Practice Exam 4

Question 0

Supporting cells of the nervous system?

Answer 0

Glial cells

Question 1

What carries information toward the cell body of the neuron?

Answer 1

Dendrite

Question 2

A muscle twitch results from the impulse carried by ? Neuron

Answer 2

Efferent

Question 3

In general, axons with a myelin sheath carry impulses ? than unmyelinated axons

Answer 3

Faster

Question 4

Together, the conduction of an action potential along an axon and the transmission of the impulse at a synapse make up a(n) ? signal

Answer 4

Electrochemical

Question 5

If the inside of the neuron is negatively charged compared to the outside with a value of about -70 mV, then the neuron must be?

Answer 5

Resting

Question 6

What is the sudden and rapid reversal in membrane charge that occurs when a neuron is stimulated?

Answer 6

Action potential and nerve impulse

Question 7

As an action potential travels along an axon, depolarization means that?

Answer 7

Sodium ions are entering the cell quickly

Question 8

Where are synaptic vesicles located?

Answer 8

At the terminals of the axon

Question 9

A Nerotransmitter that binds to a receptor that is a gated potassium channel will cause what change in the postsynaptic neuron?

Answer 9

Hyperpolarization

Question 10

What makes up the central nervous system CNS?

Answer 10

Spinal cord and brain

Question 11

The reaction of the body to deal with an emergency is controlled by the

Answer 11

Symphatic division of the autonomic nervous system

Question 12

White matter consists mostly of

Answer 12

Myelinated axons

Question 13

Cerebrospinal fluid (CSF) functions to ? the brain

Answer 13

Cushion
Nourish
Support

Question 14

The uppermost (most superior) and largest part of the brain is the

Answer 14

Cerebrum

Question 15

The primary motor area of the cerebral cortex is found in the ? lobe

Answer 15

Frontal

Question 16

Which part of the brain do you think is most important to your success in answering this question?

Answer 16

Cerebrum

Question 17

Visual stimuli are interpreted in which lobe of the cerebrum

Answer 17

Occipital

Question 18

A major portion of the primary motor area of the brain is devoted to the

Answer 18

Hand and fingers

Question 19

The thalamus is responsible for which of the following functions

Answer 19

Relay of sensory information to the cerebral cortex

Question 20

What is the primary function of the cerebellum

Answer 20

Balance, posture, and subconscious coordination of movement

Question 21

You just finished running and your heart rate is fast, as is your breathing rate. The part of the brain that directly controls basic body functions such as a heart rate, blood pressure, and breathing is the

Answer 21

Medulla oblongata

Question 22

As Tonya read the obituary of her neighbor, she felt sad. What is considered to be our emotional brain

Answer 22

Limbic system

Question 23

Which of the following senses are most connected to the limbic system

Answer 23

Smell

Question 24

Which of the following is part of the limbic system and is especially important to memory storage and retrieval

Answer 24

Hippocampus

Question 25

What area of the brain filters sensory information and helps to keep us conscious and alert

Answer 25

Reticular activating system RAS

Question 26

The spinal cord is similar to the brain and all of the following ways except one. In which way are they different?

Answer 26

Control conscious thought

Question 27

The primary functions of the spinal cord involve

Answer 27

Reflex actions and communication between the brain and spinal nerves

Question 28

What is the primary advantage of the spinal reflex?

Answer 28

It is very fast

Question 29

In the nervous system, a ganglion (such as a dorsal root ganglion) is a?

Answer 29

Cluster of neurons cell bodies

Question 30

Spinal nerves are able to carry which of the following types of information

Answer 30

Both motor and sensory

Question 31

What senses have receptors distributed widely throughout the body and tend to be a relatively simple in structure

Answer 31

General senses

Question 32

All of the special sense organs are located in the

Answer 32

Head

Question 33

Myrtle disks are examples of receptors that detect ? In the skin

Answer 33

Light touch

Question 34

The photo receptors of the eye are located in the

Answer 34

Retina

Question 35

The point of focus on the retina that has the highest concentration of cones and provides maximum visual acuity and color vision is the

Answer 35

Fovea

Question 36

What part of the ear is the first to vibrate in response to incoming sound waves?

Answer 36

Tympanic membrane (eardrum)

Question 37

To relieve the pressure on the eardrum when scuba diving or flying in an airplane, one must allow air to enter into the

Answer 37

Auditory (Eustachian) tube

Question 38

Hearing and equilibrium are both sensed by

Answer 38

Mechanoreceptors

Question 39

Static equilibrium is dependent upon the

Answer 39

Utricle and saccule

Question 40

The regeneration of neurons is rare in the body. Which type of sensory receptor is a neuron that is actually replaced on a regular basis

Answer 40

Olfactory receptor

Question 41

Olfaction and gustation are both sensed by

Answer 41

Chemoreceptors