In male, LH is called ICSH (Interstitial cells stimulating hormone) which stimulates the leydig cells of the testis to secrete testosterone. In females, LH promotes ovulation and controls the formation of corpus luteum after ovulation.

LH-surge refers to a very high (maximum) level of LH during the middle of menstrual cycle.
It occurs around the 14th day of mentrual cycle,just before ovulation.

(a) Two
(b) Fallopian tube

In the absence of fertilisation, the corpus luteum degenerates.
It causes dis integration of the endometrium of uterus, leading to menstruation

The external thin membranous,perimetrium.
The middle,thick layer of smooth muscles,myometrium.
The inner glandular layer lining the uterine cavity,endometrium.Endometrium undergoes cyclic changes.

(i) Lactiferous cells of alveoli of mammary glands.They are present in breast.
(ii) Lactation
(iii) Colostrum.
(iv) Oxytocin hormone released by posterior lobe of pituitary body.
(v) Mother's milk is low in fat but rich in proteins such as lactalbumin and lactoprotein. Colostrum also contains major immunoglobin IgA. It provides passive immunity to the newborn baby.

(a) The primary oocyte grows in size and completes meosis I,forming a larger haploid cell,the secondary oocyte and a smaller cell,the first polar body.
(b) In the luteal phase,the ruptured graafian follicle transforms into corpus luteum.
Corpus luteum secretes large quantity of progesterone to maintain the endometrium.

Luteinizing hormone influences Leydig cells;they secrete the hormone,testosterone.

Follicle stimulating hormone influences Sertoli cells;they produce certain factors necessary for spermiogenesis.

Reproductive disorders of human female

Structure of spermatozoan
The male sex cells, the spermatozoa of different kinds of animals exhibit a great variety of form.Mostly they show a remarkable uniformity of structure.The main structural subdivisions of a typical mature spermatozoan are Head, Neck, Middle piece and Tail.
Head. Anterior part of head cap, and inside it is located acrosome.At the base of acrosome is present nucleus. The acrosome is derived from compact and dense mass Golgi apparatus which is concerned with the secretion of hyaluronidase enzyme. This enzyme dissolves the egg membrane during fertilisation.The genetic function is embodied in the sperm nucleus which consists almost entirely of DNA plus nuclear proteins.
Neck. It is the part of sperm lying beneath the head and frontal part of middle piece.It is very short in the form of constriction.It is composed of two centrioles, namely proximal centriole and distal centriole.
Middle piece. This part of spermatozoan is almost entirely composed of mitochondria. It supplies the required amount of energy (ATP) to the sperm tail for motility.
Tail.  It is the posterior-most part of sperm mainly composed of axial filament surrounded by cytoplasm and cell membrane.It is meant for providing motility.