Muscle Retake

What is the name of the thick myofilaments?

• Actin
• Myosin
• Myoglobin
• Titan

The contractile unit of a muscle is called the __________.

• Sarcolemma
• Sarcoplasmic reticulum
• Sarcoplasm
• Sarcomere

What two chemicals are necessary for muscle contraction to occur?

• Niacin and Potassium

• Calcium and Acetylcholine (Ach)

• Sodium and Potassium

• Acetylcholine (Ach) and Potassium

Region where a motor neuron comes in close contact with a muscle cell.

• neurotransmitter
• muscular dystrophy
• muscle tension
• neuromuscular junction

Structure #1

• endomysium

• perimysium

• epimysium

• tendon

A fascicle is made up of many?

• Muscle Fibers

• Fasicles

• Myofibrils

• Cells

What are the three types of muscles?

• Cardiac, Elastic, Smooth
• Smooth, Curly, Skeletal
• Smooth, Cardiac, Skeletal
• None of the above

List the structures of a muscle from smallest to largest

• filament, fiber, fascicle, muscle

• fascicle, muscle, filament, fiber

• fascicle, sarcomere, muscle, fiber

• filament, muscle, fascicle, sarcomere

This type of muscle tissue is attached to bones and helps control voluntary movement

• Skeletal
• Cardiac
• Smooth

This type of muscle tissue is found in the walls of hollow organs such as the stomach and is not under conscious control.

• Skeletal

• Cardiac

• Smooth