Question 1

Which of the following is not one of the special senses?

Accepted Answer

A) smell 
B) vision 
C) taste 
D) touch 
E) hearing 
A) smell 
B) vision 
C) taste 
D) touch 
E) hearing D

Question 2

In the cochlea,how is sound transmitted into nerve signals that reach the brain?

Accepted Answer

A) through photoreceptors 
B) through thermoreceptors 
C) through pain receptors 
D) through mechanoreceptors 
E) through chemoreceptors 
A) through photoreceptors 
B) through thermoreceptors 
C) through pain receptors 
D) through mechanoreceptors 
E) through chemoreceptors D

Question 3

Neurotransmitters released from a "sending" cell must travel across a tiny space called a synaptic cleft.

Accepted Answer

A) True 
 B)False  True

Question 4

If you were working with a patient with brain damage who had serious problems with homeostasis,you would suspect that the brain damage included the

Accepted Answer

A) cerebellum. 
B) hypothalamus. 
C) medulla oblongata. 
D) pons. 
E) cerebrum. 
A) cerebellum. 
B) hypothalamus. 
C) medulla oblongata. 
D) pons. 
E) cerebrum.

Question 5

An action potential will occur only if

Accepted Answer

A) sodium ions are released into the interior of the axon. 
B) the interior of the axon becomes less negative than the resting potential. 
C) the threshold potential is reached. 
D) a stimulus triggers a neuron to fire. 
E) All answers are correct. 
A) sodium ions are released into the interior of the axon. 
B) the interior of the axon becomes less negative than the resting potential. 
C) the threshold potential is reached. 
D) a stimulus triggers a neuron to fire. 
E) All answers are correct.

Question 6

The ______ receives the signal that your finger is too hot and sends the message to move the finger away from the stove.The ______ transfers the message to the finger.

Accepted Answer

A) spinal cord;spinal cord 
B) central nervous system;peripheral nervous system 
C) peripheral nervous system;spinal cord 
D) peripheral nervous system;brain 
E) brain;central nervous system 
A) spinal cord;spinal cord 
B) central nervous system;peripheral nervous system 
C) peripheral nervous system;spinal cord 
D) peripheral nervous system;brain 
E) brain;central nervous system

Question 7

The junctions between one neuron and another neuron are called

Accepted Answer

A) axons. 
B) dendrites. 
C) synapses. 
D) cell bodies. 
E) myelin sheaths. 
A) axons. 
B) dendrites. 
C) synapses. 
D) cell bodies. 
E) myelin sheaths.

Question 8

In humans,taste buds are most highly concentrated on the inside surface of the lips of the mouth.

Accepted Answer

A) True 
 B)False

Question 9

The myelin sheath around an axon is continuous.

Accepted Answer

A) True 
 B)False

Question 10

An action potential is generated when free nerve endings detect

Accepted Answer

A) warm bath water. 
B) a cold pool. 
C) a kiss. 
D) All answers are correct. 
E) a tap on the shoulder. 
A) warm bath water. 
B) a cold pool. 
C) a kiss. 
D) All answers are correct. 
E) a tap on the shoulder.

Question 11

In humans,which type of receptor is used primarily to detect light?

Accepted Answer

A) photoreceptor 
B) pain receptor 
C) chemoreceptor 
D) mechanoreceptor 
E) thermoreceptor 
A) photoreceptor 
B) pain receptor 
C) chemoreceptor 
D) mechanoreceptor 
E) thermoreceptor

Question 12

When a snake flicks its tongue the tips of the forked tongue pass through openings in the palate and contact sensory cells in the snout.How would this help a snake detect its prey?

Accepted Answer

A) The snout touches the prey,stimulating mechanoreceptors that let the snake identify the prey. 
B) The snake can taste its prey when it bites it to tell if it is edible. 
C) The motion of the tongue moves air over the snake's snout,helping it to smell. 
D) The tongue touches the prey,stimulating mechanoreceptors that let the snake identify the prey. 
E) Odor molecules from the prey are brought to the snake's receptors. 
A) The snout touches the prey,stimulating mechanoreceptors that let the snake identify the prey. 
B) The snake can taste its prey when it bites it to tell if it is edible. 
C) The motion of the tongue moves air over the snake's snout,helping it to smell. 
D) The tongue touches the prey,stimulating mechanoreceptors that let the snake identify the prey. 
E) Odor molecules from the prey are brought to the snake's receptors.

