Tag: joints

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

Interphalangeal joints are?

  1. Fixed joints

  2. Hinge joints

  3. Movable joints

  4. Straight joints
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation
B.The interphalangeal joints-of the hand are the hinge joints between the phalanges of the fingers that provide flexion towards the palm of the hand.
So correct answer is option B.Hinge joints
Multiple choice evs bones joints in the human body our skeletal system and the skin joints

Saddle joint is present in

  1. Human

  2. Rabbit

  3. Both of the above

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

Saddle joint is a type of synovial joint in humans in which opposing articular surfaces with both concave and convex surfaces fit into one another. Example of saddle joint is carpometacarpal joint of thumb.

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

Hinge joint is present between

  1. Femur and ulna

  2. Humerus and ulna

  3. Femur and pectoral girdle

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

Synovial joints are characterised by the presence of a fluid-filled synovial cavity between the articulating surfaces of the two bones. Such an arrangement allows considerable movement. These joints help in locomotion and many other movements. Common examples of synovial joints are ball and socket joint (between the humerus and pectoral girdle) and hinge joint (knee and elbow joints).

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

Fabellae bones are associated with

  1. Elbow joint

  2. Knee joint

  3. Neck joint

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

The fabella is a fibrocartilaginous or ossified sesamoid bone of the knee, classically located within the tendon of the lateral head of the gastrocnemius muscle, behind the lateral condyle of the femur.

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

Joint between atlas and axis is

  1. Pivot joint

  2. Saddle Joint

  3. Angular joint

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

Joint between atlas and axis vertebrae is an example of pivot joint. It is a type of synovial joint. This joint is characterised with central bony pivot surrounded by collar of bone and ligament. This type of joint permits supination, rotation and pronation types of movements. Examples are proximal radioulnar joint and atlanto-axial joints.

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

Pivot joint occurs at

  1. The hip and shoulder joint

  2. Between the atlas and the odontoid process of axis

  3. Sternoclavicular joint

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

According to functional classification, joints may be immovable (synarthroses), slightly movable (amphiarthroses) and freely movable (diarthrosis). According to structure, joints can be classified into fibrous, cartilaginous and synovial.
The pivot joint is a synovial joint, which permits the movement of bone about one axis of rotation. In pivot, the joint central bony pivot of one bone is surrounded by a collar of bone and ligaments. The types of movement possible are rotation, pronation, supination. An example of pivot joints is proximal radioulnar and atlantoaxial joints.

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

Which one is a ball and socket joint?

  1. Knee joint

  2. Elbow joint

  3. Humerus and pectoral girdle

  4. Skull and atlas
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Ball and socket is a type of synovial joint in which globe-like the head of one bone fits into the cup-like concavity of another bone. It permits flexion, extension, internal rotation, lateral rotation, abduction, adduction and circumduction type of movements. 

Examples of ball and socket joints are shoulder and hip joint. In shoulders, each half of pectoral girdle consists of a clavicle and a scapula. The scapula is a large triangular flat bone situated in the dorsal part of the thorax between the second and the seventh ribs. The dorsal, flat, a triangular body of scapula has a slightly elevated ridge, called as the spine which projects as a flat, expanded process called the acromion. The clavicle articulates with this. Below the acromion is a depression called as the glenoid cavity, which articulates with the head of the humerus to form the shoulder joint.

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

Head of humerus is articulated with pectoral girdle by a joint, called as

  1. Hinge

  2. Ball and socket

  3. Immovable

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

Head of the humerus is articulated with the cup-shaped socket of pectoral girdle by a joint, called as ball and socket joint. It is movable in all planes and also exhibits rotation. Pivot joint exhibits rotation only while hinge joint shows up and down motion in one plane only. The correct answer is B.

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

The joint of radio-ulna with upper arm is

  1. Hinge joint

  2. Gliding joint

  3. Socket joint

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

The hinge joint is a synovial joint, which permits uni-axial movement of bone about one axis of rotation. In a hinge joint, the convex surface of one bone fits into the concave surface of another. The movements possible are flexion and extension. Examples of hinge joints are elbow (radio-ulna with upper arm), interphalangeal joint, knee and ankle joints.

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

Which of the following movements in man are directly concerned with locomotion ?

  1. Bending of arm at elbow

  2. Rotation of head of femur in acetabulum

  3. Peristaltic movements

  4. Contraction of the heart
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Locomotion is the movement of organisms from one place to another. The femur and the acetabulum form the hip joint. Hence, the rotation of head of femur in acetabulum will lead to the movement of the legs and thereby, be help in locomotion. Bending of arm at elbow will only cause movement of hands and hence no locomotion. Peristalsis is the movement of the oesophagus as food pases through it and so, it can also not be considered as locomotion. Contraction of the heart will only cause pumping of blood and will not be responsible for actual locomotion.