Muscular System: Types of Muscle Tissues

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Which type of muscle tissue is usually attached to bones and under conscious control?

Skeletal Muscle (correct)

Cardiac Muscle

Smooth Muscle

Autonomic Muscle

What is the function of the transverse (‘T’) tubules in skeletal muscle fibers?

They facilitate the release of calcium ions

They are part of the sarcoplasmic reticulum

They store myofibrils

They are involved in muscle contraction (correct)

What is the primary function of the neuromuscular junction?

To facilitate muscle contraction

To transmit nerve impulses (correct)

To store acetylcholine

To regulate muscle relaxation

What is the purpose of acetylcholinesterase in the neuromuscular junction?

To decompose acetylcholine Signup and view all the answers

Which of the following energy sources is used to quickly convert ADP to ATP?

Creatine phosphate Signup and view all the answers

What is the outcome of the anaerobic phase of cellular respiration in muscle cells?

Production of little ATP Signup and view all the answers

What is the term for the amount of oxygen needed by liver cells to use accumulated lactic acid to produce glucose?

Oxygen debt Signup and view all the answers

What is the term for a sustained, involuntary muscle contraction?

Muscle cramp Signup and view all the answers

Which of the following is a common cause of muscle fatigue?

Ion imbalances across the sarcolemma Signup and view all the answers

What is the term for the thin filaments composed of actin protein in skeletal muscle fibers?

Thin myofilaments Signup and view all the answers

What is the term for the structure that wraps individual muscle cells in skeletal muscle tissue?

Endomysium Signup and view all the answers

What is the minimal strength required to cause muscle contraction?

Threshold Stimulus Signup and view all the answers

What type of muscle fibers are resistant to fatigue and have a good blood supply?

Slow-Twitch Fibers Signup and view all the answers

What is the term for the period of time when a muscle is not responding to a stimulus?

Refractory Period Signup and view all the answers

What type of muscle contraction occurs when the muscle contracts and changes length?

Isotonic Contraction Signup and view all the answers

What is the term for the continuous state of partial contraction of muscles?

Muscle Tone Signup and view all the answers

What is the term for the process of increasing the number of motor units activated to produce more precise movements?

Recruitment of Motor Units Signup and view all the answers

What type of muscle fibers are shorter and have a single, centrally located nucleus?

Smooth Muscle Fibers Signup and view all the answers

What is the term for the contraction of smooth muscle fibers that resembles skeletal muscle contraction?

Smooth Muscle Contraction Signup and view all the answers

What is the term for the network of cardiac muscle fibers that contract as a unit?

Branching Network Signup and view all the answers

What is the term for the ability of smooth muscle to change length without changing tautness?

Viscoelasticity Signup and view all the answers