Question 13

Odorous molecules are first detected in the nose,are transduced,and travel to the olfactory bulb and then to the cerebral cortex.

Accepted Answer

A) True 
 B)False

Question 14

In myelinated axons

Accepted Answer

A) potassium ions can diffuse into the axon only at gaps in the myelin. 
B) sodium ions can diffuse into the axon only at gaps in the myelin. 
C) sodium ions can diffuse out of the axon only at gaps in the myelin. 
D) All answers are correct. 
A) potassium ions can diffuse into the axon only at gaps in the myelin. 
B) sodium ions can diffuse into the axon only at gaps in the myelin. 
C) sodium ions can diffuse out of the axon only at gaps in the myelin. 
D) All answers are correct.

Question 15

A nerve impulse travels about __________ times faster when it leaps between gaps in the myelin sheath than when it travels along an unmyelinated axon.

Accepted Answer

A) 5 
B) 10 
C) 20 
D) 100 
E) 50 
A) 5 
B) 10 
C) 20 
D) 100 
E) 50

Question 16

if you wanted to disrupt transmission of nervous signals,you could use a drug to destroy interneurons.

Accepted Answer

A) True 
 B)False

Question 17

An atom or molecule with an electrical charge is

Accepted Answer

A) an isomer. 
B) an isotope. 
C) an ion. 
D) a neurotransmitter. 
E) an acid. 
A) an isomer. 
B) an isotope. 
C) an ion. 
D) a neurotransmitter. 
E) an acid.

Question 18

If you wanted to study the part of a neuron that carries electrical signals away from the cell body,you would look for what part?

Accepted Answer

A) dendrite 
B) axon 
C) myelin sheath 
D) cell body 
E) hemisphere 
A) dendrite 
B) axon 
C) myelin sheath 
D) cell body 
E) hemisphere

Question 19

The division of the nervous system that integrates sensory information and coordinates the body's response is the

Accepted Answer

A) peripheral nervous system. 
B) central nervous system. 
C) somatic nervous system. 
D) autonomic nervous system. 
E) sympathetic nervous system. 
A) peripheral nervous system. 
B) central nervous system. 
C) somatic nervous system. 
D) autonomic nervous system. 
E) sympathetic nervous system.

Question 20

Which is detected with the general senses?

Accepted Answer

A) kissing someone you care for 
B) shaking hands with an acquaintance 
C) someone pinching your cheeks 
D) All answers are correct. 
E) your finger on a hot stove 
A) kissing someone you care for 
B) shaking hands with an acquaintance 
C) someone pinching your cheeks 
D) All answers are correct. 
E) your finger on a hot stove

Exam 24: The Nervous System and the Senses

Which of the following is not one of the special senses?

In the cochlea,how is sound transmitted into nerve signals that reach the brain?

Neurotransmitters released from a "sending" cell must travel across a tiny space called a synaptic cleft.

If you were working with a patient with brain damage who had serious problems with homeostasis,you would suspect that the brain damage included the

An action potential will occur only if

The ______ receives the signal that your finger is too hot and sends the message to move the finger away from the stove.The ______ transfers the message to the finger.

The junctions between one neuron and another neuron are called

In humans,taste buds are most highly concentrated on the inside surface of the lips of the mouth.

The myelin sheath around an axon is continuous.

An action potential is generated when free nerve endings detect

In humans,which type of receptor is used primarily to detect light?

When a snake flicks its tongue the tips of the forked tongue pass through openings in the palate and contact sensory cells in the snout.How would this help a snake detect its prey?

Odorous molecules are first detected in the nose,are transduced,and travel to the olfactory bulb and then to the cerebral cortex.

In myelinated axons

A nerve impulse travels about __________ times faster when it leaps between gaps in the myelin sheath than when it travels along an unmyelinated axon.

if you wanted to disrupt transmission of nervous signals,you could use a drug to destroy interneurons.

An atom or molecule with an electrical charge is

If you wanted to study the part of a neuron that carries electrical signals away from the cell body,you would look for what part?

The division of the nervous system that integrates sensory information and coordinates the body's response is the

Which is detected with the general senses?

Scientific Study of Life

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Dna Structure and Gene Function

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Evidence of Evolution

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Filters

The receives the signal that your finger is too hot and sends the message to move the finger away from the stove.The transfers the message to the finger.