1. The study of the muscular system is known as ____________ 2. Which of the fol
ID: 3481840 • Letter: 1
Question
1. The study of the muscular system is known as ____________
2. Which of the following is not a purpose of the excess post-exercise oxygen consumption in muscle? A. to neutralize carbon dioxide buildup B. to replenish the phosphagen system C. to oxidize lactic acid D. to serve elevated metabolic rate E. to restore resting levels of ATP and CP
3. Which muscle type depends solely on the sarcoplasmic reticulum as its calcium source?
4. The term for shortening of a muscle while maintaining constant tension is ________
5. The minimum stimulus needed to cause muscle contraction is called ___________
6. If one nerve stimulus arrives at a muscle fiber so soon that the fiber has only partially relaxed from the previous twitch, the most likely result will be ___________
7. Which of the following has the largest mitochondria?
A. slow oxidative fibers B. fast glycolytic fibers C. cardiac muscle
D. smooth muscle E. intermediate fibers
9. Which of the following systems would provide energy for a racquetball player?
A. the respiratory system B. the glycolysis system C. the phosphagen system
D. the anaerobic system E. glycogen-lactic acid system
10. Loss of muscle mass from lack of activity is termed _______________
11. In skeletal muscle, alternating light and dark bands are termed _________________.
12. The absence or inhibition of AChE at a synapse would lead to _______________?
13. To stimulate muscle contraction, acetylcholine is released from the ___________ into the synaptic cleft.
14. Which statement best describes the goal of medications used to treat myasthenia gravis?
A. to increase the number of ACh receptors B. to decrease the number of synaptic vesicles
C. to promote multiple motor unit summation D. to inhibit the function of cholinesterase
E. to inhibit Ca2+ release from the sarcoplasmic reticulum
15 Where would you expect to find numerous gap junctions in (which) muscular tissue?
16. Athletes who train at high altitudes increase their red blood cell count and thus increase their oxygen supply during exercise. Increased oxygen supply results in ___________.
17. Which of the following would be caused by contraction of smooth muscle?
A. goose bumps B. elevating the eyebrows C. blinking the eyelids
D. deep inspiration E. blood leaving the left ventricle of the heart
18. The triads of a muscle fiber consist of ______________
19. As you are lifting a box someone places extra weight on top of it. For your muscle to continue contracting and lifting the box, the muscle must
A. recruit more muscle fibers. B. lower its threshold. C. reduce its wave summation.
D. shift from isometric to isotonic contraction. E. shift from slow-twitch to fast-twitch
20. The protein that acts as a calcium receptor in skeletal muscle is _____________
21. Drugs called calcium channel blockers may be used to lower blood pressure by causing arteries to vasodilate. What do these drugs do? .
22. Exposure to Clostridium tetani causes continuous release of ACh. What effect does this have on smooth muscle? _____________
23. A reason that muscle twitches become progressively stronger in treppe is __________
( Ca2+ accumulates in the sarcoplasm faster than the sarcoplasmic reticulum can reabsorb it.).
24. What does Creatine kinase do?.
25. What condition describes the resting membrane potential (RMP)in nerves and muscles?
26. What is the purpose of the triad?
27. What does the release of ACh do?___ .
28. Smooth muscle cells have ______________ to bind Ca.
For Qs. 64-67, Mark A= Skeletal muscle; B=Cardiac muscle C=Smooth muscle
64. Which one is most dependent on extracellular Ca2+? ___________
65. Which muscle tissue contracts in response to conscious nervous stimulation? _______
66. Which does not exhibit striations? ________________________
67. Which has the widest T tubules? ____________________
95. Which muscle tissue has the greatest capacity for regeneration? ________________
Fill in the Blanks.
82. A bundle of muscle fibers surrounded by perimycium is called a/an ______________________
89. The minimum stimulus intensity that will make a muscle contract is called _______________.
90. Parts of the sarcoplasmic reticulum called _________________ lie on each side of a T tubule
Explanation / Answer
1. The study of muscular system is known as myology.
2. To serve elevated metobolic rate is not responsible for post exercise oxygen consumption in muscles. All the other options are true.
3.Cardiac muscle is solely depends on the extracellular calcium source for it's contraction.
4.Isotonic contraction is defined as change in the length(short or long) of muscle while maintaining a constant tension
5.Threshold potential is defined as a minimal stimulus required to contract a muscle.
Related Questions
Navigate
Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.