Tag: basics of joints

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Multiple choice zoology musculo - skeleton system gait of animals basics of joints joints and type of joints skeleton, joints and muscles

Joints between human skull bones are

  1. Saddle

  2. Gliding

  3. Imperfect

  4. Immovable
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation
A. Saddle joint allows movement on many directions and is present between carpals and metacarpals of the human thumb.
B. Gliding joint allows movement only in one direction and is present between tarsal and carpals.
C. Imperfect joint or Cartilaginous joint are joined together with the help of a disc of cartilage which restricts the movement and shows limited or slight movement and is present between the adjacent vertebrae of the vertebral column and in pubic symphysis.
D. The immovable joint does not allow any movement because the bones are firmly fixed together by strong collagen fibers and are present in the skull bones called as sutures.
So, the correct option is D.
Multiple choice zoology musculo - skeleton system gait of animals basics of joints joints and type of joints skeleton, joints and muscles

A shallow depression in the scapula which receives the head of the upper arm bone is known as the?

  1. Acetabulum

  2. Neural arch

  3. Glenoid cavity

  4. Olecranon fossa
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation
The glenoid cavity of scapula is a part of the shoulder. It is a shallow, pyriform articular surface, which is located on the lateral angle of the scapula.
So correct answer is option C.Glenoid cavity.

Multiple choice zoology musculo - skeleton system gait of animals basics of joints joints and type of joints skeleton, joints and muscles

Synovial fluid is secreted by

  1. Blood

  2. Cartilage

  3. Bone

  4. Synovial membrane
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Membranes are thin pliable layers of epithelial and/or connective tissue. They line body cavities, cover surfaces, connect, or separate regions, structures and organs of the body. 

The three kinds of membranes are mucous, serous and synovial. 
Synovial membrane, unlike to other membranes does not contain epithelium. Therefore, it is not the epithelial membrane. It lines the cavities of the freely movable joints. Like serous membrane, it lines structures, that do not open to the exterior. Synovial membranes secrete the synovial fluid that lubricates articular cartilage at the ends of bones as they move at joints.

Multiple choice zoology musculo - skeleton system gait of animals basics of joints joints and type of joints skeleton, joints and muscles

Sacroiliac joint is

  1. Movable

  2. Immovable

  3. Imperfect

  4. None of the above
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation
The sacroiliac joint connects the sacrum (triangular bone at the bottom of the spine) with the pelvis (iliac bone, that is part of the hip joint) on each side of the lower spine. It transmits all the forces of the upper body to the pelvis and legs. There is not a lot of motion in the joint and it is very strong and stable.
Multiple choice zoology musculo - skeleton system gait of animals basics of joints joints and type of joints skeleton, joints and muscles

In humans, the joint between bones of skull is

  1. Fibrous joint

  2. Hinge joint

  3. Synovial joint

  4. None of the above
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

According to functional classification joints may be immovable (synarthrosis), slightly movable (amphiarthrosis) and freely movable (diarthrosis). 

According to structure joints can be classified into, fibrous, cartilaginous and synovial. 
In fibrous joints, fibrous connective tissue unites articulating bones. No joint cavity is present. They are mostly immovable or slightly movable. 
Sutures (literal meaning to stitch), are immovable joint found between skull bones. 
There are four main sutures in the skull- 
(a) Coronal suture: between the frontal and the two parietal bone. 
(b) Sagittal suture: between the two parietal bones. 
(c) Lambdoidal suture: between parietal and occipital bone. 
(d) Squamosal suture: between parietal bone and temporal bone.

Multiple choice zoology musculo - skeleton system gait of animals basics of joints joints and type of joints skeleton, joints and muscles

Synovial fluid is present in

  1. Spinal canal

  2. Cranial cavity

  3. Freely movable joints

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

The movability of the joints varies depending on different factors. Joints have been classified into three major structural forms, namely, fibrous, cartilaginous and synovial. 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.

Multiple choice zoology musculo - skeleton system gait of animals basics of joints joints and type of joints skeleton, joints and muscles

Which of the following pairs is correctly matched?

  1. Fibrous joint- Between phalanges

  2. Cartilaginous joint- Skull bones

  3. Gliding joint- Between zygapophyses of the successive vertebrae

  4. Hinge joint- Between vertebrae
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Gliding joint is a type of synovial joint, which allows movement of bone about three axes. Gliding joint is essentially flat circular surface and permits movement within narrow limits. Examples of gliding joint are between articular surfaces (zygapophyses) of vertebrae, acromioclavicular joint, some carpals and tarsal bones.

Multiple choice zoology musculo - skeleton system gait of animals basics of joints joints and type of joints skeleton, joints and muscles

Joint between bones of human skull is

  1. Hinge joint

  2. Synovial joint

  3. Cartilaginous joint

  4. Fibrous joint
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

According to the structure, the joints can be classified into- fibrous, cartilaginous and synovial. 

Fibrous connective tissue unites articulating bones without any joint cavity. Fibrous joints are mostly immovable, some slightly movable usually synarthrosis. 
The suture is found only in the skull. It is a fibrous tissue between articulating bones in children but permanently fused in adults. Thus there is some movement in fetuses and young children but immovable in adults.

Multiple choice zoology musculo - skeleton system gait of animals basics of joints joints and type of joints skeleton, joints and muscles

Friction is lessened in ball and socket joint by

  1. Coelomic fluid

  2. Synovial fluid

  3. Pericardial fluid

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

Synovial joints are characterised by the presence of a fluid filled in synovial cavity, between the articulating surfaces of the two bones. Such an arrangement allows considerable movement by reducing friction between bones. These joints help in locomotion and many other movements. Ball and socket joint (between humerus and pectoral girdle), hinge joint (knee joint), pivot joint (between atlas and axis), gliding joint (between the carpals) and saddle joint (between carpal and metacarpal of thumb) are some examples.

Multiple choice zoology musculo - skeleton system gait of animals basics of joints joints and type of joints skeleton, joints and muscles

Sutural joints are present between

  1. Thumb and metatarsal

  2. Humerus and radio-ulna

  3. Parietals of skull

  4. Glenoid cavity and pectoral girdle
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Sutures, meaning to stitch, are immovable joint found between skull bones. 

There are four main sutures in the skull-
a) Coronal suture: between the frontal and the two-parietal bones.
b) Sagittal suture: between the two parietal bones.
c) Lambdoidal suture: between parietal and occipital bone.
d) Squamosal suture: between parietal bone and temporal bone.