Complete the description of the endocrine system by choosing words from the list. Each word or phrase may be used once, more than once or not at all.
adrenal glands, blood, chemical, decreases, electrical, increases, narrows, nerves, oestrogen, ovaries, testes, testosterone, widens
(a)[6]
Hormones are [BLANK] substances made by glands and transported in the [BLANK]. A hormone changes the activity of a target organ. One example is adrenaline, which is made in the [BLANK]. Adrenaline [BLANK] the breathing rate, [BLANK] the pulse rate and [BLANK] the pupils.
(b(i))[1]
State the letter in Fig. 9.1 that shows the organ which makes insulin.
(b(ii))[1]
State the function of insulin.
(b(iii))[1]
State the letter in Fig. 9.1 that shows the organ that makes urea.
Worked solution & mark scheme
This 9-mark question has a full step-by-step worked solution and mark scheme. One marking point: “Chemical substance” …