GK Questions and Answers On Bones Joints And Muscles

The human body’s internal framework is the human skeleton system. Initially, the human skeleton system contains 270 bones, while grown-up, it was decreased to 206 bones. The skeletal system of human beings is classified into two types; they are the axial skeleton and the appendicular skeleton. The endoskeleton of humans is made up of various types of bones and cartilages. The ground substance of the bones is hard as it is made up of calcium salts.  

There are many interesting facts hidden behind the skeleton system of human beings, bones, joints and muscles of human beings. If you are preparing for the competitive exams or for your board exams it is important for you to know everything about the skeletal system of the human body.  

You may already know many details about the human body. But there may be any possibility for you to leave some part in your preparation. That’s why we have chosen and provided some important skeletal system questions and answers and types of bones quiz with explanations here. Learning through questions and answers with the perfect explanation provided below will help you to avoid any confusion while attending the exams and help you to stronger in GK questions on bones, joints and muscles.  

(Image will be uploaded soon)

The above image shows some of the important bones in the skeleton system of the human body. 

Questions About Skeletal System With Answers

1. Which of the following are in Axial Skeleton? 

A. Skull

B. Vertebral Column

C. Ribs and Sternum

D. All of the above

Ans. (D) All of the above 

Explanation: The skeleton elements are of two types. They are the axial skeleton and the appendicular skeleton. The axial skeleton is present in the longitudinal axis of the human body. It approximately contains 80 bones, which is present in the skull, vertebral column, ribs and sternum. 

2. Which is the longest and heaviest bone of the human body?

A. Femur

B. Fibula

C. Tibia

D. Ilium

Ans. (A) Femur

Explanation: The Femur bone was present in the femur (thigh), tibia, fibula (leg), tarsals (back of the foot), metatarsals (forefoot) and phalanges (toes). This is the heaviest and longest bone present in the human body.  All the femur, tibia and fibula bones are combined together to support the shank of the leg.

3. Which is the only movable bone present in the skull of a human being?

A. Ethmoid bone

B. Mandible bone

C. Nasal bone

D. Lacrimal bone

Ans. (B) Mandible bone

Explanation: The mandible bone is the only moveable bone present in the skull of human beings. Also, it is the largest bone in the skull of the human body. The main role of Mandible bone is to hold the lower teeth and assist in mastication, and forms the lower jawline.

4. Which is the thinnest bone of the human body?

A. Stapes

B. Malleus

C. Incus

D. Fibula

Ans. (D) Fibula

Explanation: The fibula is the thinnest bone in the human body, which is present in the lateral aspect of the leg. But it will not bear the weight of human beings. The main function of the fibula bone-in leg is to act as an attachment for muscles. 

5. Which of the following muscle will act opposite to each other?

A. Cardiac Muscles

B. Skeletal Muscle

C. Antagonists muscle

D. Stapedius muscle

Ans. (C)

Explanation: The biceps and triceps valves are made up of the Antagonists muscles. These pairs of muscles will act in opposition to each other. If one Antagonists muscle produces the movement, then other muscles will relax in vice verse. 

6. Which is the smallest muscle in the human body?

A. Gutters maximus

B. Antagonisits

C. Stapedius

D. None of the above

Ans. (C) Stapedius

Explanation: The length of the Stapedius muscle is in millimetres and looks like cotton thread. This is the smallest muscle in the human body. The Stapedius muscle is present in the inner ear. The function of the stapedius is to stabilise the smallest bone in the body.

7. Which of the following pigments present in the skeletal muscles took responsibility for categorising red and white muscles?

A. Sarcoplasmic

B. Myoglobin

C. Myosin

D. None of the above

Ans. (B) Myoglobin

Explanation: Myoglobin is a small protein substance, which is present in the heart and skeletal muscles. This myoglobin helps to trap oxygen inside the body cell. Based on the presence and absence of myoglobin, the skeleton muscles are categorised as red and white muscles. 

