Neural Control and Coordination Chapter-Wise Test 15

Correct answer Carries: 4.

Wrong Answer Carries: -1.

What is the function of the parasympathetic nervous system?

Prepares the body for stress and emergencies
Regulates voluntary muscle movements
Promotes relaxation and energy conservation
Stimulates the release of adrenaline
3

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

Which of the following statements about the autonomic nervous system is correct?

It controls involuntary functions like heart rate and digestion.
It regulates only voluntary actions.
It consists only of the sympathetic nervous system.
It does not affect the endocrine system.
1

The autonomic nervous system regulates involuntary functions such as heart rate, digestion, and glandular secretions.

Which part of the brain is responsible for balance and coordination?

Cerebrum
Cerebellum
Thalamus
Hypothalamus
2

The cerebellum is responsible for maintaining balance, coordination, and fine motor control.

Which of the following best describes the function of Schwann cells?

They produce neurotransmitters
They generate action potentials
They form the myelin sheath around axons
They transport sodium ions across the membrane
3

Schwann cells form the myelin sheath around axons, aiding in faster nerve impulse conduction.

Which part of the brain regulates body temperature, hunger, and thirst?

Thalamus
Cerebellum
Hypothalamus
Medulla oblongata
3

The hypothalamus plays a key role in regulating body temperature, hunger, thirst, and homeostasis.

Which of the following ions is required for neurotransmitter release at the synapse?

Sodium (Na⁺)
Potassium (K⁺)
Calcium (Ca²⁺)
Chloride (Cl⁻)
3

Calcium ions (Ca²⁺) enter the presynaptic neuron and trigger neurotransmitter release into the synaptic cleft.

Which part of the human nervous system is divided into the sympathetic and parasympathetic divisions?

Central nervous system
Peripheral nervous system
Autonomic nervous system
Somatic nervous system
3

The autonomic nervous system (ANS) is divided into the sympathetic and parasympathetic divisions, regulating involuntary functions.

Which part of the nervous system is responsible for the "fight or flight" response?

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

The sympathetic nervous system prepares the body for emergency responses, increasing heart rate and redirecting energy.

Which ion is mainly responsible for maintaining the resting membrane potential in neurons?

Sodium (Na⁺)
Calcium (Ca²⁺)
Potassium (K⁺)
Chloride (Cl⁻)
3

Potassium ions (K⁺) play a key role in maintaining the resting membrane potential by being more permeable than sodium ions.

Which of the following ions plays a key role in the depolarization phase of an action potential?

Potassium (K⁺)
Calcium (Ca²⁺)
Sodium (Na⁺)
Chloride (Cl⁻)
3

During depolarization, sodium ions (Na⁺) rush into the neuron, changing the membrane potential.

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