Q: If the brain contains billions of neurons and the spinal cord contains millions, which of the following equations correctly expresses this relationship?

$\text{Brain neurons} > \text{Spinal cord neurons}$

Question 1

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

Accepted Answer

Controlling perception, voluntary movement, consciousness, and homeostasis

Question 2

The central nervous system (CNS) is composed of which structures?

Accepted Answer

Brain and spinal cord

Question 3

A patient suffers damage to the spinal cord at the level of the first lumbar vertebra. Which division of the nervous system is directly affected?

Accepted Answer

Central nervous system (CNS)

Question 4

Which of the following is TRUE regarding the anatomical divisions of the nervous system?

Accepted Answer

The CNS is protected by the skull and vertebral column

Question 5

Nerves in the peripheral nervous system (PNS) are composed of:

Accepted Answer

Axons bundled with blood vessels and connective tissue

Question 6

How many pairs of cranial nerves are found in the human body?

Accepted Answer

12

Question 7

Which of the following best explains the difference between the CNS and PNS?

Accepted Answer

The CNS includes the brain and spinal cord, while the PNS includes all nerves outside the skull and vertebral column.

Question 8

If a person loses the ability to regulate their sleep/wake cycle, which system is most likely affected?

Accepted Answer

Nervous system and endocrine system

Question 9

Which of the following is a function of the nervous system that is shared with the endocrine system?

Accepted Answer

Regulation of blood pH

Question 10

A nerve is best defined as:

Accepted Answer

A bundle of axons, blood vessels, and connective tissue

Question 11

Which of the following equations best represents the relationship between the number of cranial nerves (CN) and spinal nerves (SN) in the human body?

Accepted Answer

$CN + SN = 43$

Question 12

Which division of the nervous system enables the brain to communicate with most of the body below the head and neck?

Accepted Answer

Spinal cord (part of CNS)

Question 13

A patient presents with loss of voluntary movement. Which part of the nervous system is most likely impaired?

Accepted Answer

Somatic motor division

Question 14

Which of the following is NOT a function regulated by the nervous system?

Accepted Answer

Production of insulin

Question 15

If the brain contains billions of neurons and the spinal cord contains millions, which of the following equations correctly expresses this relationship?

Accepted Answer

$	ext{Brain neurons} > 	ext{Spinal cord neurons}$

Question 16

Which of the following best describes the role of the spinal cord?

Accepted Answer

It enables communication between the brain and most of the body below the head and neck.

Question 17

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

Accepted Answer

The nervous system is the seat of consciousness, personality, learning, and memory.

Question 18

Which of the following is a correct pairing of nervous system division and its components?

Accepted Answer

PNS: nerves outside the skull and vertebral column

Question 19

Which of the following is a function of the nervous system that is NOT shared with the endocrine system?

Accepted Answer

Regulation of respiratory rate

Question 20

Which of the following best describes the relationship between the CNS and PNS?

Accepted Answer

The CNS is responsible for integrating information, while the PNS transmits signals to and from the CNS.

Introduction to the Nervous System and Nervous Tissue: Overview and Anatomical Divisions

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