Choose the correct statements
a)	Synovial joints are freely movable
b)	Ball and socket, and hinge joints are the synovial joints
c)	Synovial joints are characterized by synovial cavity with fluid between the articulating surface of the two bones
d)	All of the above

(d)

Structure of synovial joint is as follows

(i) Synovial Cavity

(a) Contains mucin, a lubricant for joint surfaces

(b) Reduces friction between the joint surface

(c)Allows the movements of nutrients and respiratory gases

(ii) Hyaline Cartilage

(a) Contains no blood vessels or nerves

(b) Reduces the friction between bones during movement

(c)Because of its elastic property, it also acts as shock absorber

(iii) Fibrous Capsule

(a) Formed by the number of ligaments

(b) Arrangement in such a way, as to cope effectively with the particular stresses suffered by the joints

(iv) Synovial membrane

(a) Secretes synovial fluid (a clear sticky fluid) into the synovial cavity

(b) Acts as water proof seal, preventing escape of synovial fluid

(c) Allows movement of nutrients and respiratory gases