Question

The following is the illustration of the sequence of ovarian events (a – i) in a human female.

(i) Identify the figure that illustrates ovulation and mention the stage of oogenesis it represents. 

(ii) Name the ovarian hormone and the pituitary hormone that have caused the abovementioned event. 

(iii) Explain the changes that occur in the uterus simultaneously in anticipation. (iv) Write the difference between ‘c’ and ‘h’. 

(v) Draw a labelled sketch of the structure of a human ovum prior to fertilisation.

Answer 1

i. f; secondary oocyte. 

ii. Estrogen and luteinising hormone (LH) 

iii. Endometrium proliferate (glands become cork-screw shaped) highly vascularised, high regeneration anticipating implantation of the fertilised ovum. 

iv. c—developing follicle; h—regressing corpus luteum. 

v.