Which of the following glands produces all that lubricates hair follicles?

a. Formation of polar bodies: Formation of polar bodies occurs only in oogenesis, not in spermatogenesis.

b. Meiosis: Correct. Both oogenesis and spermatogenesis involve meiosis, the process of cell division that reduces the chromosome number by half.

c. Development of a Graafian follicle: This is specific to oogenesis. The Graafian follicle is the mature ovarian follicle.

d. Fertilization: Fertilization is the union of sperm and egg, not a process that occurs during the development of either gamete.

a. Sebaceous: Sebaceous glands are located near hair follicles and produce sebum, an oily substance that lubricates the hair and skin, preventing dryness and keeping it supple.

b. Eccrine: Eccrine glands are sweat glands located throughout the skin and help regulate body temperature through sweating.

c. Ceruminous: Ceruminous glands are located in the ear canal and produce cerumen (earwax) which protects the inner ear from dust, debris, and insects.

d. Apocrine: Apocrine glands are sweat glands located in areas like the armpits and groin. They produce a thicker sweat that takes on an odor when broken down by bacteria.