1.

Complete the following sentences. (a) In females, the uterine wall thickens to receive the __________. (b) Endocrine glands release hormones directly into___________for transportation to the __________. (c) The sex hormones,_______________________ and estrogen are responsible for the development of __________ characters. (d) Release of sex hormones is under the control of a hormone secreted from the __________.

Answer»

(a) fertilised egg. 

(b) blood stream, target site. 

(c) Testosterone, estrogen, secondary sexual. 

(d) pituitary gland.



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