Nervous System In Man - SS3 Biology Past Questions and Answers - page 1
What is the primary function of the central nervous system (CNS) in humans?
Controlling voluntary movements
Regulating body temperature
Processing sensory information and coordinating responses
Which of the following is a component of the peripheral nervous system (PNS)?
Brain
Spinal cord
Nerves outside the brain and spinal cord
Which part of the neuron is responsible for receiving signals from other neurons or sensory receptors?
Axon
Dendrite
Cell body (soma)
What is the role of the spinal cord in the nervous system?
Processing visual information
Transmitting sensory signals to the brain
Regulating emotions and behaviour
Which division of the peripheral nervous system is responsible for the "fight or flight" response during stressful situations?
Somatic nervous system
Autonomic nervous system
Sympathetic nervous system
Which neurotransmitter is commonly associated with pleasure and reward in the brain?
Serotonin
Dopamine
Acetylcholine
Which region of the brain plays a crucial role in memory formation and learning?
Cerebellum
Hypothalamus
Hippocampus
What is the purpose of the myelin sheath surrounding axons in the nervous system?
To accelerate nerve impulses
To regulate hormone production
To facilitate neuron growth
What is the primary difference between voluntary and reflex actions?
Voluntary actions are controlled by the autonomic nervous system, while reflex actions are under conscious control.
Voluntary actions are automatic responses to stimuli, while reflex actions require conscious thought and decision-making.
Voluntary actions involve complex neural pathways and conscious awareness, while reflex actions are rapid and involuntary.
Which part of the nervous system is primarily responsible for coordinating voluntary actions?
Sympathetic Nervous System
Parasympathetic Nervous System
Somatic Nervous System