Fill in the blanks:

Hormones	Target gland
(a) Hypothalamic hormone	.................................
(b) Thyrotrophin (TSH)	.................................
(c) Corticotrophin (ACTH)	.................................
(d) Gonadotrophins (LH, FSH)	.................................
(e) Melanotrophin (MSH)	.................................

$\text{Solution}$ 

$\text{ a) Hypothalamic hormone- Pituitary gland}$ 

$\bullet$ Hypothalamic hormones include all the hormones like 

1) thyrotropin-releasing

2) gonadotropin-releasing

3) growth hormone-releasing

4) corticotropin-releasing

5) somatostatin

6) dopamine hormones. 

$\bullet$ Directly these hormones are released into the blood through the capillaries which travel to the pituitary gland  and further processes occur.

$\text{ b) Thyrotrophin(TSH)- Thyroid gland}$

$\bullet$ Thyrotropin(TSH) is produced by the master gland which works on the thyroid gland in stimulating the secretion of thyroxine hormone. 

$\text{ c) Corticotropin(ACTH)- Adrenal gland}$

$\bullet$ ACTH hormone is released by the master gland and stimulates the working of adrenal gland. 

$\text{ d) Gonadotrophins( LH, FSH)- Ovary and testis}$

$\bullet$ In males LH stimulates leydig cells which later release testosterone whereas FSH stimulates sertoli cells which stimulates spermatogenesis.

$\bullet$ In females ovaries are stimulated by both these hormones. 

$\text{ e) Melanotropin (MSH)- Melanocyte cells}$

$\bullet$ MSH directly stimulates the melanocyte cells present in the skin which release melanin which ultimately determines the skin color.