Which of the following best describes the Size Principle of motor unit recruitment

Recruited from smallest --> largest motor units

All motor units are recruited in unison

Recruited from largest --> smallest motor units

Increasing the strength of an overall muscle contraction can be achieved by:

Increasing the frequency of action potentials sent through the motor neurons

Increasing the amount of available ATP

Increasing the amount of available oxygen

Decreasing the carbon dioxide concentration

This quizizz does not contain the steps over the Sliding Filament Theory of muscle contraction..know this. (You will be required to put these steps in the correct order)

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Which of the following best describes a Type-1 muscle fiber

Slow contraction rate. Highly fatigue resistant

Fast Contraction Rate. Fatigues quickly

Increasing the strength of an overall muscle contraction can be achieved by:

Increasing the number of motor units being recruited

Increasing the amount of available ATP

Increasing the amount of available oxygen

Decreasing the carbon dioxide concentration

Which of the following best describes a Type 2B muscle fiber

Very few mitochondria with an anaerobic metabolism

High density of Mitochondria with an aerobic metabolism

Which of the following activities would best utilize Type 2A muscle fibers?

Sprinting up two flights of stairs when you are late for class

Completing 1 rep of the heaviest Squat you can perform. (Maximal effort)

Muscle fatigue is mostly due to:

Ion loss to diffusion shutting down the signaling pathway

Energy loss due to mitochondria degradation

Genetic mutations as a result of an overly acid environment

Lactic Acid causing denaturation of the myosin proteins

Increase in the size of the cells in a tissue

Increase in the number of cells within a tissue

Decrease in the size of the cells in a tissue

Decrease in the number of cells within a tissue

Increase in the number of cells within a tissue

Increase in the size of the cells in a tissue

Decrease in the size of the cells in a tissue

Decrease in the number of cells within a tissue

Decrease in the size of the cells in a tissue

Increase in the size of the cells in a tissue

Increase in the number of cells within a tissue

Decrease in the number of cells within a tissue

Which of the following is NOT a way that skeletal muscle tissue responds to increased stress

Increase in the number of muscle cells within the organ

Increased in the number of Myofibrils within the muscle fibers

Increase in the amount of Sarcoplasm within the muscle fiber

Increase in the number of Mitochondria within the muscle fiber

Which of the following is NOT a location within the body in which we find Smooth Muscle?

Within the walls of the digestive tract

Within the walls of the blood vessels

Within the walls of the respiratory tract

Muscular System Physiology

Authored by Byron Strohm

10th - 12th Grade

Used 115+ times

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MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which of the following is NOT a type of muscle tissue?

Cartilagenous

Skeletal

Smooth

Cardiac

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which of the following types of muscle tissue do NOT contain striations

Skeletal

Cartilagenous

Smooth

Cardiac

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Contractile organelles within Skeletal Muscle Tissue which contains sarcomeres

Myofibrils

Muscle Fibers

Fascicle

Sarcolemma

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

A single contractile unit made up of thick myosin and thin actin filaments within a myofibril

Sarcomere

Myomere

Sarcofibril

Muscle Fiber

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

The thick filaments within a sarcomere which contain protrusions with club-shaped heads. (Pull on the thin filaments.)

Actin

Myosin

Sarcosin

Myotin

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

The thin filaments within a sarcomere which are pulled on by the thick filaments.

Actin

Myosin

Sarcosin

Myotin

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Skeletal muscles are only able to _____ on bones

Pull

Push

Stretch

Relax

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Muscular System Physiology

Which of the following is NOT a type of muscle tissue?

Which of the following types of muscle tissue do NOT contain striations

Contractile organelles within Skeletal Muscle Tissue which contains sarcomeres

A single contractile unit made up of thick myosin and thin actin filaments within a myofibril

The thick filaments within a sarcomere which contain protrusions with club-shaped heads. (Pull on the thin filaments.)

The thin filaments within a sarcomere which are pulled on by the thick filaments.

Skeletal muscles are only able to _____ on bones

Which of the following ions binds to troponin during a muscle contraction?

Which of the following proteins rests on the actin filaments, blocking the myosin binding sites?

Which structure within a skeletal muscle cell contains calcium channels which are stimulated through electrical impulses?

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