Biology ยท General Awareness

Skeletal and Muscular System

1,098 Questions

The skeletal and muscular system is a core topic in human biology. It covers the structure and function of bones, joints, and muscles. These concepts frequently appear in general science sections of various competitive exams. Master this topic to score higher.

Types of jointsHuman body bonesSkeletal fracturesMuscle anatomy

Skeletal and Muscular System Questions

Multiple choice

Bone fracture is a __________ disease

  1. physical

  2. infectious

  3. inherited

  4. mental
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

A bone fracture is a physical injury to the skeletal system, not caused by pathogens, inheritance, or mental health issues. It is categorized as a physical condition resulting from trauma.

Multiple choice

Which is the smallest bone in human body?

  1. Incus

  2. Malleus

  3. Stapes

  4. None of these
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

The stapes, also known as the stirrup, is the smallest and lightest bone in the human body, located in the middle ear.

Multiple choice

The three bones named malleus, inces and stapes are found in _________.

  1. external ear

  2. middle ear

  3. internal ear

  4. none of these
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

The malleus (hammer), incus (anvil), and stapes (stirrup) are the three ossicles of the middle ear that transmit sound vibrations from the eardrum to the inner ear. These are the smallest bones in the human body and form a chain that amplifies sound. The external ear has no bones, and the internal ear contains fluid-filled structures instead of bones.

Multiple choice

Which bone in the middle ear is connected with the ovel window?

  1. Malleus

  2. Incus

  3. Stapes

  4. None of these
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

The three ossicles of the middle ear are the malleus, incus, and stapes. The stapes, which is the innermost bone, connects directly to the oval window to transmit vibrations into the inner ear.

Multiple choice

The lowest pair of ribs in the human body is known as

  1. Additional ribs

  2. Floating ribs

  3. Xiphoid ribs

  4. Invasive ribs

Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

The 11th and 12th pairs of ribs are called floating ribs because they do not attach to the sternum or to the cartilage of other ribs.

Multiple choice

The reduction of bone density to a level that impairs the mechanical support is called

  1. Osteoporosis

  2. Osteoclast

  3. Osteomalacia

  4. Osteosenile malaise

Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Osteoporosis is a condition characterized by a significant reduction in bone density, which weakens the bone structure and increases the risk of fractures. Osteoclasts are cells that break down bone tissue, while osteomalacia refers to the softening of bones due to vitamin D deficiency.

Multiple choice

The bone marrow is composed of

  1. muscle fibre and adipose tissue

  2. areolar tissue and adipose tissue

  3. adipose tissue and calcified cartilage

  4. adipose tissue areolar tissue and blood vessels
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Bone marrow is a flexible tissue found in the interior of bones. Red bone marrow is composed of hematopoietic cells, reticular connective tissue, adipose tissue, and numerous blood vessels.

Multiple choice

Red bone marrow in the human adult is found in

  1. spongy bones of the cranial region only

  2. ribs, sternum, proximal extremities of femur and humerus

  3. vertebral centra only

  4. all the above locations
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

In adults, red bone marrow is found in the spongy bone of the ribs, sternum, vertebrae, pelvis, and the proximal ends of the femur and humerus.