Muscle and Nervous System Worksheet

What is the primary function of cardiac muscle?

• Voluntary movement

• Rhythmic and continuous contraction

• Propelling contents through intestines

• Changing the shape of the lens

Where are intercalated discs found?

• Skeletal muscle

• Smooth muscle

• Cardiac muscle

• Eye muscles

Which branch of the nervous system controls skeletal muscle?

• Autonomic

• Somatic

• Sympathetic

• Parasympathetic

What is the role of acetylcholine (ACh) in muscle contraction?

• Provides energy

• Excites the muscle cell

• Stops the contraction

• Changes the muscle shape

Which type of muscle is responsible for peristalsis?

• Cardiac muscle

• Skeletal muscle

• Smooth muscle

• Diaphragm

What is the origin of the biceps muscle?

• Radius

• Scapula

• Humerus

• Ulna

How are skeletal muscle fibres described?

• Short and spindle-shaped

• Striated and cylindrical

• Involuntary and joined by discs

What happens when a skeletal muscle contracts?

• The origin moves towards the insertion

• The insertion moves towards the origin

• Both origin and insertion move away

• The muscle elongates

Which muscle type contains the most mitochondria?

• Smooth muscle

• Skeletal muscle

• Cardiac muscle

• Eye muscles

Which term refers to muscle attachment to a movable bone?

• Ligament

• Origin

• Insertion

• Tendon