Coordination and control

Question 1

Hormonal systems speed and response

Answer 1

• Slow
• Hormones (chemicals) that travel in the blood

Question 2

Nervous systems speed and response

Answer 2

• Fast
• Electrical impulses along neurons

Question 3

What does effector mean?

Answer 3

Parts of the body, muscles and glands, that produce a response

Question 4

What does receptor mean?

Answer 4

Group of specialised cells which detect stimulus and produce electrical impulses in response. Different receptors are sensitive to different stimuli.

Question 5

Long term effects of diabetes

Answer 5

1. Stroke
2. Kidney failure
3. Eye damage
4. Heart disease

Question 6

Synptoms of diabetes

Answer 6

• High blood glucose levels
• Presence of glucose in the urine
• Being thirsty often
• Lethargic

Question 7

How does insulin work?

Answer 7

Insulin lowers the blood glucose level back to normal by:
• Converting glucose into glycogen in the liver
• Increasing respiration

Question 8

Whats insulin and what produces it?

Answer 8

• The pancreas produces the hormone called insulin.
• Insulin is produced by the pancreas when the blood glucose levels rise above the normal (after eating) and it acts in the liver

Question 9

What are hormones?

Answer 9

• Chemical messengers
• Produced by gland
• That travel in the blood
• To target an organ

Question 10

How does phototropism advantage the plant?

Answer 10

1. Get more growth
2. More light
3. Maximises photosynthesis

Question 11

Where does the shoot tip move to?

Answer 11

Shaded side which causes them to elongate (get longer)

Question 12

Whats phototropism?

Answer 12

A plant growth response which results plant stems growing in the direction of a light source

Question 13

Whats a reflex action?

Answer 13

• Unconscious responses without thinking (brain not involved)
• automatic
• Fast
• Coordinated by spinal cord
(Blinking)

Question 14

Whats a voluntary action?

Answer 14

• Brain is involved in thinking about an action
• Controlled
• Conscious
(Picking up a drink)

Question 15

What is the pathways of neurones in a reflex action?

Answer 15

Reflex arc

Question 16

What are the 3 types of neurones?

Answer 16

1. Sensory neurones
2. Association/ Relay neurones
3. Motor neurones

Question 17

Response to the nervous system

Answer 17

1. Stimulus
2. Receptor
3. Coordinator
4. Effector
5. Response

Question 18

Whats a stimulus?

Answer 18

Anything that we respond to (loud noise, hot plate)

Question 19

What does the nervous system consist in?

Answer 19

Brain and spinal cord which make up the central nervous system (CNS)