What is the primary function of the nervous system?

• To transport nutrients throughout the body
• To send electrical signals and regulate bodily functions
• To produce hormones
• To digest food

Which part of the nervous system includes the brain and spinal cord?

• Peripheral nervous system
• Central nervous system
• Autonomic nervous system
• Enteric nervous system

What are nerve cells also known as?

• Receptors
• Effectors
• Neurones
• Hormones

What is the role of sensory neurones?

• To carry impulses to muscles
• To detect changes in the environment
• To relay messages within the central nervous system
• To produce hormones

What is a reflex?

• A voluntary action
• An automatic and rapid response to a stimulus
• A slow response to environmental changes
• A conscious thought process

Which component of the nervous system is responsible for rapid, involuntary responses?

• Central nervous system
• Peripheral nervous system
• Reflex arc
• Homeostasis

What is the role of effectors in the nervous system?

• To detect stimuli
• To produce a response
• To transmit electrical impulses
• To coordinate movement

What is the insulating sheath of a neurone called?

• Dendrite
• Axon
• Myelin sheath
• Receptor

How do receptors in the skin function?

• They produce hormones
• They detect pain, temperature, and touch
• They secrete enzymes
• They carry impulses to the brain

What does homeostasis ensure in the body?

• Constant optimal conditions for enzyme activity and cell function
• Rapid growth of cells
• Increased levels of glucose
• Decreased body temperature

The cell body of a neuron contains the nucleus.

Dendrites transmit signals away from the neuron cell body.

Axons are responsible for transmitting signals to other neurons or muscles.

Neurons have a single dendrite and multiple axons.

The myelin sheath increases the speed of electrical impulses along the axon.

Synapses are the gaps between neurons where communication occurs.

The axon terminal is where neurotransmitters are released.

The soma is responsible for generating electrical signals that travel down the axon.

Neurons can only connect with other neurons.

The node of Ranvier is a gap in the myelin sheath of a nerve.