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Test your basic knowledge |
PCAT Biology Muscles And Locomotion
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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. Spans the entire length of the thick filaments and any overlapping portions of the thin filaments
Myoglobin
A Band
Muscles in Mammals
Striated Muscle
2. Skeletal muscle - smooth muscle - and cardia muscle
Yellow marrow
Osteon
Muscles in Mammals
H zone
3. Capable of propagating an action potential and is connected to a system of transverse tubules (T system) oriented perpendicularly to the myofibrils
Sarcolemma
Skeletal Muscle
Latent period
Concentric Contraction
4. Striations of light and dark bands of skeletal muscle
Red Marrow
Chorondytes
A Band
Striated Muscle
5. Define the boundaries of a single sacromere and anchor the thin filaments
Tonus
Z line
Sarcoplasmic Reticulum
Thick Filaments
6. Chains of actin molecules
Thin filaments
Muscles in Mammals
Intramembranous Ossification
Striated Muscle
7. Much less dense and consists of an interconnecting lattice of bony spicules
Tonus
Spongy Bone
Flexion
Endochondral Ossification
8. After the contraction period - this is a brief relaxation period in which the muscle is unresponsive to a stimulus
Striated Muscle
Absolute Refractory Period
Tonus
Endochondral Ossification
9. Point of attachment of a muscle to the bone that moves (distal end in limb muscles)
Yellow marrow
Insertion
I band
Chorondytes
10. Able to provide rapid commands to the skeletal muscles and variious other organs
Flexion
Concentric Contraction
Myofibrils
Pyramidal System
11. A hard skeleton that covers all muscles and organs of some invertebrates -found principally in arthropods -composed of noncellular material secreted by the epidermis
Sarcoplasmic Reticulum
A Band
Exoskeleton
Endochondral Ossification
12. Large - multinucleated cells involved in bone resorption
Z line
Osteoclasts
Sarcolemma
Latent period
13. Synthesize and secrete the organic constituents of the bone matrix; once they have become surrounded by their matrix - they mature into osteocytes
Tonus
Osteoblasts
Sarcolemma
I band
14. Cells responsible for synthesizing cartillage
Pseudopodia
Chorondytes
Myofibrils
Striated Muscle
15. 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
Skeletal Muscle
Tetanus
I band
Temporal Summation
16. Type of dynamic contraction where the muscle fiber lengthens and the tension on the muscle increases
Sarcomeres
Eccentric Contraction
Chorondytes
Smooth Muscle
17. Provides channels for ion flow throughout the muscle fibers - and can also propagate an action potential
Osteon
Extension
Intramembranous Ossification
T system
18. Occurs by either endochondral ossification or by intramembranous ossification
Tetanus
Isotonic Contraction
Bone Formation
Latent period
19. Occurs when both ends of the muscle are fixed and no change in length occurs during the contraction - but the tension increases
Insertion
Dynamic Contraction
Tendons
Isometric Contraction
20. Consists of a central microscopic channel called a Haversian Canal - surrounded by a number of lamellae
Endochondral Ossification
Z line
Osteon
Temporal Summation
21. The basic framework of the body - consisting of the skull - vertebral column - and the rib cage
Tetanus
Axial Skeleton
Tonus
Temporal Summation
22. 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
Temporal Summation
Isometric Contraction
Unicellular Locomotion
Rig Mortis
23. Responsible for voluntary movements and is innervated by the somatic nervous system
M line
I band
Muscle Contraction
Skeletal Muscle
24. Dense bone that does not appear to have any cavities when observed with the naked -bony matrix is deposited in structural units called osteons
Ligaments
Sarcolemma
Spicules
Compact Bone
25. Refers to a bending of a joint
Muscle Contraction
Sarcomere
Flexion
Extrapyramidal System
26. The cavities in between the spicules are filled with yellow or red bone marrow
M line
Endoskeleton
Spicules
Tonus
27. Purpose is to convert lactic acid in the liver to glucose for discharge into the bloodstream during period of strenuous activity
Isotonic Contraction
Cori Cycle
Ligaments
Pyramidal System
28. Serve as bone to bone connectors
Compact Bone
Spicules
Ligaments
Endoskeleton
29. Mesenchymal (embryonic or undifferentiated) connective tissue is transformed into - and replaced by - bone
Intramembranous Ossification
Creatine Phosphate and ARginine Phosphate
Flatworms
Tonus
30. Point of attachment of a muscle to a stationary bone (the proximal end in limb muscles)
Lamellae
Cartilage
Origin
Thin filaments
31. Type of connective tissue that is softer and more flexible than bone -retained in adults in places where firmness and flexibility are needed
Cartilage
ATP
Fiber
Osteoclasts
32. Inactive and infiltrated by adipose tissue
Exoskeleton
Tetanus
Yellow marrow
Unicellular Locomotion
33. Concentric circles of bony matrix
Lamellae
Pseudopodia
Muscle Contraction
Osteoclasts
34. Occurs whne a muscle shortens against a fixed load while the tension on that remains constant
Isotonic Contraction
Cori Cycle
Skeletal Muscle
Unicellular Locomotion
35. Time between stimulation and the onset of contraction
Dynamic Contraction
Latent period
Z line
Tonus
36. In vertebrates and some invertebrates - particularly echinoderms - energy can be temporarily stored in a high-energy compound
Creatine Phosphate and ARginine Phosphate
Flexion
Spongy Bone
T system
37. Composed of organized bundles of myosin molecules
Osteon
Thick Filaments
Cartilage
Sarcoplasmic Reticulum
38. The region containing thin filaments only
T system
I band
Compact Bone
Pyramidal System
39. Centers that can issue somatic motor commands as a result of processing performed at the unconscious - involuntary level
Cartilage
Pseudopodia
Spicules
Extrapyramidal System
40. Indicates a straightening of a join
Rig Mortis
Intramembranous Ossification
Extension
Skeletal Muscle
41. HGb-like protein found in muscle tissue -has a high oxygen affinity and maintains the oxygen supply in muscles by bind oxygen tightly
Myoglobin
M line
Compact Bone
Extension
42. The primary source of energy for muscle contraction
Yellow marrow
ATP
Insertion
Myoglobin
43. Serves as the framework within all vertebrate organisms
Endoskeleton
Osteon
Concentric Contraction
Intramembranous Ossification
44. Units of diveded myofibrils
Sarcomeres
Thick Filaments
Intramembranous Ossification
T system
45. 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
Simple Twhich
Compact Bone
Chorondytes
Segmented Worms (Annelids)
46. Composed of thin and thick filaments
Sarcomere
Yellow marrow
Smooth Muscle
Flexion
47. Multinucleated cell created by the fusion of several mononucleated embryonic cell
Fiber
Segmented Worms (Annelids)
Endochondral Ossification
Ligaments
48. Advance principally by the action of muscles on a hydrostatic skeleton
Fiber
Thick Filaments
Segmented Worms (Annelids)
Origin
49. 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
Spongy Bone
Absolute Refractory Period
Rig Mortis
Lamellae
50. Region containing thick filaments only
H zone
Spongy Bone
Cori Cycle
Temporal Summation