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1.You measure skin blood flow in a subject who has been sitting in a room at 38°C for more than an hour. You

inject a site on the arm with a drug that blocks noradrenalin binding to its receptors on vascular smooth muscle. You would observe:

a) A decrease in blood flow at the injected site

b) Nochangeinbloodflowattheinjectedsite

c) Anincreaseinbloodflowattheinjectedsite

d) A decrease in sweat rate at the injected site

e) An increase in sweat rate at the injected site


2.If a resting adult human is exposed to cool conditions that induce a 2x increase in metabolic rate:

a) You could expect their metabolic rate to halve If their insulation was doubled

b) You could expect their metabolic rate to decrease by25% if their insulation was doubled

c) You could expect their metabolic rate to double if their insulation was doubled

d) You could expect their metabolic rate to increase by25% If their insulation was doubled

e) You could expect their metabolic rate to halve if their insulation was halved


3.Which statement about the hormonal control of reproduction is INCORRECT?

a) Positive feedback is an unstable form of control

b) Simple control is where the hormonal signal is limited in amplitude or duration to induce a transient response

c) In the male testicular. steroids have both negative and positive feedback effects on pituitary gonadotrophins

d) Inhibition of prolactin release by. dopamine is an example of inhibitory control

e) Inhibin secreted by the corpus luteum exerts negative feedback on pituitary FSH secretion

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