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 skeleton skeleton, joints and muscles skeleton - movement and locomotion

Longest bone of human skeleton is

  1. Femur

  2. Humerus

  3. Tibia

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

In humans, each limb is made of 30 bones. The bones of the legs (hind limb) are femur (thigh bone, the longest bone), tibia and fibula, tarsals (ankle bones 7 in number), metatarsals (5 in number) and phalanges (digits 14 in number). A cup-shaped bone, called as patella covers the knee ventrally (knee cap).

Multiple choice biology skeleton, joints and muscles skeleton our skeletal system and the skin skeleton - movement and locomotion

Patella groove is found on which bone of the following?

  1. Femur

  2. Tibio-fibula

  3. Depression between femur and tibia-fibula

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

The bone surface is not smooth but scarred with bumps, holes and ridges. These are surface markings, where muscles, tendons and ligaments attached, blood and lymph vessels and nerves pass. Depression and openings are
(1) Fissure- narrow, cleft like opening between adjacent parts of bone. Example, Supra of orbital fissure.
(2) Foramen- a bigger, round opening. Example, foramen magnum.
(3) Meatus- a relatively narrow tubular canal. Example, external auditory meatus .
(4) Groves and sulcus- are deep furrow on the surface of a bone or other structure. Example, inter-vertebral and radial grooves of humerus.
(5) Fossa- shallow depressed area. Example, mandibular fossa.

Multiple choice biology skeleton, joints and muscles skeleton our skeletal system and the skin skeleton - movement and locomotion

Structure responsible for formation of semilunar notch is

  1. Olecranon process of humerus

  2. Olecranon process of femur

  3. Olecranon process of radius ulna

  4. Olecranon process of tibia fibula
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

The semilunar notch or the trochlear notch as it is commonly referred to is a  greater sigmoid cavity formed by a large depression in the upper extremity of the ulna. This fits the trochlea of the humerus and becomes  a part of the elbow joint. This is formed by the olecranon and the coronoid process. Thus, the correct answer is option C.

Multiple choice biology skeleton, joints and muscles skeleton our skeletal system and the skin skeleton - movement and locomotion

Greater trochanter occurs in

  1. Humerus

  2. Radius

  3. Ulna

  4. Femur
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation
The greater trochanter (great trochanter) of the femur is a large, irregular, quadrilateral eminence and a part of the skeletal system.
It is directed lateral and medially and slightly posterior. In the adults, it is about 1 cm lower than the head. Because the pelvic outlet in the female is larger than in the male, there is a greater distance between the greater trochanters in the female.
It has two surfaces and four borders. It is a traction epiphysis.
Multiple choice biology skeleton, joints and muscles skeleton our skeletal system and the skin skeleton - movement and locomotion

Olecranon process occurs in

  1. Femur

  2. Radius

  3. Humerus

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

In humans, each limb is made of 30 bones. The bones of the hand (forelimb) are humerus, radius and ulna, carpals (wrist bones 8 in number), metacarpals (palm bones 5 in number) and phalanges (digits 14 in number). Olecranon process is the process of the ulna that forms the outer bump of the elbow and fits into the fossa of the humerus when the arm is extended.

So, the correct answer is option D.

Multiple choice biology skeleton, joints and muscles skeleton our skeletal system and the skin skeleton - movement and locomotion

Number of bones present in forelimb of human is

  1. 30

  2. 32

  3. 35

  4. 40
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

The bones of the limbs along with their girdles constitute the appendicular skeleton. Each limb is made of 30 bones. The bones of the hand (forelimb) are humerus, radius and ulna, carpals (wrist bones 8 in number), metacarpals (palm bones 5 in number) and phalanges (digits 14 in number).

Multiple choice biology skeleton, joints and muscles skeleton our skeletal system and the skin skeleton - movement and locomotion

The shoulder blade is made up of

  1. Clavicle

  2. Humerus

  3. Ilium

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

The human shoulder is made up of three bones: the clavicle also known as collarbone, the scapula also known as shoulder blade, and the humerus.

Scapula connects the humerus with the clavicle. It is a flat bone, almost triangular in shape. There are many important muscles like Pectoralis Minor, Trapezius, Deltoid, Teres Minor and Teres Major are joined with Scapula. Hence option D is correct.

Multiple choice biology skeleton, joints and muscles skeleton our skeletal system and the skin skeleton - movement and locomotion

Which one among the following is a bone of forelimb?

  1. Humerus

  2. Femur

  3. Tibia

  4. Fibula
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation
  • The forelimb comprises of humerus, radius, ulna, carpals, metacarpals, and phalanges.
  • The humerus is the long bone in the upper arm. It is located between the shoulder and the elbow joint. At the shoulder, the humerus connects to the frame of the body via the glenoid fossa of the scapula. Hence humerus is a bone of forelimb.
  • So, the correct answer is 'Humerus'.
Multiple choice biology skeleton, joints and muscles skeleton our skeletal system and the skin skeleton - movement and locomotion

Shank contains a bone known as 

  1. Radio-ulna

  2. Tibio-fibula

  3. Humerus

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

There are two bones in the shank area which are the tibia and fibula. The fibula is smaller and thinner than the tibia. These two bones connect the ankle to the knee and work together to stabilize the ankle and provide support to the muscles of the lower leg. So, the correct answer is 'Tibia-fibula'.

Multiple choice biology skeleton, joints and muscles skeleton our skeletal system and the skin skeleton - movement and locomotion

Trochlea of humerus articulates with the

  1. Glenoid cavity

  2. Sigmoid notch

  3. Acetabulum

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

In the human arm, the trochlea of the humerus is the medial portion of the articular surface of the elbow joint which articulates with the trochlear notch or sigmoid notch on the ulna in the forearm. 

So, the correct answer is 'sigmoid notch'.

Multiple choice biology skeleton, joints and muscles skeleton our skeletal system and the skin skeleton - movement and locomotion

A deltoid ridge occurs in

  1. Radius

  2. Ulna

  3. Femur

  4. Humerus
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation
  • The forelimb comprises of humerus, radius, ulna, carpals, metacarpals, and phalanges.
  • The humerus is the long bone in the upper arm. It is located between the shoulder and the elbow joint.
  • The roughly triangular area on the anterolateral (front-side) surface of the middle of the humerus is called as the deltoid ridge. The deltoid muscle is attached to the deltoid ridge. Hence a deltoid ridge occurs in the humerus.
  • So, the correct answer is 'Humerus'.
Multiple choice biology skeleton, joints and muscles skeleton our skeletal system and the skin skeleton - movement and locomotion

Number of bones present in an arm is

  1. 30

  2. 32

  3. 35

  4. 40
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation
  • Each arm is made of 30 bones. The bones of the hand (forelimb) are humerus, radius and ulna, carpals (wrist bones – 8 in number), metacarpals (palm bones – 5 in number) and phalanges (digits – 14 in number).
  • Hence the number of bones present in an arm is '30'.
  • So, the correct answer is '30'.
Multiple choice biology skeleton, joints and muscles skeleton our skeletal system and the skin skeleton - movement and locomotion

Greater trochanter occurs in

  1. Humerus

  2. Radius

  3. Ulna

  4. Femur
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation
  • Lower limb comprises of 32 bones. They are hip bone (1), femur (1), patella (1), tibia (1), fibula (1), tarsals (8), metatarsals (5), proximal phalanges (5), intermediate phalanges(5) and distal phalanges (4).
  • Greater trochanter of the femur is quadrilateral elevation, projecting upward from the lateral aspect of the junction of neck and shaft. Hence greater trochanter occurs in the femur.
  • So, the correct answer is 'Femur'.