Tag: our skeletal system and the skin

Questions Related to our skeletal system and the skin

Joints of hip and shoulder are

evs bones joints in the human body our skeletal system and the skin joints

  1. Pivot joints

  2. Ellipsoid joints

  3. Hinge joints

  4. Ball and socket joints

Show answer
Correct Option: D
Explanation:
  • Joints are points of contact between bones, or between bones and cartilages.
  • Synovial joints are characterized by the presence of a fluid-filled synovial cavity between the articulating surfaces of the two bones. These joints help in locomotion and many other movements. 
  • Joints of hip and shoulder are ball and socket joints(the head of one bone fits into the socket of another) i.e a type of synovial joints
  • So, the correct answer is 'Ball and socket joint'.

Joint pains in old people are mostly due to

evs bones joints in the human body our skeletal system and the skin joints

  1. Reduced synovial fluid

  2. Overproduction of synovial fluid

  3. Formation of extra osteocytes

  4. All of the above

Show answer
Correct Option: A
Explanation:
  • Joints are points of contact between bones, or between bones and cartilages.
  • Synovial joints are characterized by the presence of a fluid-filled synovial cavity between the articulating surfaces of the two bones. These joints help in locomotion and many other movements. 
  • Joint pains in old people are mostly due to reduced synovial fluid.
  • So, the correct answer is 'Reduced synovial fluid'.

Identify the joint(s) that comes under synovial joints.

evs bones joints in the human body our skeletal system and the skin joints

  1. Ball and socket joint

  2. Pivot joint

  3. Hinge joint

  4. All of the above

Show answer
Correct Option: D
Explanation:
A synovial joint is a connection between two bones which consists of a cartilage lined cavity filled with fluid. There are six types of synovial joints and they are pivot, hinge, saddle, plane, condyloid and ball and socket joints. So, the correct answer is 'All of the above'.

Joint between atlas and odontoid process of axis is

evs bones joints in the human body our skeletal system and the skin joints

  1. Pivot joint

  2. Saddle joint

  3. Angular joint

  4. Hinge joint

Show answer
Correct Option: A
Explanation:
The atlas is the first cervical vertebra which is just under the head. The axis is the second cervical vertebra. It has the odontoid process about which the atlas rotates. The joint between the atlas and axis is a pivot type of joint. The pivot joint is a freely moveable joint that allows only rotary movement around a single axis. It allows the head to turn from side to side. So, the correct answer is 'Pivot joint'.

Fabellae are associated with

evs bones joints in the human body our skeletal system and the skin joints

  1. Elbow joint

  2. Knee joint

  3. Neck joint

  4. Angular joint

Show answer
Correct Option: B
Explanation:
  • The fabella is a small sesamoid bone that is found embedded in the tendon of the lateral head of the gastrocnemius muscle behind the lateral condyle of the femur.
  • The femur meets the large shin bone (the tibia) to form the knee joint. Hence fabellae are associated with the knee joint.
  • So, the correct answer is 'Knee joint'.

Which of the following is correctly matched?

evs bones joints in the human body our skeletal system and the skin joints

  1. Gliding joint- Between zygapophyses of successive vertebrae

  2. Hinge joint- Between vertebrae

  3. Cartilaginous joint- Skull bones

  4. Fibrous joint- Between phalanges

Show answer
Correct Option: A
Explanation:

A gliding joint is a common type of synovial joint formed between bones that meet at flat or nearly flat articular surfaces. Gliding joints occur between the carpal bones, between the tarsal bones and those between the articular processes (zygapophyses) of successive vertebrae. So, the correct answer is 'Gliding joint- Between zygapophyses of successive vertebrae'.

Number of ball and socket joints present in human body is

evs bones joints in the human body our skeletal system and the skin joints

  1. 2 pairs

  2. 4 pairs

  3. 6 pairs

  4. 8 pairs

Show answer
Correct Option: A
Explanation:

The ball and socket joint is a type of synovial joint in which the ball shaped surface of one rounded bone fits into the cup like depression of another bone. There are 2 pairs of ball and socket joints present in human body. One is in the hip, where the round head of the femur rests in the cup like acetabulum of the pelvis and another in the glenohumeral joint of the shoulder, where the rounded head of the humerus rests in the cup like glenoid fossa of the shoulder blade. So, the correct answer is '2 pairs'. 

Which of the following is a ball and socket joint?

evs bones joints in the human body our skeletal system and the skin joints

  1. Knee joint

  2. Elbow joint

  3. Humerus and pectoral girdle

  4. Skull and atlas

Show answer
Correct Option: C
Explanation:

The glenohumeral joint is the articulation between the head of the humerus and the glenoid cavity of the scapula or pectoral girdle. It is a ball and socket type of synovial joint that allows for lateral rotation, flexion and extension of the arm. So, the correct answer is 'Humerus and pectoral girdle'.

Ankle joint is

evs bones joints in the human body our skeletal system and the skin joints

  1. Pivot joint

  2. Ball and socket joint

  3. Hinge joint

  4. Gliding joint

Show answer
Correct Option: C
Explanation:

The ankle joint is the joint between the foot and the leg and it is a type of hinge joint. A hinge joint is a common class of synovial joint that includes the ankle, elbow and knee joints. Hinge joints are formed between two or more bones where the bones can only move along one axis to flex or extend. So, the correct answer is 'hinge joint'.

Which one of the following is not a synovial joint?

evs bones joints in the human body our skeletal system and the skin joints

  1. Ball and socket joint

  2. Pivot joint

  3. Sutures forming the cranium

  4. Hinge joint

Show answer
Correct Option: C
Explanation:
  • Joints are points of contact between bones, or between bones and cartilages.
  • A suture is a type of fibrous joint that is only found in the skull(cranial bones+facial bones). 
  • Sutural joints are present between cranial bones of the skull.
  • Hence sutures forming cranium is not a synovial joint.It is a fibrous joint.
  • So, the correct answer is 'Sutures forming cranium'.