8. Which among the following is also Finger bones?

A. Hamate bone

B. Girdles

C. Phalanges

D. Metacarpal

Ans. (C) Phalanges

Explanation:  Phalanges are the bones that are present in the legs and hands of a human being.  The finger bones are of three types; they are proximal phalanges, intermediate phalanges and distal phalanges.

9. How many Joints are present in the human body?

A. 2

B. 3

C. 4

D. 5

Ans. (B) 3

Explanation: The articulation between two or more bones and the articulation between bone and cartilage is known as joints. In human beings, the joints are of three types. They are fixed or immovable joints, cartilaginous joints or slightly movable joints and synovial or freely movable joints. 

10. Which of the following instruments are used to measure or monitor the electrical activity of the muscle?

A. Electro-Cardiogram (ECG)

B. Electro-Myogram (EMG)

C. Electro-Encephelogram (EEG)

D. Both A and B

Ans. (B) Electro-Myogram (EMG)

Explanation:  

The Electro-Myogram is an instrument mainly used to measure and monitor the muscle response or nerve stimulation of the muscles. Through the electro-myogram, it is possible to identify neuromuscular abnormalities. While using EMG instruments, technicians will insert one or more needles as electrodes in the skin or muscles to monitor its tone. 

11. How many vertebrae are in the grown human body? 

A. 36

B. 33

C. 26

D. 25

Ans: (C) 26

Explanation: The newborn baby will have 33 individual bones (the vertebrae). While growing up, some bones will interact and combine with each other and became flexible. So, the grown human body will have 26 vertebrae. 

12. Name the cartilage that connects the Sternum to the ribs? 

A. Hyaline cartilage

B. White fibrous cartilage

C. Areolar tissue

D. Bony matter

Ans: (A) Hyaline cartilage 

Explanation: Hyaline cartilage is the transparent glassy substance present in between the joints to connect bones. This Hyaline cartilage is present in the respiratory tract and immature skeleton. So, this cartilage acts as a substance connecting the sternum to the ribs. 

13. How many facial bones are present in the human body? 

A. 25

B. 14

C. 15

D. 24

Ans: (B) 14

Explanation: An adult human being will have 14 facial bones, which is consist of six pair bones and two unpaired bones. Lacrimal, maxilla, nasal, palatine, zygomatic, and inferior nasal are the six paired bones and vomer, and mandible bones are the two unpaired facial bones.  

14. What is the name of the joint that is present in the wrist? 

A. Hinge joint

B. Saddle joint

C. Pivot joint

D. Gliding joint

Ans: (D) Gliding joint

Explanation: The gliding joint is a type of synovial joint, which is also known as a plane joint or planar joint. They are present in the knee and elbow joints. The gliding joints allow the necessary extension and flexion.  

15. Which of the following is known as bone formation cells? 

A. Osteocytes

B. Osteoclasts

C. Osteoblasts

D. All the Above

Ans:  (C) Osteoblasts

Explanation: Osteoblasts are the bone lining cells and also called the bone-forming cells. This Osteoblasts are present on the surface of the bone and are obtained from local mesenchymal cells called progenitor cells. 

16. Where do ulna bone present?

A. Head

B. Leg

C. Arms

D. Hip

Ans:  (C) Arms

Explanation:  Ulna bone is the longest bone present in the forearm of the human body. It is located parallel to the radius and acts as a stabilising bone during the movement of bones. 

17. Which of the following bone is called a ball and socket joint in the human body? 

A. Knees

B. Skull

C. Elbow

D. Ankles

Ans: (A) Knees

Explanation: The ball and socket joint is a kind of synovial joint that is present in the knees. This bone has a ball-shaped surface with a cup-like depression. 

18. The bones of cranium jointed by _____

A. Sutures

B. Tendons

C. Cartilages

D. Ligaments

Ans: (A) Sutures

Explanation: The sterilised surgical thread used for the repair of bones and surgery is known as sutures. These bones of the cranium are also joined by the sutures. Nylon, Polypropylene and silk are the three types of sutures. 

The questions about the skeletal system with answers and suitable explanations will help you to have more clarity on these topics. Also, the types of bones quiz may be easy to remember and clarify all your doubts.