Muscle Tissue and Structure Quiz

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Questions and Answers

What is the name of the cell membrane of a muscle cell?

  • Sarcoplasm
  • Myocyte
  • Myofibril
  • Sarcolemma (correct)

What is the name of the cytoplasm of a muscle cell?

  • Myocyte
  • Myofibril
  • Sarcolemma
  • Sarcoplasm (correct)

What is the name of the long structures in the sarcoplasm of a muscle cell?

  • Sarcolemma
  • Myocyte
  • Myofibril (correct)
  • Sarcoplasm

Which type of muscle tissue is responsible for the movement of substances out of passages like the digestive tract?

<p>Smooth muscle (B)</p> Signup and view all the answers

Which of the following is NOT a characteristic of skeletal muscle?

<p>Involuntary (A)</p> Signup and view all the answers

Which of the following muscle types is responsible for facial expressions?

<p>Skeletal Muscle (D)</p> Signup and view all the answers

What is the primary function of smooth muscle found in the walls of blood vessels?

<p>Regulating blood flow by vasoconstriction (A)</p> Signup and view all the answers

What type of muscle is responsible for propelling food through the digestive tract?

<p>Smooth Muscle (D)</p> Signup and view all the answers

What is the neurotransmitter that causes skeletal muscle contraction?

<p>Acetylcholine (D)</p> Signup and view all the answers

Which of the following is NOT a characteristic of smooth muscle?

<p>Fibers are striated and have a cylindrical shape (B)</p> Signup and view all the answers

Which type of muscle is responsible for the rhythmic contractions of the heart?

<p>Cardiac Muscle (C)</p> Signup and view all the answers

What is the role of acetylcholinesterase in muscle relaxation?

<p>It breaks down acetylcholine, allowing the muscle to relax (B)</p> Signup and view all the answers

Which of the following muscle types can be classified as either multiunit or visceral?

<p>Smooth Muscle (C)</p> Signup and view all the answers

Which type of muscle tissue is responsible for peristalsis?

<p>Smooth muscle (B)</p> Signup and view all the answers

What is the function of intercalated discs in cardiac muscle?

<p>To facilitate coordinated contractions between muscle fibers (C)</p> Signup and view all the answers

Which neurotransmitter slows down the heart rate?

<p>Acetylcholine (A)</p> Signup and view all the answers

Which of the following is NOT a method for muscle cells to store or produce ATP?

<p>Photosynthesis (B)</p> Signup and view all the answers

Which type of muscle tissue is responsible for voluntary movement?

<p>Skeletal muscle (A)</p> Signup and view all the answers

Which method of ATP production produces the largest amount of energy?

<p>Aerobic respiration (B)</p> Signup and view all the answers

What is the name of the chemical energy used by muscle cells?

<p>ATP (D)</p> Signup and view all the answers

Which of the following is NOT a characteristic of cardiac muscle?

<p>Voluntary control (D)</p> Signup and view all the answers

Flashcards

Skeletal Muscle

Muscle attached to bones, enabling voluntary movements.

Smooth Muscle

Involuntary muscle found in walls of hollow organs.

Cardiac Muscle

Involuntary muscle that makes up the heart.

Acetylcholine

Neurotransmitter that stimulates skeletal muscle contraction.

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Acetylcholinesterase

Enzyme that breaks down acetylcholine to relax muscles.

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Peristalsis

Rhythmic contraction of smooth muscle to move substances.

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Multiunit Smooth Muscle

Smooth muscle type found in iris and blood vessels.

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Visceral Smooth Muscle

Smooth muscle that contracts rhythmically in hollow organs.

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Heat Production in Muscles

Muscle contraction releases heat to maintain body temperature.

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Components of Muscle Cells

Muscle cells, known as myocytes, are specialized for contraction.

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Sarcolemma

The sarcolemma is the cell membrane surrounding a muscle fiber.

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Sarcoplasm

Sarcoplasm is the cytoplasm found within muscle fibers.

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Myofibrils

Myofibrils are long structures in muscle fibers that create striations.

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Intercalated Discs

Specialized connections between cardiac muscle cells that synchronize contractions.

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Self-Exciting

Property of cardiac muscle that allows it to contract without nerve signals.

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Norepinephrine

A neurotransmitter that speeds up the heart rate during contraction.

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ATP (Adenosine Triphosphate)

Energy carrier in muscle cells necessary for contractions and metabolism.

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Creatine Phosphate

A compound that helps quickly generate ATP in muscles for energy.

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Aerobic Respiration

Process that uses oxygen to generate ATP from glucose in muscle cells.

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