Exam 9: Muscles and Muscle Tissue

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A patient is admitted for electroconvulsive treatment (ECT). The physician orders the neuromuscular blocking agent succinylcholine to reduce trauma by relaxing skeletal muscles. Explain the process of muscle contraction and how a neuromuscular blocking agent such as succinylcholine would interfere with muscle contraction.

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Question 1

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Muscle contraction begins with a stimulus to the nerve. When the impulse reaches the neuromuscular junction, depolarization occurs, resulting in an influx of calcium ions from the extracellular fluid into the terminals, which then release a neurotransmitter, acetylcholine (ACh), into the cleft. The ACh combines with receptor sites on the postjunctional muscle cell membrane, depolarizing it and facilitating the entry of sodium. Neuromuscular blocking agents act at the motor end plate by competing with the ACh for the receptor sites, or by blocking depolarization.

The oxygen- binding protein found in muscle cells is .

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Question 2

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In the synaptic cleft of a neuromuscular junction, an enzyme called _ is always present.

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Question 3

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acetylcholinesterase

Compare red and white muscles relative to their speed of action and endurance.

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Question 4

Eccentric contractions are more forceful than concentric contractions.

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Question 5

After much delayed removal of an elbow cast, Lauren noticed her arm was immovable. What happened to her arm?

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Question 6

During isometric contraction, the energy used appears as movement.

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Question 7

Figure 9.2 Using Figure 9.2, match the following: -H zone.

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Question 8

Figure 9.2 Using Figure 9.2, match the following: -I band.

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Question 9

Figure 9.2Using Figure 9.2, match the following: -A band.

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Question 10

Smooth muscle is characterized by all of the following except .

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Question 11

The force of muscle contraction is controlled by multiple motor unit summation or recruitment.

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Question 12

Figure 9.2 Using Figure 9.2, match the following: -What ultimately stops muscle stimulation when the motor neuron ceases firing?

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Question 13

The muscle cell membrane is called the .

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Question 14

When a geriatric patient is admitted to the postsurgical unit, an important nursing measure is to prevent the loss of muscle mass. What is the term used for loss of muscle mass and how can the patient prevent it?

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Question 15

Which of the following statements is true?

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Question 16

Figure 9.2 Using Figure 9.2, match the following: -A smooth, sustained contraction from rapid stimulation is called _ .

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Question 17

Creatine phosphate functions in the muscle cell by .

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Question 18

Hypothetically, if a muscle were stretched to the point where thick and thin filaments no longer overlapped, .

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Question 19

Which of the following statements is false or incorrect?

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Question 20

Showing 1 - 20 of 109

Exam 9: Muscles and Muscle Tissue

The oxygen- binding protein found in muscle cells is .

In the synaptic cleft of a neuromuscular junction, an enzyme called _ is always present.

Compare red and white muscles relative to their speed of action and endurance.

Eccentric contractions are more forceful than concentric contractions.

After much delayed removal of an elbow cast, Lauren noticed her arm was immovable. What happened to her arm?

During isometric contraction, the energy used appears as movement.

Figure 9.2 Using Figure 9.2, match the following: -H zone.

Figure 9.2 Using Figure 9.2, match the following: -I band.

Figure 9.2Using Figure 9.2, match the following: -A band.

Smooth muscle is characterized by all of the following except .

The force of muscle contraction is controlled by multiple motor unit summation or recruitment.

Figure 9.2 Using Figure 9.2, match the following: -What ultimately stops muscle stimulation when the motor neuron ceases firing?

The muscle cell membrane is called the .

When a geriatric patient is admitted to the postsurgical unit, an important nursing measure is to prevent the loss of muscle mass. What is the term used for loss of muscle mass and how can the patient prevent it?

Which of the following statements is true?

Figure 9.2 Using Figure 9.2, match the following: -A smooth, sustained contraction from rapid stimulation is called _ .

Creatine phosphate functions in the muscle cell by .

Hypothetically, if a muscle were stretched to the point where thick and thin filaments no longer overlapped, .

Which of the following statements is false or incorrect?

The Human Body: an Orientation

Chemistry Comes Alive

Cells: the Living Units

Tissue: the Living Fabric

The Integumentary System

Bones and Skeletal Tissues

The Skeleton

Joints

The Muscular System

Fundamentals of the Nervous System and Nervous Tissue

The Central Nervous System

The Peripheral Nervous System and Reflex Activity

The Autonomic Nervous System

The Special Senses

The Endocrine System

Blood

The Cardiovascular System: the Heart

The Cardiovascular System: Blood Vessels

The Lymphatic System and Lymphoid Organs and Tissues

The Immune System: Innate and Adaptive Body Defensives

The Respiratory System

The Digestive System

Nutrition, Metabolism, and Body Temperature Regulation

The Urinary System

Fluid, Electrolyte, and Acid-Base Balance

The Reproductive System

Pregnancy and Human Development

Heredity

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