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. Indicates a straightening of a join






2. 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






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






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






5. Muscle tissues of the heart






6. Spans the entire length of the thick filaments and any overlapping portions of the thin filaments






7. When fibers of a muscle are expoed to a very frequent stimuli - the muscle can't fully relax and the contractions begin to combine - becoming stronger and more prolonged






8. Concentric circles of bony matrix






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






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






11. Striations of light and dark bands of skeletal muscle






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






13. Cells responsible for synthesizing cartillage






14. Region containing thick filaments only






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






16. The basic framework of the body - consisting of the skull - vertebral column - and the rib cage






17. Serve as bone to bone connectors






18. Achieve movement by means of the power stroke -a thrusting movement generated by the sliding action of microtubules






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






20. Composed of thin and thick filaments






21. Define the boundaries of a single sacromere and anchor the thin filaments






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






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






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






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






26. Much less dense and consists of an interconnecting lattice of bony spicules






27. Existing cartilage is replaced by bone






28. Move by beating cilia or flagella






29. 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






30. In vertebrates and some invertebrates - particularly echinoderms - energy can be temporarily stored in a high-energy compound






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






32. Large - multinucleated cells involved in bone resorption






33. Centers that can issue somatic motor commands as a result of processing performed at the unconscious - involuntary level






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






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






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






37. Time between stimulation and the onset of contraction






38. Serves as the framework within all vertebrate organisms






39. 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






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






41. Composed of organized bundles of myosin molecules






42. Stimulated by a message from the somatic nervous system sent via a motor neuron






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






44. The region containing thin filaments only






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






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






47. Runs down the center of the sarcomere






48. 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






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






50. Inactive and infiltrated by adipose tissue