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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. Purpose is to convert lactic acid in the liver to glucose for discharge into the bloodstream during period of strenuous activity
H zone
Isometric Contraction
Cori Cycle
Tendons
2. Provides channels for ion flow throughout the muscle fibers - and can also propagate an action potential
Tetanus
Osteon
T system
Tonus
3. The cavities in between the spicules are filled with yellow or red bone marrow
Extrapyramidal System
T system
Cardiac Muscle Fibers
Spicules
4. The basic framework of the body - consisting of the skull - vertebral column - and the rib cage
Muscle Contraction
Temporal Summation
Axial Skeleton
Sarcomeres
5. Occurs by either endochondral ossification or by intramembranous ossification
Pseudopodia
Osteon
Thin filaments
Bone Formation
6. Serves as the framework within all vertebrate organisms
Endoskeleton
Exoskeleton
Bone Formation
Skeletal Muscle
7. Consists of a central microscopic channel called a Haversian Canal - surrounded by a number of lamellae
Osteon
ATP
Origin
Isotonic Contraction
8. Involved in blood cell formation
Absolute Refractory Period
Sarcomere
Pseudopodia
Red Marrow
9. Centers that can issue somatic motor commands as a result of processing performed at the unconscious - involuntary level
Extrapyramidal System
Cardiac Muscle Fibers
H zone
Tonus
10. Occurs whne a muscle shortens against a fixed load while the tension on that remains constant
Osteon
Myoglobin
Concentric Contraction
Isotonic Contraction
11. Amoeba use for locomotion where the advancing cell membrane extends forward
Endochondral Ossification
Insertion
Osteoblasts
Pseudopodia
12. Responsible for voluntary movements and is innervated by the somatic nervous system
Skeletal Muscle
ATP
Origin
Spicules
13. Type of dynamic contraction where the muscle fiber lengthens and the tension on the muscle increases
M line
Tendons
Eccentric Contraction
Unicellular Locomotion
14. Composed of organized bundles of myosin molecules
Sarcomere
Bone Formation
Thick Filaments
Dynamic Contraction
15. Define the boundaries of a single sacromere and anchor the thin filaments
A Band
T system
Muscles in Mammals
Z line
16. Much less dense and consists of an interconnecting lattice of bony spicules
Temporal Summation
Rig Mortis
Spongy Bone
Osteoclasts
17. Units of diveded myofibrils
Temporal Summation
Sarcomeres
I band
Exoskeleton
18. Advance principally by the action of muscles on a hydrostatic skeleton
Segmented Worms (Annelids)
Neuromuscular Junction
Bone Formation
Temporal Summation
19. Capable of propagating an action potential and is connected to a system of transverse tubules (T system) oriented perpendicularly to the myofibrils
Creatine Phosphate and ARginine Phosphate
Cori Cycle
Sarcolemma
Intramembranous Ossification
20. Chains of actin molecules
Cori Cycle
Thin filaments
Compact Bone
Yellow marrow
21. Multinucleated cell created by the fusion of several mononucleated embryonic cell
Fiber
Compact Bone
Intramembranous Ossification
Striated Muscle
22. Large - multinucleated cells involved in bone resorption
Unicellular Locomotion
Axial Skeleton
Osteoclasts
Intramembranous Ossification
23. 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
Fiber
Flatworms
Rig Mortis
Sarcolemma
24. Time between stimulation and the onset of contraction
Myofibrils
Rig Mortis
Isometric Contraction
Latent period
25. Achieve movement by means of the power stroke -a thrusting movement generated by the sliding action of microtubules
M line
Flagella
A Band
Spongy Bone
26. Cells responsible for synthesizing cartillage
Origin
Myofibrils
Chorondytes
Myoglobin
27. Concentric circles of bony matrix
Lamellae
Unicellular Locomotion
Skeletal Muscle
Sarcomeres
28. Composed of thin and thick filaments
Tendons
Muscle Contraction
Neuromuscular Junction
Sarcomere
29. Filaments embedded in fibers of muscles - which are divided into sarcomeres
Myofibrils
Temporal Summation
Flatworms
Rig Mortis
30. HGb-like protein found in muscle tissue -has a high oxygen affinity and maintains the oxygen supply in muscles by bind oxygen tightly
ATP
Axial Skeleton
Dynamic Contraction
Myoglobin
31. 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
Smooth Muscle
Flagella
Sarcomeres
Concentric Contraction
32. A hard skeleton that covers all muscles and organs of some invertebrates -found principally in arthropods -composed of noncellular material secreted by the epidermis
Bone Formation
Exoskeleton
Neuromuscular Junction
Chorondytes
33. Modified endoplasmic reticulum that stores calcium ions that envelop myofibrils
I band
Isotonic Contraction
Sarcoplasmic Reticulum
Axial Skeleton
34. The primary source of energy for muscle contraction
Concentric Contraction
Chorondytes
Sarcomeres
ATP
35. 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
Z line
Dynamic Contraction
Thin filaments
Thick Filaments
36. Point of attachment of a muscle to the bone that moves (distal end in limb muscles)
Sarcomere
Skeletal Muscle
Insertion
Muscle Contraction
37. Runs down the center of the sarcomere
Tetanus
M line
Yellow marrow
T system
38. After the contraction period - this is a brief relaxation period in which the muscle is unresponsive to a stimulus
Isometric Contraction
T system
Absolute Refractory Period
Red Marrow
39. Striations of light and dark bands of skeletal muscle
Striated Muscle
Myofibrils
Simple Twhich
Sarcolemma
40. Able to provide rapid commands to the skeletal muscles and variious other organs
Myoglobin
Thin filaments
Pyramidal System
Osteoblasts
41. Type of connective tissue that is softer and more flexible than bone -retained in adults in places where firmness and flexibility are needed
Eccentric Contraction
Spicules
Cartilage
Flatworms
42. Refers to a bending of a joint
Flagella
Axial Skeleton
Flexion
Sarcomeres
43. 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
Thin filaments
Tetanus
ATP
Concentric Contraction
44. Existing cartilage is replaced by bone
Cardiac Muscle Fibers
Absolute Refractory Period
Endochondral Ossification
Sarcoplasmic Reticulum
45. 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
Dynamic Contraction
Thick Filaments
Temporal Summation
Chorondytes
46. Occurs when both ends of the muscle are fixed and no change in length occurs during the contraction - but the tension increases
Isometric Contraction
Rig Mortis
Eccentric Contraction
Endoskeleton
47. 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
Creatine Phosphate and ARginine Phosphate
Simple Twhich
Tonus
Bone
48. The region containing thin filaments only
I band
Fiber
Myoglobin
H zone
49. Inactive and infiltrated by adipose tissue
Creatine Phosphate and ARginine Phosphate
Yellow marrow
Muscle Contraction
Latent period
50. Muscle tissues of the heart
Flagella
Cardiac Muscle Fibers
Axial Skeleton
A Band