Role of Joints in Locomotion — NEET Biology
📚 Practice ConceptJoints are essential for all types of movements involving the bony parts of the body. Locomotory movements are no exception to
Which of the above statements accurately describe the structural features and functional implications of different joint types? S1: Fibrous joints are characterised by dense fibrous connective tissue binding the bones, forming immovable connections like the sutures of the cranium. S2: Cartilaginous joints, such as those between adjacent vertebrae, facilitate limited movements due to the bones being joined together by cartilages. S3: Synovial joints are distinctive for their fluid-filled synovial cavity between articulating surfaces, which allows considerable movement and assists in locomotion. S4: The synovial fluid within synovial joints, along with the articular cartilage covering bone ends, primarily serves to reduce friction and absorb shock, thereby ensuring smooth joint function. S5: All locomotory movements depend on the coordinated activity of muscular, skeletal, and neural systems, where joints act as fulcra to convert muscle-generated force into movement.
View solution & NCERT explanation
Correct answer: C — S1, S2, S3, S4 and S5
The anchor concept is the structural basis for the mobility/immobility of different joint types and their role in movement. S1: This statement is correct. The NCERT says, 'Fibrous joints do not allow any movement. This type of joint is shown by the flat skull bones which fuse end-to-end with the help of dense fibrous connective tissues in the form of sutures, to form the cranium.' S2: This statement is correct. The NCERT states, 'In cartilaginous joints, the bones involved are joined together with the help of cartilages. The joint between the adjacent vertebrae in the vertebral column is of this pattern and it permits limited movements.' S3: This statement is correct. The NCERT explains, '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.' S4: This statement is correct. While NCERT explicitly mentions 'fluid filled synovial cavity' and 'articulating surfaces', the role of 'articular cartilage' covering bone ends and its combined function with synovial fluid to 'reduce friction and absorb shock' is a standard biological understanding derived from the context of synovial joints enabling smooth movement. The NCERT quote doesn't explicitly name 'articular cartilage' but refers to the 'articulating surfaces' which are covered by it. This is a reasonable inference. Let's make sure it's strictly within NCERT's scope. The NCERT describes joints allowing considerable movement. Reducing friction and absorbing shock is the basic mechanism for this. Hence, it is accurate within the context. S5: This statement is correct. The NCERT mentions 'Locomotion requires a perfect coordinated activity of muscular, skeletal and neural systems.' and 'Force generated by the muscles is used to carry out movement through joints, where the joint acts as a fulcrum.' All statements S1, S2, S3, S4 and S5 are correct. The final answer is C. The concept tested is a comprehensive understanding of the structure, function, and roles of fibrous, cartilaginous, and synovial joints in the overall locomotion and movement system, including the coordinated activity of different body systems, as detailed in NCERT.
What does NCERT say about Joints are essential for?
Has this concept appeared in NEET?
Which chapter is this from?
Through deep analysis of NEET and NTA, 176 of the 180 ReNEET 2026 (June 21) questions were already in the MedicNEET question bank before the exam.
176/180MedicNEET's Biology question bank is built from the same NCERT lines NTA picks repeatedly. Not random MCQs — questions crafted exactly like NTA crafts them.