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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. Multinucleated cell created by the fusion of several mononucleated embryonic cell
Fiber
Eccentric Contraction
T system
Tetanus
2. Inactive and infiltrated by adipose tissue
Myoglobin
Yellow marrow
Segmented Worms (Annelids)
Intramembranous Ossification
3. Stimulated by a message from the somatic nervous system sent via a motor neuron
Absolute Refractory Period
Thick Filaments
Muscle Contraction
Rig Mortis
4. Serve as bone to bone connectors
Sarcomeres
Segmented Worms (Annelids)
A Band
Ligaments
5. HGb-like protein found in muscle tissue -has a high oxygen affinity and maintains the oxygen supply in muscles by bind oxygen tightly
Cartilage
Muscle Contraction
Myoglobin
Flexion
6. Capable of propagating an action potential and is connected to a system of transverse tubules (T system) oriented perpendicularly to the myofibrils
Sarcolemma
Extrapyramidal System
Cartilage
H zone
7. Consists of a central microscopic channel called a Haversian Canal - surrounded by a number of lamellae
Z line
ATP
Osteon
Osteoclasts
8. Spans the entire length of the thick filaments and any overlapping portions of the thin filaments
Cartilage
Insertion
A Band
Muscle Contraction
9. Synthesize and secrete the organic constituents of the bone matrix; once they have become surrounded by their matrix - they mature into osteocytes
Sarcolemma
Segmented Worms (Annelids)
Osteoblasts
Cartilage
10. Attach skeletal muscle to bones and bend the skeleton at the movable joints
Sarcomere
Bone
Tendons
Absolute Refractory Period
11. Mesenchymal (embryonic or undifferentiated) connective tissue is transformed into - and replaced by - bone
Flagella
Absolute Refractory Period
Osteoclasts
Intramembranous Ossification
12. The cavities in between the spicules are filled with yellow or red bone marrow
A Band
Sarcoplasmic Reticulum
Extension
Spicules
13. Serves as the framework within all vertebrate organisms
Endochondral Ossification
Flagella
Endoskeleton
Tetanus
14. 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
Osteon
Rig Mortis
Muscles in Mammals
Osteoclasts
15. Runs down the center of the sarcomere
Segmented Worms (Annelids)
Axial Skeleton
H zone
M line
16. 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
Neuromuscular Junction
Osteoclasts
Dynamic Contraction
Sarcoplasmic Reticulum
17. Amoeba use for locomotion where the advancing cell membrane extends forward
Z line
Sarcolemma
Extension
Pseudopodia
18. After the contraction period - this is a brief relaxation period in which the muscle is unresponsive to a stimulus
Bone
Absolute Refractory Period
Dynamic Contraction
Latent period
19. Much less dense and consists of an interconnecting lattice of bony spicules
Striated Muscle
Spongy Bone
Thin filaments
Bone
20. Type of connective tissue that is softer and more flexible than bone -retained in adults in places where firmness and flexibility are needed
Cartilage
Skeletal Muscle
Myofibrils
Axial Skeleton
21. Time between stimulation and the onset of contraction
Endochondral Ossification
Latent period
Muscle Contraction
Sarcolemma
22. Units of diveded myofibrils
Sarcomeres
Spongy Bone
Myofibrils
Creatine Phosphate and ARginine Phosphate
23. Striations of light and dark bands of skeletal muscle
Exoskeleton
Sarcolemma
Smooth Muscle
Striated Muscle
24. Composed of organized bundles of myosin molecules
Thick Filaments
Myofibrils
Sarcomeres
Isotonic Contraction
25. Muscles contract against the resistance of the incompressible fluid within the animal's tissues (this fluid is termed the hydrostatic skeleton)
Intramembranous Ossification
Smooth Muscle
Flatworms
Flagella
26. State of partial contraction
Osteon
Tonus
H zone
Yellow marrow
27. Achieve movement by means of the power stroke -a thrusting movement generated by the sliding action of microtubules
Muscle Contraction
Flagella
Extrapyramidal System
Tendons
28. Provides channels for ion flow throughout the muscle fibers - and can also propagate an action potential
T system
Flatworms
Endochondral Ossification
Neuromuscular Junction
29. Existing cartilage is replaced by bone
Spongy Bone
Endochondral Ossification
Sarcoplasmic Reticulum
Segmented Worms (Annelids)
30. Indicates a straightening of a join
Dynamic Contraction
Ligaments
Flatworms
Extension
31. Modified endoplasmic reticulum that stores calcium ions that envelop myofibrils
Sarcomere
Eccentric Contraction
Rig Mortis
Sarcoplasmic Reticulum
32. In vertebrates and some invertebrates - particularly echinoderms - energy can be temporarily stored in a high-energy compound
Thick Filaments
Intramembranous Ossification
Creatine Phosphate and ARginine Phosphate
Cardiac Muscle Fibers
33. Occurs whne a muscle shortens against a fixed load while the tension on that remains constant
Isotonic Contraction
Intramembranous Ossification
T system
Unicellular Locomotion
34. Centers that can issue somatic motor commands as a result of processing performed at the unconscious - involuntary level
Extrapyramidal System
Dynamic Contraction
Unicellular Locomotion
Striated Muscle
35. Move by beating cilia or flagella
Skeletal Muscle
Unicellular Locomotion
Extrapyramidal System
Neuromuscular Junction
36. 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
Extension
Temporal Summation
Spicules
Pseudopodia
37. Composed of thin and thick filaments
Osteon
Sarcomere
Unicellular Locomotion
Muscle Contraction
38. Type of dynamic contraction where the muscle fibers shorten and the tension on the muscle increases
Cardiac Muscle Fibers
Sarcomere
Concentric Contraction
Origin
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
Intramembranous Ossification
Creatine Phosphate and ARginine Phosphate
Tetanus
Red Marrow
40. Chains of actin molecules
Isometric Contraction
Thin filaments
Concentric Contraction
M line
41. Occurs by either endochondral ossification or by intramembranous ossification
Segmented Worms (Annelids)
Bone Formation
Z line
Unicellular Locomotion
42. Filaments embedded in fibers of muscles - which are divided into sarcomeres
Myofibrils
Bone
Osteoclasts
T system
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
Cartilage
Compact Bone
Eccentric Contraction
Pyramidal System
44. Point of attachment of a muscle to a stationary bone (the proximal end in limb muscles)
Origin
Flatworms
Yellow marrow
Pseudopodia
45. Involved in blood cell formation
Extension
Bone
Lamellae
Red Marrow
46. Point of attachment of a muscle to the bone that moves (distal end in limb muscles)
ATP
Insertion
Extension
Cardiac Muscle Fibers
47. Type of dynamic contraction where the muscle fiber lengthens and the tension on the muscle increases
Fiber
Eccentric Contraction
Cori Cycle
Pyramidal System
48. The basic framework of the body - consisting of the skull - vertebral column - and the rib cage
Bone
Axial Skeleton
Smooth Muscle
Insertion
49. The region containing thin filaments only
Bone
Spongy Bone
I band
Endoskeleton
50. 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
Spongy Bone
Bone
Simple Twhich
Latent period