Muscular System

Which of the following is primarily voluntary muscle?

• smooth
• cardiac
• skeletal
• all of these

Besides movement, what is another function of the muscular system?

• produce red blood cells
• maintain water balance
• generate body heat
• produce ATP

Muscle fibers are made of individual:

• myofilaments
• sarcolemma
• fascicles
• nerves

Tendons...

• connect bones to bones
• connect muscles to bones
• connect muscles to muscles
• surround muscle fibers

Muscle fibers are arranged in bundles called:

• sarcomeres
• vesicles
• motor units
• fascicles

The muscle fiber membrane is called the:

• vesicle
• sarcolemma
• endomysium
• sarcomere

What cellular organelle provides the ATP needed for muscle contraction?

• golgi apparatus
• endoplasmic reticulum
• mitochondria
• nucleus

Tags

NGSS.HS-LS1-7

An individual myofibril is surrounded by:

• epimysium
• endomysium
• perimysium
• myoplasma

The dark bands are called the ___ bands, whereas the light bands are called the _____ bands.

• A, I
• I, A
• A, Z
• Z, I

The sliding filament model explains:

• how muscles contract
• the interaction of muscles and neurons
• how ATP is created
• how muscles become fatigued