Anatomy of a Muscle

The charged plasma membrane of a muscle fiber is called the __________.

The smallest part of a muscle fiber that can contract; made up of special myofilament proteins called actin and myosin.

When a muscle contracts, the smallest part that contracts is ___________________.

• Muscle fiber

• Myofilament

• Myofibril

• Sarcomere

The plasma membrane of a skeletal muscle cell is called the:

• sarcomere

• myofilament

• sarcolemma

• sarcoplasm

Which label is the muscle fiber?

• A

• B

• C

• D

Tags

NGSS.HS-LS1-4

What is another name ? (Hint: It is a muscle layer)

• Skeletal muscle

• Epimysium

• Perimysium

• Endomysium

Tags

NGSS.HS-LS1-2

Reorder the following from LARGEST structure down to smallest structure

• myofibril

• sarcomere

• fascicle

• muscle fiber

• muscle

Tags

NGSS.HS-LS1-2

A fascicle is made of many… (one step down)

• Muscle fibers

• Myofibrils

• Myofilaments

• Sarcomeres

A muscle fiber is made of many… (one step down)

• Fascicles

• Myofilaments

• Myofibrils

• Sarcomeres

A myofibril is made of many… (one step down)

• Myofilaments

• Myocytes

• Sarcomeres

• Fascicles