Biology · 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 biology our skeletal system and the skin bones and movements joints in the human body joints

Human skeleton altogether contains 206 bones. Some bones are fused in adults, an example of fused bones would be   

  1. Coccyx

  2. Ear ossicles

  3. Carpals

  4. Metacarpals
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation
  • The coccyx, commonly referred to as the tailbone, is the final segment of the vertebral column in all apes, and analogous structures in certain other mammals.
  •  Depending on an individual's development, the coccyx may consist of three to five different bones connected by fused or semi-fused joints and/or disc-like ligaments.
  •  The individual bones also fuse together to form a single coccyx throughout adulthood. Hence, Human skeleton altogether contains 206 bones. Some bones are fused in adults, an example of fused bones would be  Coccyx.
    • So, the correct answer is 'Coccyx'.
Multiple choice biology our skeletal system and the skin bones and movements joints in the human body joints

Smallest bone in the body of humans is 

  1. Incus

  2. Stapes

  3. Malleus

  4. Maxilla
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Stapes is the third bone of ear ossicles in the middle ear. It is the smallest bone measuring 3*2.5mm roughly. 

Incus and malleus are the other two ear ossicles in middle ear larger than stapes.
The maxilla is the bone that holds the upper teeth. It is bigger than Stapes.
So the correct option is B.

Multiple choice biology our skeletal system and the skin bones and movements joints in the human body joints

Which of the following bones are the longest in the body?

  1. Two fibulas

  2. Two femurs

  3. Two tibias

  4. Two ulnas
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

The head of the femur articulates with the acetabulum in the pelvic bone forming the hip joint, while the tibia and kneecap forming the knee joint. By most measures, the femur is the strongest bone in the body. The femur is also the longest bone in the human body.

So, the correct option is 'Two femurs'.

Multiple choice biology our skeletal system and the skin bones and movements joints in the human body joints

Haversian canal is present in all of the following except

  1. Diaphysis (compact) bone of rabbit

  2. Epiphysis (spongy bone) of rabbit

  3. Diaphysis (compact) bone of frog

  4. Both (2) & (3)
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Haversian Canals are the features of the compact long bones of mammals. These are centrally located and supply nerves and blood vessels to the osteocytes of bones. The Epiphysis of rabbit and diaphysis of frog do not show the Haversian Canals.

Hence, the correct answer is 'Both (2) and (3)'.

Multiple choice biology our skeletal system and the skin bones and movements joints in the human body joints

Which of the following statements are incorrect regarding a normal human?
(i) The skull is dicondylic.
(ii) Metacarpals are five in numbers.
(iii) Patella is a cup-shaped bone covering the knee dorsally.
(iv) Scapula is a large triangular flat bale, situated on the ventral side of the thorax.
(v) The pelvic girdle has two coxal bones.

  1. (i) and (v)

  2. (i) and (ii)

  3. (ii) and (v)

  4. (iii) and (iv)
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Following statements are incorrect regarding a normal human: 

(i) Patella is a cup-shaped bone covering the knee dorsally.
(ii) Scapula is a large triangular flat bone, situated on the ventral side of the thorax.
So, the correct answer (d).

Multiple choice biology our skeletal system and the skin bones and movements joints in the human body joints

In birds, 6-10 caudal vertebrae are usually fused to form

  1. Sesamoid bone

  2. Odontoid process

  3. Plowshare bone

  4. Synsacrum
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

The body of the bird is adapted for flight. One of the key adaptions for this is the fusing of bones into single ossification.The compound structure present in the birds vertebral column is called the synsacrum and is formed by the fusion of 14 to 16 vertebrae. The last part of the synsacrum is formed by the fusion of the caudal vertebrae

Multiple choice biology our skeletal system and the skin bones and movements joints in the human body joints

Patella is a kind of

  1. Cartilage bone

  2. Membrane bone

  3. Cartilage

  4. Sesamoid bone
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

A bone which is embedded in the tendon is known as sesamoid bone. Patella is a the largest sesamoid bone which articulates with the femur (thigh bone) and covers and protects the anterior articular surface of the knee joint. 

So, the correct answer is 'Sesamoid bone'.

Multiple choice biology our skeletal system and the skin bones and movements joints in the human body joints

Epiphyseal disks, which are present at the ends of the long bones are responsible for

  1. Bone elongation

  2. Growth of thickness of the bone

  3. Remodelling the shape of bone

  4. Formation of Haversian system
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

At the ends of each long bone are present epiphyses which are covered with hyaline cartilage. The longitudinal growth of long bones is due to the endochondral ossification of the epiphyseal plate and is stimulated by the production of the growth hormone.
Therefore, the correct answer is option A.

Multiple choice biology our skeletal system and the skin bones and movements joints in the human body joints

What is the term used for the opening or hole in a bone?

  1. Process

  2. Fossa

  3. Foramen

  4. Tubercle
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

The foramen is the hole is an opening or groove in the bone that allows blood vessels and nerve to enter the bone. It i1s one of the several ovals or circular openings in the base of the skull.

So, the correct option is 'Foramen'.

Multiple choice biology our skeletal system and the skin bones and movements joints in the human body joints

Total number of bones in axial skeleton of man are

  1. 206

  2. 120

  3. 406

  4. 80
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

The axial skeleton is the part of the skeleton that consists of the bones of the head and trunk of a vertebrate.

It consists of 80 bones and is composed of six parts; the skull bones, the ossicles of the middle ear, the hyoid bone, the rib cage, sternum and the vertebral column.
Skull has 28 bones - 8 cranial bones, 14 facial bones and 6 ossicles of middle ear.
Hyoid is single bone.
Vertebral column consists of 26 bones - 7 cervical vertebrae, 12 thoracic vertebrae, 5 lumbar vertebrae, 1 sacrum and 1 coccyx.
Thoracic cage consists of 1 sternum and 24 ribs. 
So, the correct answer is '80'

Multiple choice biology our skeletal system and the skin bones and movements joints in the human body joints

Thoracic cage in rabbit is made up of

  1. Ribs, vertebral column and diaphragm.

  2. Ribs, diaphragm and sternum.

  3. Vertebral column, diaphragm and sternum.

  4. Ribs, vertebral column and sternum.
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

In mammals, like rabbit and humans thoracic vertebrae, ribs and sternum together form the rib cage. In humans, the rib cage, also known as the thoracic cage, is a bony and cartilaginous structure which surrounds the thoracic cavity and supports the pectoral girdle (shoulder girdle), forming a core portion of the human skeleton. A typical human rib cage consists of 24 ribs, the sternum (with xiphoid process), costal cartilages, and the 12 thoracic vertebrae. 

Multiple choice biology our skeletal system and the skin bones and movements joints in the human body joints

Scapula is a large triangular flat bone situated in the dorsal part of the thorax between

  1. The second and fifth rib

  2. The second and seventh rib

  3. The third and sixth rib

  4. The third and eighth rib

  5. The fourth and seventh rib
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

The scapula is commonly referred to as the shoulder blade. It connects the humerus bone of the arm to the collarbone. It is located between the second and seventh ribs.