Question 11 pts At the neuromuscular junction, what specific receptor is located

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Question 11 pts

At the neuromuscular junction, what specific receptor is located at the muscle cell?

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Question 21 pts

Transverse tubules are found along the plasma membrane of a muscle cell.

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Question 31 pts

Which of the following is NOT true about muscle cells?

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Question 41 pts

Match the term on the left with the term on the right.

Dihydropyridine Receptor (DHP)

      [ Choose ]            Dihydropyridine Receptor (DHP)            Calcium channel in the sarcoplasmic reticulum            Transmembrane proteins in the T-tubules            Ryanodine Receptor (RYR)      

Ryanodine Receptor (RYR)

      [ Choose ]            Dihydropyridine Receptor (DHP)            Calcium channel in the sarcoplasmic reticulum            Transmembrane proteins in the T-tubules            Ryanodine Receptor (RYR)      

Releases Calcium into cytoplasm

      [ Choose ]            Dihydropyridine Receptor (DHP)            Calcium channel in the sarcoplasmic reticulum            Transmembrane proteins in the T-tubules            Ryanodine Receptor (RYR)      

Delivery of positive charge causes extension of the receptor to move

      [ Choose ]            Dihydropyridine Receptor (DHP)            Calcium channel in the sarcoplasmic reticulum            Transmembrane proteins in the T-tubules            Ryanodine Receptor (RYR)      

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Question 51 pts

*** This is an example of a test question ***

In skeletal muscle, the role of the voltage-gated Na + channel is to:

Explanation / Answer

QUESTION 11 PTS

ANSWER: NICOTINIC ACETYLOCHOLINE RECEPTOR

EXPLANATION: THIS IS A PRIMAEY RECEPTOR IN MUSCLE . FUNCTION: MOTOR NERVE MUSCLE COMMUNICATION THAT CONTROLS MUSCLE CONTRACTION.

QUESTION 21 PTS

ANSWER: TRUE

EXPLANATION : T TUBULES OR TRANSVERSE TUBULES ARE EXTENTIONS OF THE PLASMA MEMBRANE THAT PENETRATE INTO THE MID OF CARDIAC AND SKELETAL MUSCLES.

QUESTION 31 PTS

ANS : AN AP ARRIVING AT THE NEUROMASCULAR JUNCTION TRIGGERS THE RELEASE OF CALCIUM INTO THE CYTOPLASM

QUESTION 51PTS

ANS:( e) : a,c both.

explanation: VOLTAGE GATED SODIUM CHANNELS ARE RESPONSIBLE FOR THE INITIATION OF ACTION POTENTIAL AND PROPAGATION IN CELLS.

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