Muscle Packaging

Which of the following describes muscle bundles? 

• Long, multi-nucleated, thread-like cells

• Set of muscle fibers grouped together 

• Considered to the cell of the muscle 

• Organelles which are unique to muscle tissue

Tags

NGSS.HS-LS1-2

Name the following in order from largest to smallest:

• muscle, muscle fascicle, muscle cell, myofibril, filaments

• muscle, muscle fascicle, muscle cell, filaments, myofibril

• muscle, muscle cell, muscle fascicle, myofibril, filaments

• muscle, muscle cell, muscle fascicle, filaments, myofibril

Tags

NGSS.HS-LS1-2

What is labeled "4" (the blue/purple part) in the diagram?

• sarcolemma

• sarcoplasmic reticulum

• transverse tubules

• myofibril

Which of the following structures is responsible for the contraction of muscles?

• Sarcomere

• Myelin sheath

• Neuron

• Synapse

What is the primary protein found in muscle fibers responsible for contraction?

• Keratin

• Collagen

• Actin

• Elastin

Which connective tissue layer surrounds individual muscle fibers?

• Endomysium

• Perimysium

• Epimysium

• Fascia

What is the role of myoglobin in muscle cells?

• Stores calcium ions

• Transports oxygen

• Breaks down glucose

• Synthesizes proteins

Which of the following is the smallest functional unit of a muscle fiber?

• Myofibril

• Sarcomere

• Muscle fascicle

• Muscle bundle

What type of muscle tissue is under voluntary control?

• Cardiac muscle

• Smooth muscle

• Skeletal muscle

• Involuntary muscle

Which ion is essential for muscle contraction?

• Sodium

• Potassium

• Calcium

• Magnesium