Multicellular Organisms - 2.2 Control and communication

Question 1

What does the nervous system consist of ?

Answer 1

Central nervous system (CNS) and other nerves

Question 2

What does the CNS consist of ?

Answer 2

Brain and Spinal Cord

Question 3

What is the function of the Cerebrum ?

Answer 3

Controls Memory, Personality and conscious thoughts

Question 4

What is the function of the Cerebellum ?

Answer 4

Controls Balance and Co-ordination of movement

Question 5

What is the function of the Medulla ?

Answer 5

Controls heart rate and breathing rate

Question 6

What do electrical impulses carry messages along ?

Answer 6

Neurons

Question 7

What do chemical transfer these messages between ?

Answer 7

Neurons, at synapes

Question 8

What can a response to a stimulus be ?

Answer 8

Rapid action from a muscle
or
A slower response from a Gland

Question 9

What are the 3 types of neurons ?

Answer 9

Sensory
Inter
Motor

Question 10

What do receptors detect ?

Answer 10

sensory input / stimuli

Question 11

What does a sensory neuron do ?

Answer 11

pass the information to the CNS

Question 12

Interneurons operate within the ?

Answer 12

CNS
which processes information from the senses that requires a response

Question 13

What do motor neurons enable?

Answer 13

A response to occur at an effector (muscle or gland)

Question 14

What is the function of reflex arc ?

Answer 14

In a reflex arc the messages may be passed directly from a sensory neuron, via an interneuron, to a motor neuron for a very rapid response

Question 15

What protects the body from harm ?

Answer 15

Reflexes

Question 16

What do endocrine gland release into the bloodstream ?

Answer 16

Hormones

Question 17

What are hormones ?

Answer 17

Hormones are chemical messengers