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. Refers to a bending of a joint






2. Occurs by either endochondral ossification or by intramembranous ossification






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






4. Muscle tissues of the heart






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






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






7. Move by beating cilia or flagella






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






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






10. Runs down the center of the sarcomere






11. Skeletal muscle - smooth muscle - and cardia muscle






12. 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






13. Composed of organized bundles of myosin molecules






14. Striations of light and dark bands of skeletal muscle






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






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






17. Region containing thick filaments only






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






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






20. Existing cartilage is replaced by bone






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






22. Chains of actin molecules






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






24. The region containing thin filaments only






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






26. Serve as bone to bone connectors






27. 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






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






29. 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






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






31. State of partial contraction






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






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






34. Cells responsible for synthesizing cartillage






35. Concentric circles of bony matrix






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






37. Units of diveded myofibrils






38. 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






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






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






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






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






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






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






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






46. 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






47. Serves as the framework within all vertebrate organisms






48. Involved in blood cell formation






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






50. Inactive and infiltrated by adipose tissue