Provides channels for ion flow throughout the muscle fibers - and can also propagate an action potential






48. Muscles contract against the resistance of the incompressible fluid within the animal's tissues (this fluid is termed the hydrostatic skeleton)






49. The primary source of energy for muscle contraction






50. The cavities in between the spicules are filled with yellow or red bone marrow