Neural Control and Coordination
Test 4

Correct answer Carries: 4.

Wrong Answer Carries: -1.

Which neurotransmitter is released at neuromuscular junctions to stimulate muscle contraction?

Dopamine
Acetylcholine
Serotonin
GABA
2

Acetylcholine is released at neuromuscular junctions to trigger muscle contraction.

Which ion is responsible for depolarization during the generation of an action potential?

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

During depolarization, sodium (Na⁺) ions rush into the neuron, causing a change in membrane potential.

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

Somatic nervous system
Parasympathetic nervous system
Sympathetic nervous system
Enteric nervous system
2

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

Which of the following statements about the sympathetic nervous system is incorrect?

It is part of the autonomic nervous system.
It promotes the "fight or flight" response.
It decreases heart rate and promotes digestion.
It increases blood pressure and respiration rate.
3

The sympathetic nervous system increases heart rate and inhibits digestion as part of the "fight or flight" response.

Which of the following statements about the cerebrum is correct?

It controls voluntary actions and higher cognitive functions.
It is mainly responsible for involuntary reflexes.
It regulates heart rate and breathing.
It is located in the brainstem.
1

The cerebrum is responsible for voluntary actions, reasoning, memory, and higher cognitive functions.

Which of the following statements about synaptic transmission is incorrect?

Neurotransmitters are stored in synaptic vesicles.
Neurotransmitters diffuse across the synaptic cleft.
Neurotransmitters directly enter the postsynaptic neuron.
Neurotransmitters bind to receptors on the postsynaptic membrane.
3

Neurotransmitters do not enter the postsynaptic neuron; they bind to receptors on its membrane to transmit the signal.

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

It is responsible for the "rest and digest" response.
It increases heart rate and blood pressure.
It prepares the body for emergency situations.
It inhibits digestion and saliva secretion.
1

The parasympathetic nervous system promotes relaxation, lowers heart rate, and stimulates digestion.

Which structure in a neuron carries the impulse away from the cell body?

Dendrites
Axon
Synapse
Soma
2

The axon carries nerve impulses away from the neuron's cell body towards other neurons or effector organs.

Which of the following structures is part of the peripheral nervous system (PNS)?

Brain
Spinal cord
Cranial nerves
Cerebellum
3

The peripheral nervous system includes cranial and spinal nerves that connect the CNS to the body.

Which of the following is NOT a function of cerebrospinal fluid (CSF)?

Shock absorption for the brain and spinal cord
Nutrient and waste transport
Generation of nerve impulses
Protection against mechanical injuries
3

Cerebrospinal fluid (CSF) protects the brain and spinal cord from shocks and aids in nutrient transport but does not generate nerve impulses.

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