5.14 Knowledge Check

1. Which of the following muscle types is under voluntary control?

• Smooth muscle
• Cardiac muscle
• Skeletal muscle
• Visceral muscle

2. What is the correct pairing for muscle attachment terms?

• Origin – more movable; Insertion – fixed
• Origin – distal; Insertion – proximal
• Origin – fixed; Insertion – movable
• Origin – external; Insertion – internal

3. What action occurs during an eccentric muscle contraction?

• The muscle shortens
• The muscle lengthens
• The muscle remains the same length
• The muscle twists

4. Which of the following muscles is part of the rotator cuff?

• Deltoid
• Gluteus Maximus
• Supraspinatus
• Rectus Abdominis

5. Which action is the quadriceps muscle group primarily responsible for?

• Elbow flexion
• Hip abduction
• Knee extension
• Shoulder rotation

6. What does the term “rectus” indicate in a muscle’s name?

• Diagonal fibre direction
• Located near the spine
• Straight fibre direction
• Circular shape

7. Which muscle is primarily responsible for plantarflexion?

• Tibialis Anterior
• Gastrocnemius
• Deltoid
• Biceps Brachii

Correct Answers: 

1. Skeletal muscle
2. Origin – fixed; Insertion – movable
3. The muscle lengthens
4. Supraspinatus
5. Knee extension
6. Straight fibre direction
7. Gastrocnemius