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Question 18N.3.HL.TZ0.20b

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Date November 2018 Marks available [Maximum mark: 2] Reference code 18N.3.HL.TZ0.20b
Level HL Paper 3 Time zone TZ0
Command term State Question number b Adapted from N/A
b.
[Maximum mark: 2]
18N.3.HL.TZ0.20b

The diagram shows part of the control of the pituitary gland by the hypothalamus and, at the same time, the control of secretion in the breasts and the ovary by the pituitary gland.

(b)

State two effects of prolactin.

[2]

Markscheme

a. growth and development of the breast/mammary gland ✔

b. lactation/synthesis of milk ✔

c. maintenance of milk secretion ✔

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