Muscles and Joints Review

Which term describes muscle tissue that appears striped when viewed under a microscope?

• Striated muscle

• Smooth muscle

• Cardiac muscle

• Elastic muscle

Match each muscle control type to its description.

• Consciously controlled contractions via neurons

• Voluntary muscle

• Automatically controlled by the nervous system

• Striated muscle

• Looks striped under a microscope

• Involuntary muscle

A coach claims breathing during a sprint is a voluntary action because athletes choose their pace. Use the definitions of muscle control to evaluate this claim and select the best conclusion.

• Breathing is primarily involuntary despite conscious pacing

• Breathing is fully voluntary during intense exercise

• Breathing stops being controlled by the nervous system

• Breathing has no muscular involvement during running

Tags

NGSS.HS-LS1-3

Which statement best defines skeletal muscle?

• Muscle with stripes attached to bones for movement

• Muscle without stripes controlling internal organ walls

• Muscle with stripes pumping blood through the heart

• Muscle without stripes moving food along intestines

A student raises her hand to ask a question. Which characteristic of skeletal muscle directly enables this action?

• It is voluntary and under conscious control

• It is involuntary and always contracting

• It lacks striations and contracts slowly

• It lines organs and moves substances

A lab photo shows a muscle fiber with clear striations. It is connected to a tendon at a bone. Which conclusion is most justified?

• It is skeletal muscle enabling movement

• It is smooth muscle lining vessels

• It is cardiac muscle forming heart walls

• It is connective tissue storing fat

Which feature best distinguishes smooth muscle from skeletal muscle?

• Non-striated fibers and involuntary control

• Heavily striated fibers and voluntary control

• Non-striated fibers and voluntary control

• Heavily striated fibers and involuntary control

A drug temporarily paralyzes involuntary muscle in the digestive tract. Which immediate effect is most likely?

• Reduced peristaltic waves and slowed digestion

• Stronger voluntary contractions in intestines

• Increased striations visible in gut tissue

• No change because digestion is voluntary

Which statement accurately describes smooth muscle function in vessels and organs?

• Contracts in waves to propel contents and regulate flow

• Contracts in twitches to move bones at joints

• Contracts only when consciously commanded by brain

• Contracts with visible striations to store oxygen

Which statement best describes cardiac muscle tissue?

• Striated and involuntary, found only in the heart

• Non-striated and voluntary, found in many organs

• Striated and voluntary, found in the limbs

• Non-striated and involuntary, found in blood vessels