Homework Answers
Ans blocks the contraction of muscles
Tetanospasmin is produced by Clostridium tetani . This toxin is responsible for causing-
- Muscle spasms .
- It causes muscles not to relax.
- It causes contraction of muscles.
This toxin prevents the release of neurotransmitter glycine and inhibitory impulse is blocked. So there will be an unopposed muscle contraction.
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Question 3 Which of the following is FALSE regarding the tetanospasmin toxin? O Produced by Clostridium...
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Question 29 4 pts Match the...
Which of the following statements about skeletal muscle contraction is false? During muscle contraction, the Z...
Which of the following statements about skeletal muscle contraction is false? During muscle contraction, the Z discs move closer together as the myosin heads move toward the plus ends of the actin filaments. The changes in voltage across the plasma membrane that occur when a muscle cell receives a signal from the nervous system causes Ca2+ to flow into the sarcoplasmic reticulum, triggering a muscle contraction. An action potential in the muscle cell plasma membrane leads to voltage-gated calcium channels...
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Flag question "All or none" applies to Select one: a. individual muscle fibers O b. muscle...
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all 3? Which statement about muscle contractions is false? O An action potential in the muscle...
all 3?
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1. True -False. If a statement is True, place a T to the left of it....
1. True -False. If a statement is True, place a T to the left of it. If a statement is False, place an F to the left of it. Thin filaments in smooth muscles attach to Z discs. The majority of ventricular filling occurs during the period of atrial contraction known as the period of rapid filling. Closure of the atrioventricular valves occurs at the end of diastole/beginning of systole. Tetanus in skeletal muscles is the result of increasing the...
Resources Ly Give Up? O Hint Chech Question 25 of 35 > Skeletal muscles are almost...
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QUESTION 2 A neurotoxin produced by a species of Clostridium, this type ill toxin binds to inhibitory interneurons of the spinal cord and blocks their release of inhibitor molecules. This causes spastic paralysis, a condition where opposing flexor and extensor muscles simultaneously contract. Death is usually from respiratory failure. A toxold can be used to immunize against this disease. Tetanus exotoxin Botulism exotoxin Streptococcal pyrogenic exotoxin (SPE) Shiga toxin Leukotoxin
Question 29 4 pts Match the following immunoglobulins with their description crosses the placenta and is known to protect fetus and newborn lobulin produced in response to lgD antigen IgG 9 pts Hide Question 30 l app.honorlock.com is sharing your screen Match the f Clostridium tetan Chlamydia trachomatis Clostridium perfringens Clostridium botulinum sign of infection with this organism causes muscle contraction I Choose This leading STD is an obligate intracellular is sharing your screen
Question 29 4 pts Match the...
Which of the following statements about skeletal muscle contraction is false? During muscle contraction, the Z discs move closer together as the myosin heads move toward the plus ends of the actin filaments. The changes in voltage across the plasma membrane that occur when a muscle cell receives a signal from the nervous system causes Ca2+ to flow into the sarcoplasmic reticulum, triggering a muscle contraction. An action potential in the muscle cell plasma membrane leads to voltage-gated calcium channels...
Flag question "All or none" applies to Select one: a. individual muscle fibers O b. muscle bundles Clear my choice Which of the following fibers would you expect to find in higher concentration in the postural muscles? Select one: O a. fast twitch O b. slow twitch Which of the following describes skeletal muscle relaxation? Select one: O a. Ca+2 transported into SR O b. action potential causes release of neurotransmitter O C. ATP required O d. Ca+2 binds to...
all 3?
Which statement about muscle contractions is false? O An action potential in the muscle cell activates contraction by releasing Car within the muscle. O A single action potential at the neuromuscular junction is sufficient to cause a muscle to twitch. O Summation of twitches leads to a graded increase in the tension that can be generated by a single muscle fiber. The tension generated by a muscle can be varied by controlling how many of its motor units...
Which of the following is the correct sequence of events regarding the cardiac cycle? Multiple Choice Isovolumic contraction, isovolumic relaxation, ejection, passive ventricular filling, active ventricular filling Isovolumic relaxation, isovolumic contraction, ejection, passive ventricular filling, active ventricular filling Isovolumic contraction, ejection, isovolumic relaxation, passive ventricular filling, active ventricular filling Isovolumic contraction, ejection, isovolumic relaxation, active ventricular filling, passive ventricular filling Ejection, isovolumic relaxation, passive ventricular filling, Isovolumic contraction, active ventricular filling
Resources Ly Give Up? O Hint Chech Question 25 of 35 > Skeletal muscles are almost never completely relaxed. Even when a skeletal muscle is not fully contracting or moving, the nervous system automatically stimulates different groups of motor units, which creates a small degree of contraction Wat is the name of this mechanism? O muscle tone O eccentric contraction O muscle tension isometric contraction MacBook Air
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