adrenal gland

Question 1

situations

Answer 1

when you are afraid, angry, anxious or stressed

Question 2

stimulates the liver to convert glycogen to glucose

Answer 2

more glucose is available for muscle contraction

Question 3

increases blood glucose level e.g. when more glucose is released from the liver into the bloodstream

Answer 3

allows for increased cellular respiration by cells, allowing more energy to be released

Question 4

increases metabolic rate

Answer 4

more energy is released from cellular respiration

Question 5

increases rate of heartbeat

Answer 5

causes a rise in blood pressure, allowing blood to be pumped faster around the body so that oxygen and glucose are transported faster to the muscles

Question 6

increases the rate and depth of ventilation

Answer 6

increases the rate of uptake of oxygen by the lungs, causing an increase in oxygen concentration of blood, allowing more oxygen to be supplied to cells

Question 7

increases the rate of blood clotting e.g. when skin is cut

Answer 7

prevent excessive loss of blood

Question 8

constricts arterioles to the gut

Answer 8

decreases digestive activities
constricts arterioles in skin, causing paleness, thus channeling more blood to the muscles e.g. in the limbs
dilate pupils to enhance vision
contracts hair muscles, producing ‘goosebumps’ and causing hair to stand on ends

Question 9

constricts arterioles in skin

Answer 9

causes paleness, thus channeling more blood to the muscles e.g. in the limbs

Question 10

dilate pupils

Answer 10

enhance vision

Question 11

contracts hair muscles

Answer 11

produce ‘goosebumps’ and causing hair to stand on ends