Nervous system recap

What is the main function of the nervous system?

• To circulate blood throughout the body

• To break down food for energy

• To transmit signals between different parts of the body

• To store nutrients and minerals

What process involves gathering information according to the diagram?

• Integration

• Sensation

• Response

• Reaction

What is the main function of dendrites in a neuron?

• Transmit signals away from the cell body

• Receive signals from other neurons

• Store genetic information

• Protect the neuron from damage

Which part of the neuron contains the nucleus?

• Axon

• Myelin sheath

• Cell body

• Neuromuscular junction

What do dendrites do with the impulses they pick up?

• Store them

• Transmit them to the cell body

• Insulate them

• Direct them away from the cell body

Which two structures make up the central nervous system (CNS)?

• Brain and spinal cord

• Heart and lungs

• Muscles and bones

• Stomach and intestines

Which two systems does the peripheral nervous system (PNS) subdivide into?

• Autonomic and somatic

• Central and peripheral

• Sympathetic and parasympathetic

• Sensory and motor

What connects to the muscle fibres in a motor unit?

• Axon of a sensory neuron

• Axon of a motor neuron

• Blood vessel

• Ligament

What type of neuron carries impulses from the central nervous system to muscles?

• Sensory neuron

• Relay neuron

• Motor neuron

• Interneuron

What is the role of the myelin sheath in a neuron?

• To slow down nerve impulses

• To insulate the axon and speed up nerve impulses

• To store neurotransmitters

• To connect neurons to blood vessels