STRUCTURE OF MUSCLE

What are the 3 types of muscles?

• Skeletal, muscular, ligament
• Skeletal, smooth, cardiac
• Smooth, Cellular, Cerebrum
• Cardiac, smooth, brain stem

Skeletal muscles always work _____.

• in groups
• in pairs
• singly
• none of the above

A ______________________ attach bones to each other at joints.

• Ligament
• Bone
• Joint
• Cell

A ______ is a strong connective tissue that attaches muscle to bone.

• Tendon
• Ligament
• Cartilage

What is shown in the colored part of this diagram?

• a whole muscle

• five muscle fibers

• five muscle fascicles

• five myofibrils

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

• sarcolemma

• sarcoplasmic reticulum

• transverse tubules

• myofibril

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

What is the length between Z-lines of an actin molecule called?

• fascicle

• sarcomere

• myosin binding site

• sarcoplasmic length

Muscle Fiber Membrane

• Sarcolemma

• Sarcoplasm

• Sarcoplasmic Reticulum

thin filaments

• actin

• myosin