4.1 Muscle Structure & Function

Multiple Choice

Each of the following is a major function of muscle EXCEPT...

• Excitability

• Producing Movement

• Stabilizes the Joints

• Generates Heat

Multiple Choice

The shortening of muscle is referred to as...

• Excitability

• Contractility

• Extensibility

• Elasticity

Multiple Select

Which muscle cell type(s) contain striations?

• Smooth

• Skeletal

• Cardiac

Multiple Select

Which muscle cell type(s) are voluntary?

• Smooth

• Skeletal

• Cardiac

Multiple Choice

Thin filaments contain...

• Actin

• Myosin

Multiple Choice

A myofibril is composed of units called..

• Sarcolemmas

• Sarcomeres

• Sarcoplasmic Reticulum

• Striations

Multiple Choice

Myosin connect at the M line of the _.

• A-band

• I-band

Multiple Choice

The z disc is where _ intersect.

• Actin

• Myosin

Multiple Choice

The dark portion of the striations is formed by _.

• A-band

• I-band

Multiple Choice

Thick filaments contain

• Actin

• Myosin

Open Ended

Describe the sliding filament model of muscle contraction.

Multiple Select

A muscle contains which of the following?

• Nerve

• Vein

• Muscle Fiber

• Artery

Multiple Choice

The insertion of muscle connect to _ bone

• the movable

• the immovable

Multiple Choice

Outer coat covering entire muscle

• Epimysium

• Perimysium

• Endomysium