WorksheetsA1 Nervous system organisation
Total questions: 15
Worksheet time: 8mins
What are the two main components of the nervous system?
Central and Autonomic Nervous Systems
Central and Peripheral Nervous Systems
Peripheral and Autonomic Nervous Systems
Somatic and Autonomic Nervous Systems
Which type of cell makes up the myelin sheath in the peripheral nervous system?
Schwann cells
Astrocytes
Oligodendrocytes
Microglia
What is the primary difference between myelinated and unmyelinated neurons?
Myelinated neurons have faster transmission speeds.
Unmyelinated neurons have faster transmission speeds.
Myelinated neurons are found only in the peripheral nervous system.
Unmyelinated neurons are found only in the central nervous system.
What is saltatory conduction?
The continuous conduction of action potentials along an unmyelinated axon.
The jumping of action potentials from one node of Ranvier to the next in a myelinated axon.
The transmission of action potentials across a synapse.
The release of neurotransmitters into the synaptic cleft.
Which neurotransmitter is primarily involved in the transmission at neuromuscular junctions?
Dopamine
Serotonin
Acetylcholine
GABA
What is the role of receptor cells in the nervous system?
To transmit action potentials to muscles.
To detect stimuli and convert them into electrical signals.
To release neurotransmitters into the synaptic cleft.
To form the myelin sheath around neurons.
Which division of the autonomic nervous system is responsible for the 'fight or flight' response?
Central nervous system
Parasympathetic nervous system
Sympathetic nervous system
Somatic nervous system
Which neurotransmitter is commonly associated with the parasympathetic nervous system?
Dopamine
Norepinephrine
Acetylcholine
Serotonin
What is the primary function of intermediate neurons?
To transmit signals from sensory neurons to motor neurons.
To detect external stimuli.
To form the myelin sheath.
To release hormones into the bloodstream.
Which of the following is a characteristic of voluntary reflexes?
They are controlled by the autonomic nervous system.
They involve conscious control and decision-making.
They occur without conscious thought.
They are slower than non-voluntary reflexes.
What is a common symptom of Parkinson’s disease?
Muscle weakness
Tremors
Loss of vision
Hearing loss
Which neurological disorder is characterized by the degeneration of myelin in the central nervous system?
Parkinson’s disease
Alzheimer’s disease
Multiple sclerosis
Epilepsy
What is the role of efferent pathways in the nervous system?
To carry signals from the central nervous system to muscles and glands.
To carry signals from sensory receptors to the central nervous system.
To integrate sensory information.
To form synapses with interneurons.
Which of the following is a function of the sympathetic nervous system?
Decreasing heart rate
Increasing digestive activity
Dilating pupils
Constricting airways
What is the primary role of neurotransmitters in the nervous system?
To form the myelin sheath around neurons.
To transmit signals across synapses.
To detect external stimuli.
To protect neurons from damage.
