Hormones and the endocrine systemIB MYP Biology: Flashcards

What these 14 flashcards ask

What is a hormone?
How are hormones transported?
Which gland releases insulin?
What does insulin do?
Which glands release adrenaline?
What are the effects of adrenaline?
Which gland releases ADH?
What does ADH do?
What urine is made when the blood is too concentrated?
Which organs release oestrogen?
Which organs release testosterone?
Compare the speed of nervous and hormonal control.
Compare how long nervous and hormonal effects last.
Where is the pituitary gland?

Exam questions on Hormones and the endocrine system

Rania is crossing a quiet road in Amman when a car swerves towards her. She jumps back onto the pavement. Her heart is pounding and her breathing is fast, and these effects continue for several minutes after the car has gone.
Explain why Rania's heart is still pounding several minutes after the danger has passed.2 marks
After a large meal of rice and fruit, the blood glucose concentration of a healthy student rises. Within about two hours it has returned to its normal level.
Explain how the body brings the blood glucose concentration back to normal after the meal.2 marks
A scientist records two responses in a volunteer. Response X is pulling a hand away from a hot object: it begins 0.05 seconds after the stimulus and is over in less than a second. Response Y follows a sudden fright: a hormone is released, the first effects appear after about 30 seconds and they last for around 10 minutes.
Identify which response is controlled by the nervous system and which by the hormonal system. Give two reasons.3 marks

Written by the Exaim team, led by Shaun Daswani (Head of Upper Secondary, Improve ME Institute; MSc Financial Mathematics, Imperial College London; BSc, UCL) and Jason Daswani (operational lead, Improve ME Institute; LSE).