Q.1 Which of the following bones is part of the axial skeleton?
Femur
Humerus
Vertebra
Scapula
Explanation - The axial skeleton includes bones of the skull, vertebral column, and rib cage. Vertebrae are part of the vertebral column.
Correct answer is: Vertebra
Q.2 Which type of joint allows the widest range of motion?
Hinge joint
Ball-and-socket joint
Pivot joint
Saddle joint
Explanation - Ball-and-socket joints, like the shoulder and hip, allow movement in multiple directions including rotation.
Correct answer is: Ball-and-socket joint
Q.3 The main function of red bone marrow is to:
Store fat
Produce blood cells
Provide structural support
Store calcium
Explanation - Red bone marrow produces red blood cells, white blood cells, and platelets.
Correct answer is: Produce blood cells
Q.4 Which cranial bone forms the forehead?
Frontal bone
Parietal bone
Temporal bone
Occipital bone
Explanation - The frontal bone forms the forehead and the upper part of the eye sockets.
Correct answer is: Frontal bone
Q.5 Which of the following muscles is primarily responsible for flexion of the elbow?
Biceps brachii
Triceps brachii
Deltoid
Pectoralis major
Explanation - The biceps brachii flexes the forearm at the elbow joint.
Correct answer is: Biceps brachii
Q.6 Which type of bone is the vertebra classified as?
Long bone
Short bone
Irregular bone
Flat bone
Explanation - Vertebrae have complex shapes and are classified as irregular bones.
Correct answer is: Irregular bone
Q.7 The patella is an example of which type of bone?
Long bone
Short bone
Sesamoid bone
Flat bone
Explanation - The patella is a sesamoid bone, which develops within tendons to protect them and improve leverage.
Correct answer is: Sesamoid bone
Q.8 Which structure connects muscles to bones?
Ligament
Tendon
Cartilage
Fascia
Explanation - Tendons attach muscles to bones, enabling movement.
Correct answer is: Tendon
Q.9 Which of the following is NOT part of the appendicular skeleton?
Clavicle
Scapula
Femur
Sternum
Explanation - The sternum is part of the axial skeleton, while the clavicle, scapula, and femur are part of the appendicular skeleton.
Correct answer is: Sternum
Q.10 Which type of cartilage covers the ends of long bones in a joint?
Hyaline cartilage
Fibrocartilage
Elastic cartilage
Calcified cartilage
Explanation - Hyaline cartilage forms smooth surfaces at joint ends to reduce friction and absorb shock.
Correct answer is: Hyaline cartilage
Q.11 Which part of the neuron receives signals from other neurons?
Axon
Dendrite
Cell body
Synaptic terminal
Explanation - Dendrites are branched extensions that receive signals from other neurons.
Correct answer is: Dendrite
Q.12 Which of the following muscles is involuntary?
Biceps brachii
Cardiac muscle
Quadriceps
Deltoid
Explanation - Cardiac muscle contracts involuntarily to pump blood through the heart.
Correct answer is: Cardiac muscle
Q.13 The scapula articulates with which bone to form the shoulder joint?
Humerus
Clavicle
Radius
Ulna
Explanation - The glenoid cavity of the scapula articulates with the head of the humerus to form the shoulder joint.
Correct answer is: Humerus
Q.14 Which bone forms the posterior portion of the skull?
Occipital bone
Parietal bone
Temporal bone
Frontal bone
Explanation - The occipital bone forms the back and base of the skull.
Correct answer is: Occipital bone
Q.15 Which type of muscle fiber is specialized for endurance and sustained activity?
Type I fibers
Type IIa fibers
Type IIb fibers
Type III fibers
Explanation - Type I (slow-twitch) fibers have high endurance, rich in mitochondria, and are fatigue-resistant.
Correct answer is: Type I fibers
Q.16 Which structure stabilizes joints by connecting bones to bones?
Tendon
Ligament
Cartilage
Fascia
Explanation - Ligaments connect bones to bones, providing joint stability.
Correct answer is: Ligament
Q.17 Which bone is commonly known as the collarbone?
Clavicle
Scapula
Sternum
Humerus
Explanation - The clavicle, or collarbone, connects the arm to the trunk of the body.
Correct answer is: Clavicle
Q.18 Which bone forms the lower jaw?
Mandible
Maxilla
Zygomatic
Temporal
Explanation - The mandible is the largest and strongest facial bone forming the lower jaw.
Correct answer is: Mandible
Q.19 Which type of joint is found between the carpal bones of the wrist?
Plane joint
Hinge joint
Pivot joint
Condyloid joint
Explanation - Plane joints allow gliding movements and are found between the carpal bones.
Correct answer is: Plane joint
Q.20 Which organelle is most abundant in skeletal muscle cells due to high energy demands?
Mitochondria
Nucleus
Ribosome
Lysosome
Explanation - Skeletal muscle cells have abundant mitochondria to meet high ATP requirements.
Correct answer is: Mitochondria
Q.21 Which vertebrae support the head and allow nodding motion?
C1 and C2
T1 and T2
L1 and L2
S1 and S2
Explanation - The atlas (C1) and axis (C2) cervical vertebrae support the skull and enable nodding and rotation.
Correct answer is: C1 and C2
Q.22 Which connective tissue connects muscle to bone and improves mechanical leverage?
Tendon
Ligament
Cartilage
Aponeurosis
Explanation - Tendons attach muscles to bones, transmitting force to produce movement.
Correct answer is: Tendon
Q.23 Which bone is part of both the appendicular skeleton and forms the shoulder girdle?
Scapula
Humerus
Radius
Ulna
Explanation - The scapula is part of the appendicular skeleton and forms the shoulder girdle with the clavicle.
Correct answer is: Scapula
Q.24 Which of the following bones is classified as a flat bone?
Sternum
Femur
Vertebra
Patella
Explanation - Flat bones provide protection and a broad surface for muscle attachment. The sternum is an example.
Correct answer is: Sternum
Q.25 Which muscle is responsible for extension of the knee?
Quadriceps femoris
Hamstrings
Gastrocnemius
Tibialis anterior
Explanation - The quadriceps femoris extends the leg at the knee joint.
Correct answer is: Quadriceps femoris