IB SEHS ACTUAL EXAM QUESTIONS AND
CORRECT ANSWERS FULLY SOLVED
EDITION GRADED A+
⩥ The main function of joints is. Answer: to increase mobility of the
body and limbs
⩥ The more movement a joint has.... Answer: the less stable it is and the
greater its risk is for injury (generally speaking)
⩥ Ligaments. Answer: Connect bone to bone and provide stability
⩥ Tendons. Answer: Connect muscle to bone
⩥ Three main types of joints. Answer: fibrous, cartilaginous and
synovial
⩥ Fibrous joints. Answer: Have a thin layer of fibrous tissue connecting
the edges of the two bones; found in the skull; no mobility
⩥ Cartilaginous joints. Answer: The bones can be separated by a
fibrocartilage disc; found between the vertebrae; limited mobility
, ⩥ Synovial joints. Answer: The most commonly occurring joints in the
body; have the greatest mobility
⩥ Types of synovial joints. Answer: gliding, hinge, pivot, condyloid,
saddle, and ball and socket joints
⩥ Gliding joints. Answer: These joints are found between the tarsal
bones and between the carpal bones; have the least amount of movement
⩥ Hinge joints. Answer: These joints are found in the elbow and knee.
The surface of one bone is convex and fits into a reciprocally shaped
concave surface
⩥ Pivot joint. Answer: One bone forms a ring in which the other bone
rolls or pivots allowing rotation of the joint, for example the radius
rotates around the ulna at the radioulnar joint.
⩥ Condyloid joints. Answer: Formed where an oval or egg-shaped
convex surface fits into a reciprocally shaped concave surface. For
example, they are found between the radius and carpal bones of the wrist
and allow movement in two directions
⩥ Saddle joint. Answer: The bones are shaped like a saddle and a rider
sitting in the saddle. An example of a saddle joint is found between the
metacarpal of the thumb and the carpal bone next to it.
CORRECT ANSWERS FULLY SOLVED
EDITION GRADED A+
⩥ The main function of joints is. Answer: to increase mobility of the
body and limbs
⩥ The more movement a joint has.... Answer: the less stable it is and the
greater its risk is for injury (generally speaking)
⩥ Ligaments. Answer: Connect bone to bone and provide stability
⩥ Tendons. Answer: Connect muscle to bone
⩥ Three main types of joints. Answer: fibrous, cartilaginous and
synovial
⩥ Fibrous joints. Answer: Have a thin layer of fibrous tissue connecting
the edges of the two bones; found in the skull; no mobility
⩥ Cartilaginous joints. Answer: The bones can be separated by a
fibrocartilage disc; found between the vertebrae; limited mobility
, ⩥ Synovial joints. Answer: The most commonly occurring joints in the
body; have the greatest mobility
⩥ Types of synovial joints. Answer: gliding, hinge, pivot, condyloid,
saddle, and ball and socket joints
⩥ Gliding joints. Answer: These joints are found between the tarsal
bones and between the carpal bones; have the least amount of movement
⩥ Hinge joints. Answer: These joints are found in the elbow and knee.
The surface of one bone is convex and fits into a reciprocally shaped
concave surface
⩥ Pivot joint. Answer: One bone forms a ring in which the other bone
rolls or pivots allowing rotation of the joint, for example the radius
rotates around the ulna at the radioulnar joint.
⩥ Condyloid joints. Answer: Formed where an oval or egg-shaped
convex surface fits into a reciprocally shaped concave surface. For
example, they are found between the radius and carpal bones of the wrist
and allow movement in two directions
⩥ Saddle joint. Answer: The bones are shaped like a saddle and a rider
sitting in the saddle. An example of a saddle joint is found between the
metacarpal of the thumb and the carpal bone next to it.
