Q. Which two bones given figure form a hinge joint?
(a) I and II (b) I and III
(c) I and IV (d) II and III
Q. Which one of the following pairs Of structures is correctly matched with their correct description?
Structures Descriptions
(a) Tibia and fibula - Both form parts of knee joints
(b) Cartilage and cornea - No Blood supply but do require oxygen for respiratory need
(c) Shoulder joint and - Ball and socket type of joint
elbow joint
(d) Premolars and molars - 20 in all and 3 rooted
Dear student,
1)
Hinge joints are formed between two or more bones such as in case of ankle, elbow and knee joints. The movement of these bones to flex or extend will be only along one axis.
Hence the answer is (a) I and II
2)
Answer: Option b. Cornea and cartilage do not have blood supply but they require oxygen for the respiratory need.
Option a is wrong because: Knee joint is formed between 3 bones - the femur, tibia and patella.
Option c is wrong because: Elbow joint is hinge joint.
Option d is wrong because: Premolars and molars do not have 3 roots.
Regards.
1)
Hinge joints are formed between two or more bones such as in case of ankle, elbow and knee joints. The movement of these bones to flex or extend will be only along one axis.
Hence the answer is (a) I and II
2)
Answer: Option b. Cornea and cartilage do not have blood supply but they require oxygen for the respiratory need.
Option a is wrong because: Knee joint is formed between 3 bones - the femur, tibia and patella.
Option c is wrong because: Elbow joint is hinge joint.
Option d is wrong because: Premolars and molars do not have 3 roots.
Regards.