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

Glenoid cavity is associated with

  1. Scapula

  2. Humerus

  3. Femur

  4. Both A and B
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation
  • A pectoral girdle or shoulder girdle attach the bones of upper limb to the axial skeleton.
  • Each pectoral girdle is formed of two halves. Each half of pectoral girdle consists of a scapula and clavicle. 
  • Glenoid cavity is a shallow, pyriform articular surface, which is located on the lateral angle of the scapula. It articulates with the humerus to form the shoulder joint. Hence glenoid cavity is associated with scapula and humerus.
  • So,the correct answer is 'Both A and B'.
Multiple choice biology skeleton, joints and muscles skeleton our skeletal system and the skin skeleton - movement and locomotion

Humerus bone is present in the

  1. Upper arm

  2. Lower arm

  3. Lower jaw

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

The humerus is the single bone of the upper arm region. It articulates with the radius and ulna bones of the forearm to form the elbow joint. Distally, the humerus becomes flattened. The much smaller lateral epicondyle of the humerus is found on the lateral side of the distal humerus.

So, the correct option is 'Upper arm'.

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

One of the following is a sesamoid bone in man?

  1. Periotic

  2. Ramus

  3. Clavicle

  4. Patella
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation
A bone embedded in the tendon is known as a sesamoid. They are usually found in the joints of the body. The patella in the knee of a man is the largest sesamoid bone present in the human body.
So, the correct answer is 'Patella'.

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

A curved bone is structurally designed to

  1. Accommodate easily in body

  2. Absorb the stress of the body weight at several different points so that the stress is evenly distributed

  3. Provide more area for attachment of muscles

  4. All of the above
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

 Long bones are longer than they are wide and they are slightly curved for strength.
– A bone that is curved is structurally able to absorb the stress of the body at several points so the stress will be evenly distributed.
– The straight bone would not be able to evenly distribute the weight of the body and the bone would break more easily.
– Long bones are shaped like tubes with rounded ends that are designed to fit into other bones to form joints.
– The ends of long bones are filled with spongy bone; this makes them light but strong.
– Long bones can be found in the thigh, lower leg, toes, arms, forearms and fingers.

Multiple choice biology the age of adolescence changes in body during adolescence hormone during puberty role of hormones in reproduction

Decreased level of estrogen is common cause of 

  1. Myasthenia gravis

  2. Tetany

  3. Osteoporosis

  4. Gout
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation
Osteoporosis is a condition in which bones become weak and brittle due to dissolution of calcium. Due to oestrogen deficiency, osteoclasts i.e. cells that breakdown bones, stay for longer period of time in body and hence cause dissolution of calcium from the bones. Due to this, bones become weak and fragile. After menopause, oestrogen secretion is decreased in females which leads to osteoporosis.
So, the correct answer is 'Osteoporosis'.
Multiple choice evs safety and first aid antibiotics and their uses common health care methods first aid

A fracture in which a small piece of the bone is broken, but remains attached with the ligament is known as

  1. Green stick fracture

  2. Avulsion fracture

  3. Comminuted fracture

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

An avulsion fracture is an injury to the bone in a location where a tendon or ligament attaches to the bone. When an avulsion fracture occurs the tendon or ligament pulls off a piece of the bone and because of that the broken bone remains attached to the ligaments. So, the correct answer is 'Avulsion fracture'.

Multiple choice evs safety and first aid antibiotics and their uses common health care methods first aid

Compound fracture is characterised by

  1. Breaking and cracking of bone at different places.

  2. Breaking bone into more than two fragments.

  3. Appearance of a number of cracks in the same bone.

  4. Protrusion of broken end of bone.
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation
  • A fracture is a medical condition in which there is a partial or complete break in the continuity of the bone.
  • A compound fracture is characterized by breaking and cracking of bone at different places.
  • Food high in calcium, like milk, cheese and yogurt, will strengthen your bones. Strong bones can help prevent compound fractures.
  • So, the correct answer is 'Breaking and cracking of bone at different places'
Multiple choice evs safety and first aid antibiotics and their uses common health care methods first aid

A fracture in which one bone breaks into many parts and some of the pieces protrude out of injured skin is known as

  1. Green stick fracture

  2. Comminuted fracture

  3. Compound fracture

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

An open fracture or compound fracture is a fracture in which there is an open wound or break in the skin near the site of the broken bone. This wound is caused by a fragment of bone breaking through the skin at the time of the injury. So, the correct answer is 'compound fracture'.