Biology · General Awareness

Skeletal and Muscular System

1,141 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 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'.
Multiple choice biology skeleton, joints and muscles skeleton our skeletal system and the skin skeleton - movement and locomotion

Sigmoid notch of olecranon process is found in

  1. Tibius-fibula

  2. Femur

  3. Radius-ulna

  4. Humerus
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation
  • The forelimb is composed of the humerus, radius and ulna, carpals (wrist bones – 8 in number), metacarpals (palm bones – 5 in number) and phalanges (digits – 14 in number). Hence radius-ulna is bones of the forelimb.
  • The olecranon process is the near end of the ulna and it forms the pointed portion of the elbow.
  • Sigmoid notch is a large depression in the upper extremity of the ulna that fits the trochlea of the humerus (the bone directly above the ulna in the arm) as part of the elbow joint. It is formed by the olecranon and the coronoid process.
  • Hence sigmoid notch of the olecranon process is found in radius-ulna.
  • So, the correct answer is 'Radius-ulna'.
Multiple choice biology skeleton, joints and muscles skeleton our skeletal system and the skin skeleton - movement and locomotion

Trochanters occur in

  1. Humerus

  2. Femur

  3. Radio-ulna

  4. Tibio-fibula
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Trochanter is the bony prominences present toward the near end of the thighbone or femur. The trochanters are the points at which hip and thigh muscles attach. These trochanters usually serves as muscle attachment sites. So, the correct answer is 'Femur'. 

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

Biceps is attached with

  1. Radius

  2. Ulna

  3. Femur

  4. Both A and B
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation
The biceps is a muscle on the front part of the upper arm. The biceps includes a “short head” and a “long head” that work as a single muscle.
The biceps is attached to the arm bones by tough connective tissues called tendons. The tendons that connect the biceps muscle to the shoulder joint in two places are called the proximal biceps tendons. The tendon that attaches the biceps muscle to the forearm bones (radius and ulna) is called the distal biceps tendon. When the biceps contracts, it pulls the forearm up and rotates it outward.
So the correct answer is 'Radius and Ulna'.
Multiple choice biology skeleton, joints and muscles skeleton our skeletal system and the skin skeleton - movement and locomotion

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

  1. Bone elongation

  2. Growth of thickness of the bone

  3. Kemoaemng me shape at bone

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

Epiphyseal plate (hyaline cartilage) is formed between diaphysis and epiphysis. This contributes in bone elongation.

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
  • 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).
  • The olecranon is the near end of the ulna which forms the pointed portion of the elbow.
  • Hence ulceranon process occurs in ulna.
  • So, the correct answer is 'Ulna'.