Question

State the main function of the following.
(i) Cerebrospinal fluid
(ii) Eustachian tube
(ii) Suspensory ligament of the eye
(iv) Sperm duct
(v) Lenticels

Answer 1

(i) Cerebrospinal fluid makes protective cushion around and within CNS.

(ii) Eustachian tube permits the equalization of air pressure between the middle ear and the atmosphere.

(iii) Suspensory ligament holds the lens in position.

(iv) Sperm duct serves to transport sperm from the epididymis to penis for ejaculation.

(v) Lenticels serve in gaseous exchange in older stems.