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