Muscular System

Which type of muscle tissue is voluntary and striated?

• skeletal

• cardiac

• smooth

• visceral

Which type of muscle tissue is involuntary and striated?

• skeletal

• smooth

• cardiac

• visceral

Which type of muscle tissue lines your digestive system?

• skeletal

• smooth

• cardiac

• visceral

When a muscle contracts, it gets _______.

• longer

• shorter

• thinner

• weaker

Tags

NGSS.HS-LS1-7

What structure in the muscle fiber stores calcium?

• sarcoplasm

• sarcolemma

• sarcoplasmic reticulum

• transverse tubules

What are the thin filaments in the myofibrils?

• actin

• myosin

• myoglobin

• Z lines

What are the thick filaments in the myofibrils?

• actin

• myosin

• myoglobin

• Z lines

The contractile, structural unit of the myofibril is called the _______.

• sarcolemma

• sarcoplasmic reticulum

• sarcoplasm

• sarcomere

The wasting away of muscle due to lack of use is called ______.

• dystrophy

• atrophy

• hypertrophy

• myalgia

The enzyme that breaks down the muscle cell neurotransmitter and ends the impulse is called _______.

• adrenaline

• acetylcholine

• adrenalinesterase

• acetylcholinesterase