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






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






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






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






5. The primary source of energy for muscle contraction






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






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






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






9. Units of diveded myofibrils






10. A hard skeleton that covers all muscles and organs of some invertebrates -found principally in arthropods -composed of noncellular material secreted by the epidermis






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






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






13. 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






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






15. Serve as bone to bone connectors






16. Skeletal muscle - smooth muscle - and cardia muscle






17. The region containing thin filaments only






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






19. 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






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






21. Occurs by either endochondral ossification or by intramembranous ossification






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






23. 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






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






25. 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






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






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






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






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






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






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






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






33. State of partial contraction






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






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






36. Serves as the framework within all vertebrate organisms






37. Runs down the center of the sarcomere






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






39. Synthesize and secrete the organic constituents of the bone matrix; once they have become surrounded by their matrix - they mature into osteocytes






40. Indicates a straightening of a join






41. Time between stimulation and the onset of contraction






42. Striations of light and dark bands of skeletal muscle






43. Large - multinucleated cells involved in bone resorption






44. Cells responsible for synthesizing cartillage






45. Chains of actin molecules






46. Involved in blood cell formation






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






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






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






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