B11 Hormonal Coordination

Question 1

If a plant is laid on its side in the dark it will still manage to grow upright.

How can it do this when there is no light?

Answer 1

Gravity causes growth hormones called auxins to collect on the lower side of the stem. It grows faster here, so the stem grows upwards.

Question 2

Which organ produces insulin?

Answer 2

Pancreas

Question 3

Apart from injecting insulin, give two other ways in which Type 1 diabetes can be controlled.

Answer 3

Diet and exercise.

Question 4

What are the bottom cavities of a heart called?

Answer 4

Ventricles

Question 5

What are the top cavities of a heart called?

Answer 5

Atria

singular atrium

Question 6

Blood from the rest of the body enters the heart through the…

Answer 6

vena cava.

Question 7

Blood leaves the heart to go round the rest of the body through the…

Answer 7

aorta.

Question 8

Blood from the lungs enters the heart through the…

Answer 8

pulmonary vein.

Question 9

Blood leaves the heart to go to the lungs through the…

Answer 9

pulmonary artery.

Question 10

The “right” side of the heart appears on the right/left side when drawn on paper.

Answer 10

Left

Question 11

The vena carva enters the heart on the right or left side?

Answer 11

Right side

which is drawn on the left on paper

Question 12

The aorta leaves the heart on the top right or top left side?

Answer 12

Top left side

which is drawn on the right on paper

Question 13

The pulmonary vein enters the heart on the right or left side?

Answer 13

Left side

which is drawn on the right side on paper

Question 14

The pulmonary artery leaves the heart on the top right or top left side?

Answer 14

Top right side

which is drawn on the left on paper

Question 15

The aorta is

a) an artery
b) a vein
c) a capillary

Answer 15

a) an artery

Question 16

The vena carva is

a) an artery
b) a vein
c) a capillary

Answer 16

b) a vein

Question 17

What are the coronary arteries?

Answer 17

The arteries which supply the heart muscles themselves with blood and oxygen etc.

Question 18

One treatment for a diseased coronary artery is to place a wire mesh inside.

What is the name and purpose of this treatment?

Answer 18

Stent.

The stent keeps the artery open so more blood can flow through.

Question 19

Give one medical use of thalidomide.

This is not a stupid question - you need to know

Answer 19

Sleeping pill.

Question 20

Before a woman is given thalidomide (sleeping pill) she is checked to see if she is pregnant. Why?

(This is not a stupid question - you need to know)

Answer 20

Thalidomide can cause birth defects.

Thalidomide disaster in 1950s - caused many people to be born with birth defects

Question 21

Before a woman is given thalidomide (sleeping pill) she is told to use two different methods of contraception at the same time. Why?

(This is not a stupid question - you need to know)

Answer 21

To be absolutely certain she does not get pregnant - as the baby could suffer birth defects.

Question 22

Which two hormones does the combined contraceptive pill for women contain?

Answer 22

Oestrogen and progesterone.