Q: Which of the following equations correctly represents the action of the sodium-potassium pump in neurons?

$$2\ \mathrm{K}^+\ \text{in},\ 3\ \mathrm{Na}^+\ \text{out}$$

Question 1

Which of the following best describes the main function of the myelin sheath in a neuron?

Accepted Answer

It increases the speed of nerve impulse transmission along the axon.

Question 2

A patient suffers a traumatic injury that damages the dorsal root of a spinal nerve. Which function is most likely to be impaired?

Accepted Answer

Sensory information transmission to the CNS

Question 3

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

Accepted Answer

Haemoglobin transport

Question 4

Which lobe of the brain is primarily responsible for processing visual information?

Accepted Answer

Occipital lobe

Question 5

A person touches a hot stove and immediately withdraws their hand before feeling pain. Which neural pathway is responsible for this rapid response?

Accepted Answer

Reflex arc

Question 6

Which of the following correctly matches the neurotransmitter with its primary function?

Accepted Answer

Serotonin – Mood regulation

Question 7

Which of the following equations correctly represents the action of the sodium-potassium pump in neurons?

Accepted Answer

$$2\ \mathrm{K}^+\ 	ext{in},\ 3\ \mathrm{Na}^+\ 	ext{out}$$

Question 8

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

Accepted Answer

It connects the two cerebral hemispheres, allowing communication between them.

Question 9

Which of the following is TRUE regarding the meninges?

Accepted Answer

The arachnoid mater is located between the dura mater and pia mater.

Question 10

A patient presents with loss of sensation on the left side of the body after a stroke affecting the right hemisphere of the brain. This is best explained by which principle?

Accepted Answer

Contralateral control

Question 11

Which of the following best describes the difference between white matter and grey matter in the CNS?

Accepted Answer

White matter contains myelinated axons; grey matter contains neuron cell bodies and dendrites.

Question 12

Which of the following is a correct sequence for the transmission of a nerve impulse across a chemical synapse?

Accepted Answer

Action potential arrives at axon terminal → Calcium influx → Vesicle fusion → Neurotransmitter release

Question 13

Which of the following best describes the function of the autonomic nervous system?

Accepted Answer

It regulates involuntary functions such as heart rate, digestion, and respiratory rate.

Question 14

Which of the following is a function of the parietal lobe?

Accepted Answer

Processing sensory information such as touch and pain

Question 15

Which of the following best explains why neurons require a continuous supply of oxygen and glucose?

Accepted Answer

They cannot store energy and rely on aerobic metabolism for ATP production.

Question 16

Which of the following is the correct order of the meninges from outermost to innermost?

Accepted Answer

Dura mater → Arachnoid mater → Pia mater

Question 17

Which of the following best describes the role of sensory (afferent) nerves?

Accepted Answer

They transmit impulses from sensory receptors to the CNS.

Question 18

Which neurotransmitter is most directly associated with the 'fight or flight' response?

Accepted Answer

Adrenaline

Question 19

A patient with damage to Broca's area would most likely experience difficulty with which function?

Accepted Answer

Producing speech

Question 20

Which of the following best describes the function of the subarachnoid space?

Accepted Answer

It contains cerebrospinal fluid that cushions the brain and spinal cord.

Study Notes: The Nervous System (Anatomy & Physiology)

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