Nervous Controls

Question 1

Describe the components of the nervous system including the CNS

Answer 1

The nervous system is made up of the central nervous system (CNS) and other nerves. It is responsible for sending, receiving and interpreting information from all parts of the body.

The CNS consists of the spinal cord and the brain and is connected to the rest of the body by other neurons

Question 2

What is the function of the cerebrum?

Answer 2

Controls conscious thoughts and actions, memory and personality

Question 3

What is the function of the cerebellum?

Answer 3

Controls muscle coordination and balance

Question 4

What is the function of the medulla?

Answer 4

Controls breathing and heart rate

Question 5

What is the function of the CNS?

Answer 5

The CNS receives messages from all over the body then sorts out the information and sends electrical impulses to muscle glands which make an appropriate response

Question 6

What are reflexes?

Answer 6

Reflexes are rapid responses to environmental changes that protect the body from harm

Question 7

What is the function of a sensory neurone?

Answer 7

Pass information from the senses to the CNS

Question 8

What is the function of the inter neurone?

Answer 8

Located in the CNS and processes information from the senses that require a response

Question 9

What is the function of the motor neurone?

Answer 9

Enables a response to occurs at an effector (a muscle or gland)

Question 10

What are the 3 types of neurones

Answer 10

Sensory, inter and motor nuerones

Question 11

What is an electrical impulse?

Answer 11

Electrical impulses move along specific nuerones to pass messages to the CNS from all over the body

Question 12

What is a synapse?

Answer 12

A synapse is the place where two neurones meet

Question 13

What is the function of a synapse?

Answer 13

When a nerves electrical impulse arrives at the end of one neuron it causes the release of chemicals. The chemicals diffuse across the synapse and bind with the receptors on the next neuron triggering another impulse.

Chemicals transfer messages between neurons at synapses

Question 14

Describe the pathway of a nerve impulse through the reflex arc

Answer 14

Stimulus detected by sensory receptor
Sensory receptor passes information to the sensory neurone
Sensory neurone passes impulse/information to the inter neurone
Inter neurone passes impulse to motor neurone
Impulse passes along motor neurone to effector
Muscle contracts