UNIT TWO: The Brain, Reflex Actions and Hormones

Question 1

What is the function of the Medulla?

Answer 1

Controls breathing and Heart rate.

Question 2

What is the function of the Cerebellum?

Answer 2

Controls co-ordination

Question 3

What is the function of the Cerebrum?

Answer 3

Enables conscious thought and memory.

Question 4

What does the CNS stand for?

Answer 4

Central Nervous System

Question 5

What is the CNS made of?

Answer 5

Brain and the spinal cord

Question 6

What is the perpheral nervous system?

Answer 6

Nerves that come from the spine

Question 7

What is the order for Gathering and Responding to Information?

Answer 7

Stimuli
Senses
Sensory Neuron
CNS
Motor Neuron
Effector
Response

Question 8

Messages travel through the nerve cell in the form of..?

Answer 8

Electrical messages

Question 9

What happens between the nerve cells?

Answer 9

There are small gaps between nerve cells where electricity cannot pass through

Question 10

What is the chemical message called that is sent inbetween nerve cells?

Answer 10

Synapses

Question 11

What is the Stimuli?

Answer 11

Something harmful to the body

Question 12

What is the effector?

Answer 12

The muscle or gland receiving the message.

Question 13

Examples of reflexes?

Answer 13

• Touching something hot then moving away
• Blinking due to dust
• Coughing due to particles blocking the airway

Question 14

What is the order of a reflex arc?

Answer 14

Stimuli
Sense receptor
Sensory neuron
Inter neuron
Motor neuron
Effector
Response

Question 15

Hormones are made of?

Answer 15

Proteins

Question 16

Hormones are made in?

Answer 16

Endocrine Glands

Question 17

What is the job of the reflex arc?

Answer 17

To protect the body from harm by releasing a rapid response.

Question 18

What order are the neurons in a reflex arc?

Answer 18

Sensory
Inter
Motor

Question 19

Hormones are what kind of shape?

Answer 19

Specific

Question 20

Hormones match what?

Answer 20

The receptor

Question 21

What happens when your blood glucose increases?

Answer 21

Pancreas detects change
Pancreas makes insulin
Insulin travels through the blood to the liver
Glucose turns to glycogen
Glycogen makes the blood glucose back to normal

Question 22

What happens when your blood glucose decreases?

Answer 22

Pancreas detects change
Pancreas makes glucagon
Glucagon travels to the liver through the blood
Glucagon signals the liver to break down glycogen to glucose
This increase the amount of glucose in the blood so its back to normal

Question 23

During emergency what is released?

Answer 23

Adrenalin

Question 24

What does Adrenalin promote?

Answer 24

Breakdown of glycogen to glucose