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Test your basic knowledge |
PCAT Biology Muscles And Locomotion
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Subjects
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pcat
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biology
Instructions:
Answer 50 questions in 15 minutes.
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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. Occurs when both ends of the muscle are fixed and no change in length occurs during the contraction - but the tension increases
Creatine Phosphate and ARginine Phosphate
Isometric Contraction
Origin
Pseudopodia
2. 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
Latent period
Bone Formation
Rig Mortis
Lamellae
3. Mesenchymal (embryonic or undifferentiated) connective tissue is transformed into - and replaced by - bone
Fiber
Intramembranous Ossification
Chorondytes
Temporal Summation
4. Achieve movement by means of the power stroke -a thrusting movement generated by the sliding action of microtubules
Spicules
Flagella
Yellow marrow
Cori Cycle
5. 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
Tonus
Eccentric Contraction
Sarcoplasmic Reticulum
6. Units of diveded myofibrils
Thin filaments
Dynamic Contraction
Sarcomeres
Eccentric Contraction
7. Attach skeletal muscle to bones and bend the skeleton at the movable joints
Chorondytes
Dynamic Contraction
Extrapyramidal System
Tendons
8. Large - multinucleated cells involved in bone resorption
I band
Osteoclasts
Fiber
Smooth Muscle
9. Point of attachment of a muscle to a stationary bone (the proximal end in limb muscles)
I band
Cartilage
Origin
Concentric Contraction
10. Advance principally by the action of muscles on a hydrostatic skeleton
Segmented Worms (Annelids)
Pyramidal System
Isometric Contraction
Red Marrow
11. Occurs by either endochondral ossification or by intramembranous ossification
Bone Formation
Latent period
I band
Compact Bone
12. State of partial contraction
Muscle Contraction
Tonus
Sarcomeres
Bone Formation
13. Composed of organized bundles of myosin molecules
Thick Filaments
Exoskeleton
Origin
Myoglobin
14. Capable of propagating an action potential and is connected to a system of transverse tubules (T system) oriented perpendicularly to the myofibrils
Skeletal Muscle
Flatworms
Sarcolemma
Sarcomere
15. Region containing thick filaments only
Flexion
Exoskeleton
H zone
Temporal Summation
16. 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
Axial Skeleton
Tetanus
Osteon
Tendons
17. A hard skeleton that covers all muscles and organs of some invertebrates -found principally in arthropods -composed of noncellular material secreted by the epidermis
Isotonic Contraction
Cartilage
Pseudopodia
Exoskeleton
18. Point of attachment of a muscle to the bone that moves (distal end in limb muscles)
Cardiac Muscle Fibers
Myofibrils
Skeletal Muscle
Insertion
19. Type of dynamic contraction where the muscle fibers shorten and the tension on the muscle increases
Segmented Worms (Annelids)
Extrapyramidal System
Concentric Contraction
Sarcomeres
20. Indicates a straightening of a join
Extension
Tendons
Lamellae
Muscles in Mammals
21. 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
Exoskeleton
Isotonic Contraction
H zone
Smooth Muscle
22. Filaments embedded in fibers of muscles - which are divided into sarcomeres
Osteoblasts
Extension
Endochondral Ossification
Myofibrils
23. Type of dynamic contraction where the muscle fiber lengthens and the tension on the muscle increases
T system
Eccentric Contraction
Concentric Contraction
Flagella
24. Amoeba use for locomotion where the advancing cell membrane extends forward
Unicellular Locomotion
Thin filaments
Pseudopodia
Cardiac Muscle Fibers
25. Purpose is to convert lactic acid in the liver to glucose for discharge into the bloodstream during period of strenuous activity
Cori Cycle
T system
Latent period
Chorondytes
26. Cells responsible for synthesizing cartillage
Unicellular Locomotion
Striated Muscle
Myofibrils
Chorondytes
27. Able to provide rapid commands to the skeletal muscles and variious other organs
Pyramidal System
Osteoclasts
Smooth Muscle
Yellow marrow
28. Composed of thin and thick filaments
H zone
Sarcomere
I band
T system
29. Time between stimulation and the onset of contraction
Temporal Summation
Unicellular Locomotion
Flatworms
Latent period
30. In vertebrates and some invertebrates - particularly echinoderms - energy can be temporarily stored in a high-energy compound
Creatine Phosphate and ARginine Phosphate
Neuromuscular Junction
Sarcomere
Flexion
31. Link between the nerve terminal (synaptic bouton( and the sarcolemma of the muscle fiber
Ligaments
Neuromuscular Junction
Muscles in Mammals
A Band
32. The cavities in between the spicules are filled with yellow or red bone marrow
I band
Yellow marrow
Spicules
Neuromuscular Junction
33. Concentric circles of bony matrix
Osteoblasts
Isotonic Contraction
Lamellae
Unicellular Locomotion
34. Modified endoplasmic reticulum that stores calcium ions that envelop myofibrils
Sarcoplasmic Reticulum
Endoskeleton
T system
Extrapyramidal System
35. Skeletal muscle - smooth muscle - and cardia muscle
Cori Cycle
Muscles in Mammals
Pyramidal System
Isotonic Contraction
36. Spans the entire length of the thick filaments and any overlapping portions of the thin filaments
A Band
Origin
Simple Twhich
Muscles in Mammals
37. Muscle tissues of the heart
Bone Formation
Cardiac Muscle Fibers
Osteon
Rig Mortis
38. Chains of actin molecules
Segmented Worms (Annelids)
Thin filaments
Cartilage
Yellow marrow
39. Much less dense and consists of an interconnecting lattice of bony spicules
T system
Tendons
Spongy Bone
Bone
40. The primary source of energy for muscle contraction
Myoglobin
Eccentric Contraction
Temporal Summation
ATP
41. HGb-like protein found in muscle tissue -has a high oxygen affinity and maintains the oxygen supply in muscles by bind oxygen tightly
Neuromuscular Junction
Tetanus
Pseudopodia
Myoglobin
42. Striations of light and dark bands of skeletal muscle
Eccentric Contraction
ATP
Cori Cycle
Striated Muscle
43. 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
Axial Skeleton
Rig Mortis
Bone
Isotonic Contraction
44. The region containing thin filaments only
Origin
Muscles in Mammals
Osteon
I band
45. Consists of a central microscopic channel called a Haversian Canal - surrounded by a number of lamellae
Isotonic Contraction
Osteon
Flatworms
Origin
46. Multinucleated cell created by the fusion of several mononucleated embryonic cell
Muscles in Mammals
Sarcoplasmic Reticulum
Fiber
Thin filaments
47. Move by beating cilia or flagella
Neuromuscular Junction
Axial Skeleton
Tonus
Unicellular Locomotion
48. Occurs whne a muscle shortens against a fixed load while the tension on that remains constant
Isotonic Contraction
Tetanus
Pyramidal System
Isometric Contraction
49. 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
Dynamic Contraction
Myoglobin
Tetanus
Yellow marrow
50. Inactive and infiltrated by adipose tissue
Yellow marrow
Compact Bone
Osteoclasts
Dynamic Contraction