1. What is the main function of the skeletal system?
(A) Digestion
(B) Transport of nutrients
(C) Support and protection of the body
(D) Hormone production
2. Which type of joint allows movement in all directions?
(A) Hinge joint
(B) Pivot joint
(C) Gliding joint
(D) Ball and socket joint
3. What type of muscle is found in the walls of the heart?
(A) Cardiac muscle
(B) Smooth muscle
(C) Skeletal muscle
(D) Voluntary muscle
4. Which mineral is essential for healthy bones?
(A) Iron
(B) Potassium
(C) Calcium
(D) Sodium
5. How many bones are there in the adult human body?
(A) 198
(B) 206
(C) 210
(D) 180
6. What connects bones to muscles?
(A) Ligaments
(B) Tendons
(C) Cartilage
(D) Nerves
7. Which type of muscle is under voluntary control?
(A) Skeletal muscle
(B) Cardiac muscle
(C) Smooth muscle
(D) Involuntary muscle
8. What is the function of ligaments?
(A) Connect muscles to bones
(B) Attach skin to muscles
(C) Connect bones to other bones
(D) Store calcium
9. What is the longest bone in the human body?
(A) Tibia
(B) Radius
(C) Humerus
(D) Femur
10. Where is the hinge joint found in the human body?
(A) Shoulder
(B) Knee
(C) Neck
(D) Hip