Unit 2: Theme 1

Question 1

What are receptors?

Answer 1

Groups of cells found in your sense organs that detect the stimulus

Question 2

Most information detected by your body is sent along _______ to the brain.

Answer 2

Neurons

Question 3

The brain sends an impulse to the _________, causing a response

Answer 3

Effectors

Question 4

What does CNS stand for?

Answer 4

Central Nervous System

Question 5

The CNS is made up of:

Answer 5

• The Brain

- Spinal Cord

Question 6

There are three types of neuron:

Answer 6

• Sensory Neurons
• Relay Neurons
• Motor Neurons

Question 7

What are the steps involved in a controlled nervous reaction to a stimulus?

Answer 7

Stimulus –> Receptor Cells –> Sensory Neuron –> Spinal Cord –> Brain –> Spinal Cord –> Motor Neuron –> Effector –> Response

Question 8

What are the steps involved in a reflex action?

Answer 8

Stimulus –> Receptor Cells –> Sensory Neuron –> Spinal Cord –> Motor Neuron –> Effector –> Response

Question 9

What type of waves are sound waves?

Answer 9

Longitudinal Waves

Question 10

The speed at which something vibrates is called its ___________.

Answer 10

Frequency

Question 11

One vibration per second is a frequency of one:

Answer 11

Hertz

Question 12

The human hearing range is between around:

Answer 12

20 Hz to 20000 Hz

Question 13

Noise levels are measured in:

Answer 13

Decibels (dB)

Question 14

What are hormones?

Answer 14

Chemical messengers that travel around your body

Question 15

Hormones help to maintain a constant internal environment called:

Answer 15

Homoeostasis

Question 16

Where are hormones made?

Answer 16

Glands

Question 17

Hormones cause a response in specific cells found in:

Answer 17

Target Organs

Question 18

The hormones insulin and glucagon are responsible for maintaining a:

Answer 18

Constant blood sugar level

Question 19

People who cannot control their blood glucose levels suffer from:

Answer 19

Diabetes

Question 20

Type 1 diabetes sufferers do not produce:

Answer 20

Insulin

Question 21

Type 2 diabetes sufferers do not produce:

Answer 21

Enough insulin meaning they need to exercise or avoid eating large quantities of carbohydrate-rich foods

Question 22

What is the thermoregulatory centre in the brain responsible for?

Answer 22

Maintaining body temperature at 37°