Neural Control And Coordination Chapter-Wise Test 1

Correct answer Carries: 4.

Wrong Answer Carries: -1.

Which of the following statements about synaptic transmission is incorrect?

Neurotransmitters are stored in synaptic vesicles.
Neurotransmitters diffuse across the synaptic cleft.
Neurotransmitters bind to receptors on the presynaptic membrane.
Neurotransmitters facilitate impulse transmission between neurons.
3

Neurotransmitters bind to receptors on the postsynaptic membrane, not the presynaptic membrane.

Which part of the brain is responsible for controlling involuntary functions such as breathing and heartbeat?

Cerebrum
Thalamus
Medulla oblongata
Cerebellum
3

The medulla oblongata controls involuntary functions such as breathing, heart rate, and digestion.

Which type of synapse uses neurotransmitters for impulse transmission?

Electrical synapse
Chemical synapse
Neurogenic synapse
Direct synapse
2

Chemical synapses use neurotransmitters to transmit impulses between neurons.

Which of the following structures protects the brain from mechanical injury?

Pia mater
Dura mater
Arachnoid mater
All of the above
4

The brain is protected by three meninges: pia mater, dura mater, and arachnoid mater.

Which of the following best describes the function of the corpus callosum?

Controls balance and posture
Regulates autonomic functions
Connects the left and right cerebral hemispheres
Relays sensory information to the spinal cord
3

The corpus callosum is a bundle of nerve fibers that connects the two cerebral hemispheres, allowing communication between them.

Which part of the brain is primarily responsible for coordinating voluntary movements?

Medulla oblongata
Cerebellum
Cerebrum
Hypothalamus
2

The cerebellum is responsible for coordinating voluntary movements, balance, and posture.

Which division of the autonomic nervous system is responsible for the "rest and digest" response?

Somatic nervous system
Parasympathetic nervous system
Sympathetic nervous system
Central nervous system
2

The parasympathetic nervous system promotes relaxation, digestion, and energy conservation.

Which of the following statements about neurotransmitters is incorrect?

Neurotransmitters facilitate communication between neurons.
Acetylcholine is involved in muscle contraction.
Neurotransmitters always have an excitatory effect.
Serotonin plays a role in mood regulation.
3

Neurotransmitters can be either excitatory (e.g., glutamate) or inhibitory (e.g., GABA), depending on their function.

Which structure in the brain is responsible for filtering and relaying sensory information to the cerebral cortex?

Cerebellum
Hypothalamus
Thalamus
Medulla oblongata
3

The thalamus acts as a relay station, filtering and directing sensory signals to the appropriate regions of the cerebral cortex.

Which type of neuron is responsible for transmitting impulses from sensory organs to the CNS?

Motor neuron
Afferent neuron
Interneuron
Efferent neuron
2

Afferent neurons (sensory neurons) carry impulses from sensory receptors to the CNS.

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